./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.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-scaling/egcd-ll_valuebound10.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 519a8ae0e90f59a92a96e1769439084ba865f68b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 05:51:47,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 05:51:47,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 05:51:47,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 05:51:47,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 05:51:47,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 05:51:47,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 05:51:47,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 05:51:47,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 05:51:47,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 05:51:47,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 05:51:47,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 05:51:47,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 05:51:47,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 05:51:47,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 05:51:47,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 05:51:47,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 05:51:47,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 05:51:47,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 05:51:47,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 05:51:47,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 05:51:47,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 05:51:47,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 05:51:47,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 05:51:47,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 05:51:47,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 05:51:47,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 05:51:47,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 05:51:47,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 05:51:47,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 05:51:47,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 05:51:47,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 05:51:47,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 05:51:47,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 05:51:47,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 05:51:47,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 05:51:47,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 05:51:47,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 05:51:47,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 05:51:47,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 05:51:47,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 05:51:47,170 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 05:51:47,209 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 05:51:47,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 05:51:47,211 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 05:51:47,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 05:51:47,213 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 05:51:47,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 05:51:47,214 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 05:51:47,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 05:51:47,215 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 05:51:47,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 05:51:47,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 05:51:47,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 05:51:47,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 05:51:47,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 05:51:47,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 05:51:47,217 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 05:51:47,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 05:51:47,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 05:51:47,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 05:51:47,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 05:51:47,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 05:51:47,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 05:51:47,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:51:47,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 05:51:47,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 05:51:47,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 05:51:47,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 05:51:47,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 05:51:47,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 05:51:47,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 05:51:47,230 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 519a8ae0e90f59a92a96e1769439084ba865f68b [2021-08-26 05:51:47,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 05:51:47,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 05:51:47,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 05:51:47,596 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 05:51:47,597 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 05:51:47,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c [2021-08-26 05:51:47,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9bb44c42/04e88e4e355245a1974dfbd48efeed24/FLAG61eb672b8 [2021-08-26 05:51:48,084 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 05:51:48,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c [2021-08-26 05:51:48,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9bb44c42/04e88e4e355245a1974dfbd48efeed24/FLAG61eb672b8 [2021-08-26 05:51:48,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9bb44c42/04e88e4e355245a1974dfbd48efeed24 [2021-08-26 05:51:48,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 05:51:48,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 05:51:48,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 05:51:48,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 05:51:48,526 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 05:51:48,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:51:48" (1/1) ... [2021-08-26 05:51:48,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@168f0673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:48, skipping insertion in model container [2021-08-26 05:51:48,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:51:48" (1/1) ... [2021-08-26 05:51:48,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 05:51:48,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 05:51:48,661 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-scaling/egcd-ll_valuebound10.c[489,502] [2021-08-26 05:51:48,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:51:48,698 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 05:51:48,712 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-scaling/egcd-ll_valuebound10.c[489,502] [2021-08-26 05:51:48,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:51:48,775 INFO L208 MainTranslator]: Completed translation [2021-08-26 05:51:48,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:48 WrapperNode [2021-08-26 05:51:48,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 05:51:48,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 05:51:48,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 05:51:48,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 05:51:48,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:48" (1/1) ... [2021-08-26 05:51:48,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:48" (1/1) ... [2021-08-26 05:51:48,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 05:51:48,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 05:51:48,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 05:51:48,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 05:51:48,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:48" (1/1) ... [2021-08-26 05:51:48,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:48" (1/1) ... [2021-08-26 05:51:48,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:48" (1/1) ... [2021-08-26 05:51:48,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:48" (1/1) ... [2021-08-26 05:51:48,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:48" (1/1) ... [2021-08-26 05:51:48,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:48" (1/1) ... [2021-08-26 05:51:48,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:48" (1/1) ... [2021-08-26 05:51:48,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 05:51:48,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 05:51:48,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 05:51:48,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 05:51:48,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:48" (1/1) ... [2021-08-26 05:51:48,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:51:48,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:48,930 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 05:51:48,961 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 05:51:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 05:51:48,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 05:51:48,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 05:51:48,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 05:51:49,403 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 05:51:49,403 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-08-26 05:51:49,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:51:49 BoogieIcfgContainer [2021-08-26 05:51:49,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 05:51:49,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 05:51:49,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 05:51:49,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 05:51:49,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 05:51:48" (1/3) ... [2021-08-26 05:51:49,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4d5f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:51:49, skipping insertion in model container [2021-08-26 05:51:49,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:48" (2/3) ... [2021-08-26 05:51:49,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4d5f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:51:49, skipping insertion in model container [2021-08-26 05:51:49,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:51:49" (3/3) ... [2021-08-26 05:51:49,418 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound10.c [2021-08-26 05:51:49,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 05:51:49,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-26 05:51:49,472 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 05:51:49,481 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 05:51:49,482 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-26 05:51:49,498 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 43 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:51:49,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 05:51:49,503 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:49,504 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:49,505 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:49,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:49,510 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-08-26 05:51:49,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:49,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666673065] [2021-08-26 05:51:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:49,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:49,699 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 05:51:49,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:49,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666673065] [2021-08-26 05:51:49,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666673065] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:49,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:49,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 05:51:49,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018105813] [2021-08-26 05:51:49,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 05:51:49,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:49,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 05:51:49,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:51:49,734 INFO L87 Difference]: Start difference. First operand has 44 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 43 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 05:51:49,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:49,760 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2021-08-26 05:51:49,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 05:51:49,762 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 05:51:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:49,770 INFO L225 Difference]: With dead ends: 85 [2021-08-26 05:51:49,771 INFO L226 Difference]: Without dead ends: 40 [2021-08-26 05:51:49,773 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 05:51:49,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-26 05:51:49,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-08-26 05:51:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 39 states have internal predecessors, (41), 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 05:51:49,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-08-26 05:51:49,799 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2021-08-26 05:51:49,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:49,800 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-08-26 05:51:49,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 05:51:49,800 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-08-26 05:51:49,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 05:51:49,801 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:49,801 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:49,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 05:51:49,801 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:49,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:49,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-08-26 05:51:49,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:49,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125411225] [2021-08-26 05:51:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:49,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:49,829 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:49,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84315918] [2021-08-26 05:51:49,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:49,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:49,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:49,832 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 05:51:49,899 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 05:51:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:49,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 05:51:49,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:50,185 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 05:51:50,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:50,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125411225] [2021-08-26 05:51:50,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:50,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84315918] [2021-08-26 05:51:50,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84315918] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:50,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:50,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:51:50,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530303852] [2021-08-26 05:51:50,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:51:50,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:50,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:51:50,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:51:50,199 INFO L87 Difference]: Start difference. First operand 40 states and 41 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 05:51:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:50,350 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-08-26 05:51:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:51:50,351 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 05:51:50,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:50,354 INFO L225 Difference]: With dead ends: 70 [2021-08-26 05:51:50,355 INFO L226 Difference]: Without dead ends: 66 [2021-08-26 05:51:50,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:51:50,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-26 05:51:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2021-08-26 05:51:50,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.297872340425532) internal successors, (61), 53 states have internal predecessors, (61), 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 05:51:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2021-08-26 05:51:50,374 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 13 [2021-08-26 05:51:50,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:50,374 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2021-08-26 05:51:50,375 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 05:51:50,375 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2021-08-26 05:51:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 05:51:50,376 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:50,376 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:50,405 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 05:51:50,590 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 05:51:50,591 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:50,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:50,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2021-08-26 05:51:50,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:50,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36540551] [2021-08-26 05:51:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:50,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:50,611 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:50,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360123145] [2021-08-26 05:51:50,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:50,622 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:50,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:50,623 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 05:51:50,624 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 05:51:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:50,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 05:51:50,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:51,194 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 05:51:51,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:51,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36540551] [2021-08-26 05:51:51,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:51,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360123145] [2021-08-26 05:51:51,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360123145] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:51,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:51,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-26 05:51:51,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068356656] [2021-08-26 05:51:51,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:51:51,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:51,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:51:51,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:51:51,198 INFO L87 Difference]: Start difference. First operand 54 states and 61 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 05:51:51,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:51,541 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-08-26 05:51:51,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 05:51:51,542 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 05:51:51,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:51,543 INFO L225 Difference]: With dead ends: 66 [2021-08-26 05:51:51,543 INFO L226 Difference]: Without dead ends: 64 [2021-08-26 05:51:51,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 323.4ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:51:51,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-26 05:51:51,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2021-08-26 05:51:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 53 states have internal predecessors, (60), 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 05:51:51,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2021-08-26 05:51:51,549 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 15 [2021-08-26 05:51:51,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:51,550 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2021-08-26 05:51:51,550 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 05:51:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2021-08-26 05:51:51,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 05:51:51,551 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:51,551 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 05:51:51,579 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 05:51:51,769 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 05:51:51,769 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:51,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:51,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2021-08-26 05:51:51,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:51,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476385283] [2021-08-26 05:51:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:51,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:51,785 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:51,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626837988] [2021-08-26 05:51:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:51,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:51,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:51,799 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 05:51:51,810 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 05:51:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:51,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 05:51:51,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:52,189 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 05:51:52,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:52,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476385283] [2021-08-26 05:51:52,190 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:52,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626837988] [2021-08-26 05:51:52,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626837988] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:52,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:52,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-26 05:51:52,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261790905] [2021-08-26 05:51:52,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:51:52,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:52,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:51:52,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:51:52,192 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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 05:51:52,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:52,358 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-08-26 05:51:52,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 05:51:52,359 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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 05:51:52,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:52,360 INFO L225 Difference]: With dead ends: 100 [2021-08-26 05:51:52,360 INFO L226 Difference]: Without dead ends: 92 [2021-08-26 05:51:52,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 134.1ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:51:52,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-26 05:51:52,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2021-08-26 05:51:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 79 states have internal predecessors, (95), 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 05:51:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2021-08-26 05:51:52,368 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 17 [2021-08-26 05:51:52,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:52,368 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2021-08-26 05:51:52,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 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 05:51:52,368 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2021-08-26 05:51:52,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 05:51:52,369 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:52,369 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:52,399 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 05:51:52,593 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 05:51:52,593 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:52,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:52,594 INFO L82 PathProgramCache]: Analyzing trace with hash 850548497, now seen corresponding path program 1 times [2021-08-26 05:51:52,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:52,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263470993] [2021-08-26 05:51:52,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:52,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:52,610 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:52,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792692077] [2021-08-26 05:51:52,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:52,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:52,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:52,612 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 05:51:52,613 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 05:51:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:52,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 05:51:52,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:52,779 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 05:51:52,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:52,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263470993] [2021-08-26 05:51:52,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:52,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792692077] [2021-08-26 05:51:52,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792692077] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:52,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:52,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:51:52,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562375555] [2021-08-26 05:51:52,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:51:52,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:52,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:51:52,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:51:52,782 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 05:51:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:52,842 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2021-08-26 05:51:52,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:51:52,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 05:51:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:52,853 INFO L225 Difference]: With dead ends: 80 [2021-08-26 05:51:52,853 INFO L226 Difference]: Without dead ends: 78 [2021-08-26 05:51:52,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:51:52,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-26 05:51:52,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-08-26 05:51:52,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 72 states have (on average 1.25) internal successors, (90), 77 states have internal predecessors, (90), 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 05:51:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2021-08-26 05:51:52,867 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 20 [2021-08-26 05:51:52,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:52,868 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2021-08-26 05:51:52,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 05:51:52,868 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2021-08-26 05:51:52,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 05:51:52,869 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:52,869 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:52,892 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 05:51:53,081 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 05:51:53,081 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:53,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:53,082 INFO L82 PathProgramCache]: Analyzing trace with hash 598788611, now seen corresponding path program 1 times [2021-08-26 05:51:53,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:53,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302225899] [2021-08-26 05:51:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:53,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:53,107 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:53,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291210406] [2021-08-26 05:51:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:53,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:53,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:53,110 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 05:51:53,133 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 05:51:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:53,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-26 05:51:53,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-26 05:51:53,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:53,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302225899] [2021-08-26 05:51:53,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:53,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291210406] [2021-08-26 05:51:53,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291210406] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:51:53,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:51:53,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-08-26 05:51:53,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737545633] [2021-08-26 05:51:53,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:51:53,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:53,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:51:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:51:53,407 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 05:51:53,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:53,467 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-08-26 05:51:53,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:51:53,468 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2021-08-26 05:51:53,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:53,468 INFO L225 Difference]: With dead ends: 86 [2021-08-26 05:51:53,468 INFO L226 Difference]: Without dead ends: 80 [2021-08-26 05:51:53,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:51:53,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-26 05:51:53,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2021-08-26 05:51:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 71 states have internal predecessors, (82), 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 05:51:53,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2021-08-26 05:51:53,475 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 21 [2021-08-26 05:51:53,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:53,475 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2021-08-26 05:51:53,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 05:51:53,475 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2021-08-26 05:51:53,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 05:51:53,476 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:53,476 INFO L512 BasicCegarLoop]: trace histogram [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 05:51:53,505 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 05:51:53,694 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 05:51:53,694 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:53,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1333477300, now seen corresponding path program 1 times [2021-08-26 05:51:53,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:53,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126869029] [2021-08-26 05:51:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:53,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:53,706 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:53,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934955501] [2021-08-26 05:51:53,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:53,707 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:53,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:53,708 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 05:51:53,709 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 05:51:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:53,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 05:51:53,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:53,995 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 05:51:53,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:53,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126869029] [2021-08-26 05:51:53,996 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:53,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934955501] [2021-08-26 05:51:53,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934955501] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:53,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:53,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 05:51:53,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803676809] [2021-08-26 05:51:53,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:51:53,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:53,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:51:53,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:51:53,999 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 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 05:51:54,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:54,136 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2021-08-26 05:51:54,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 05:51:54,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 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 05:51:54,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:54,138 INFO L225 Difference]: With dead ends: 80 [2021-08-26 05:51:54,138 INFO L226 Difference]: Without dead ends: 72 [2021-08-26 05:51:54,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:51:54,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-26 05:51:54,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2021-08-26 05:51:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.2) internal successors, (78), 69 states have internal predecessors, (78), 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 05:51:54,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-08-26 05:51:54,146 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 22 [2021-08-26 05:51:54,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:54,146 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-08-26 05:51:54,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 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 05:51:54,146 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-08-26 05:51:54,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-26 05:51:54,147 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:54,147 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:54,176 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 05:51:54,360 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 05:51:54,361 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:54,361 INFO L82 PathProgramCache]: Analyzing trace with hash -89606074, now seen corresponding path program 1 times [2021-08-26 05:51:54,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:54,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220834221] [2021-08-26 05:51:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:54,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:54,372 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:54,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496390087] [2021-08-26 05:51:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:54,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:54,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:54,374 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 05:51:54,376 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 05:51:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:54,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-26 05:51:54,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:54,897 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 05:51:54,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:54,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220834221] [2021-08-26 05:51:54,898 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:54,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496390087] [2021-08-26 05:51:54,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496390087] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:51:54,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:51:54,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:51:54,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234207258] [2021-08-26 05:51:54,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:51:54,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:54,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:51:54,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:51:54,902 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 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 05:51:55,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:55,193 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2021-08-26 05:51:55,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 05:51:55,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 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 05:51:55,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:55,195 INFO L225 Difference]: With dead ends: 105 [2021-08-26 05:51:55,195 INFO L226 Difference]: Without dead ends: 103 [2021-08-26 05:51:55,195 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 185.2ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:51:55,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-26 05:51:55,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 74. [2021-08-26 05:51:55,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 73 states have internal predecessors, (82), 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 05:51:55,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2021-08-26 05:51:55,213 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 23 [2021-08-26 05:51:55,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:55,214 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2021-08-26 05:51:55,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 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 05:51:55,215 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2021-08-26 05:51:55,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-26 05:51:55,215 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:55,216 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:55,245 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 05:51:55,433 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 05:51:55,434 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:55,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:55,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1021281049, now seen corresponding path program 1 times [2021-08-26 05:51:55,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:55,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432158590] [2021-08-26 05:51:55,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:55,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:55,453 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:55,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875595556] [2021-08-26 05:51:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:55,454 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:55,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:55,458 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 05:51:55,459 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 05:51:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:55,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 05:51:55,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:51:55,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:55,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432158590] [2021-08-26 05:51:55,951 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:55,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875595556] [2021-08-26 05:51:55,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875595556] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:51:55,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:51:55,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 05:51:55,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093375905] [2021-08-26 05:51:55,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:51:55,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:55,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:51:55,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:51:55,953 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 05:51:56,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:56,067 INFO L93 Difference]: Finished difference Result 116 states and 128 transitions. [2021-08-26 05:51:56,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 05:51:56,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2021-08-26 05:51:56,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:56,069 INFO L225 Difference]: With dead ends: 116 [2021-08-26 05:51:56,069 INFO L226 Difference]: Without dead ends: 104 [2021-08-26 05:51:56,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:51:56,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-08-26 05:51:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2021-08-26 05:51:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 95 states have internal predecessors, (109), 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 05:51:56,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 109 transitions. [2021-08-26 05:51:56,090 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 109 transitions. Word has length 25 [2021-08-26 05:51:56,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:56,090 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 109 transitions. [2021-08-26 05:51:56,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 05:51:56,091 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 109 transitions. [2021-08-26 05:51:56,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 05:51:56,097 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:56,097 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:56,129 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 05:51:56,311 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 05:51:56,311 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:56,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:56,312 INFO L82 PathProgramCache]: Analyzing trace with hash 477321350, now seen corresponding path program 1 times [2021-08-26 05:51:56,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:56,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17771731] [2021-08-26 05:51:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:56,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:56,322 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:56,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918171384] [2021-08-26 05:51:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:56,327 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:56,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:56,339 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 05:51:56,376 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 05:51:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:56,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 05:51:56,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:56,876 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 05:51:56,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:56,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17771731] [2021-08-26 05:51:56,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:56,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918171384] [2021-08-26 05:51:56,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918171384] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:51:56,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:51:56,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 05:51:56,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533284850] [2021-08-26 05:51:56,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:51:56,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:56,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:51:56,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:51:56,879 INFO L87 Difference]: Start difference. First operand 96 states and 109 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 05:51:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:57,011 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2021-08-26 05:51:57,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:51:57,012 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 29 [2021-08-26 05:51:57,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:57,012 INFO L225 Difference]: With dead ends: 116 [2021-08-26 05:51:57,013 INFO L226 Difference]: Without dead ends: 106 [2021-08-26 05:51:57,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 59.5ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:51:57,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-08-26 05:51:57,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2021-08-26 05:51:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.1938775510204083) internal successors, (117), 102 states have internal predecessors, (117), 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 05:51:57,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2021-08-26 05:51:57,021 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 29 [2021-08-26 05:51:57,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:57,021 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2021-08-26 05:51:57,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 05:51:57,022 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2021-08-26 05:51:57,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-26 05:51:57,022 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:57,022 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:57,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-08-26 05:51:57,236 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 05:51:57,237 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:57,237 INFO L82 PathProgramCache]: Analyzing trace with hash 219215494, now seen corresponding path program 2 times [2021-08-26 05:51:57,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:57,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211991226] [2021-08-26 05:51:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:57,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:57,247 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:57,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960895996] [2021-08-26 05:51:57,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:51:57,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:57,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:57,249 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 05:51:57,285 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 05:51:57,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:51:57,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:51:57,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 05:51:57,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:57,831 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 05:51:57,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:57,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211991226] [2021-08-26 05:51:57,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:57,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960895996] [2021-08-26 05:51:57,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960895996] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:51:57,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:51:57,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 05:51:57,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801957535] [2021-08-26 05:51:57,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:51:57,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:57,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:51:57,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:51:57,833 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 05:51:57,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:57,994 INFO L93 Difference]: Finished difference Result 131 states and 147 transitions. [2021-08-26 05:51:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:51:57,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 29 [2021-08-26 05:51:57,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:57,995 INFO L225 Difference]: With dead ends: 131 [2021-08-26 05:51:57,995 INFO L226 Difference]: Without dead ends: 127 [2021-08-26 05:51:57,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 60.1ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:51:57,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-26 05:51:58,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2021-08-26 05:51:58,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.201834862385321) internal successors, (131), 113 states have internal predecessors, (131), 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 05:51:58,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2021-08-26 05:51:58,006 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 29 [2021-08-26 05:51:58,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:58,006 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2021-08-26 05:51:58,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 05:51:58,006 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2021-08-26 05:51:58,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 05:51:58,009 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:58,009 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:58,034 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 05:51:58,222 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 05:51:58,222 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:58,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:58,223 INFO L82 PathProgramCache]: Analyzing trace with hash -855526903, now seen corresponding path program 1 times [2021-08-26 05:51:58,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:58,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295979318] [2021-08-26 05:51:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:58,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:58,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:58,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067836844] [2021-08-26 05:51:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:58,233 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:58,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:58,234 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 05:51:58,260 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 05:51:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:58,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-26 05:51:58,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:51:59,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:59,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295979318] [2021-08-26 05:51:59,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:59,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067836844] [2021-08-26 05:51:59,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067836844] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:51:59,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:51:59,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:51:59,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87581272] [2021-08-26 05:51:59,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:51:59,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:59,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:51:59,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:51:59,110 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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 05:51:59,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:59,298 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2021-08-26 05:51:59,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 05:51:59,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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 31 [2021-08-26 05:51:59,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:59,302 INFO L225 Difference]: With dead ends: 142 [2021-08-26 05:51:59,302 INFO L226 Difference]: Without dead ends: 140 [2021-08-26 05:51:59,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 89.7ms TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:51:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-26 05:51:59,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 114. [2021-08-26 05:51:59,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.1926605504587156) internal successors, (130), 113 states have internal predecessors, (130), 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 05:51:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2021-08-26 05:51:59,311 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 31 [2021-08-26 05:51:59,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:59,311 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2021-08-26 05:51:59,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 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 05:51:59,312 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2021-08-26 05:51:59,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 05:51:59,313 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:59,313 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:59,339 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 05:51:59,529 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 05:51:59,529 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:59,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:59,529 INFO L82 PathProgramCache]: Analyzing trace with hash 155590347, now seen corresponding path program 2 times [2021-08-26 05:51:59,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:59,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563837695] [2021-08-26 05:51:59,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:59,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:59,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:59,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [460145687] [2021-08-26 05:51:59,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:51:59,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:59,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:59,543 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 05:51:59,545 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 05:51:59,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:51:59,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:51:59,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 34 conjunts are in the unsatisfiable core [2021-08-26 05:51:59,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:00,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:00,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563837695] [2021-08-26 05:52:00,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:00,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460145687] [2021-08-26 05:52:00,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460145687] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:00,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:00,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:00,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452346917] [2021-08-26 05:52:00,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:00,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:00,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:00,459 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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 05:52:00,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:00,806 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2021-08-26 05:52:00,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:00,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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 31 [2021-08-26 05:52:00,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:00,808 INFO L225 Difference]: With dead ends: 148 [2021-08-26 05:52:00,810 INFO L226 Difference]: Without dead ends: 146 [2021-08-26 05:52:00,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 218.1ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-08-26 05:52:00,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-26 05:52:00,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 118. [2021-08-26 05:52:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 113 states have (on average 1.1858407079646018) internal successors, (134), 117 states have internal predecessors, (134), 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 05:52:00,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2021-08-26 05:52:00,820 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 31 [2021-08-26 05:52:00,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:00,820 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2021-08-26 05:52:00,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 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 05:52:00,820 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2021-08-26 05:52:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 05:52:00,821 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:00,821 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:00,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:01,042 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 05:52:01,042 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:01,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:01,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1663177194, now seen corresponding path program 2 times [2021-08-26 05:52:01,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:01,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780306125] [2021-08-26 05:52:01,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:01,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:01,052 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:01,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863056715] [2021-08-26 05:52:01,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:52:01,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:01,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:01,061 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 05:52:01,062 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 05:52:01,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:52:01,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:01,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 32 conjunts are in the unsatisfiable core [2021-08-26 05:52:01,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:02,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:02,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780306125] [2021-08-26 05:52:02,079 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:02,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863056715] [2021-08-26 05:52:02,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863056715] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:02,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:02,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:02,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146094276] [2021-08-26 05:52:02,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:02,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:02,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:02,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:02,081 INFO L87 Difference]: Start difference. First operand 118 states and 134 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 05:52:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:02,306 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2021-08-26 05:52:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 05:52:02,306 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 05:52:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:02,307 INFO L225 Difference]: With dead ends: 160 [2021-08-26 05:52:02,307 INFO L226 Difference]: Without dead ends: 148 [2021-08-26 05:52:02,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 107.6ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:02,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-08-26 05:52:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 126. [2021-08-26 05:52:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 121 states have (on average 1.1818181818181819) internal successors, (143), 125 states have internal predecessors, (143), 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 05:52:02,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2021-08-26 05:52:02,319 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 33 [2021-08-26 05:52:02,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:02,320 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2021-08-26 05:52:02,320 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 05:52:02,320 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2021-08-26 05:52:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 05:52:02,320 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:02,321 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:02,342 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 05:52:02,533 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 05:52:02,533 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:02,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:02,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1610721748, now seen corresponding path program 1 times [2021-08-26 05:52:02,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:02,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481881522] [2021-08-26 05:52:02,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:02,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:02,547 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:02,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699245903] [2021-08-26 05:52:02,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:02,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:02,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:02,549 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 05:52:02,549 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 05:52:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:02,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-26 05:52:02,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:03,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:03,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481881522] [2021-08-26 05:52:03,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:03,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699245903] [2021-08-26 05:52:03,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699245903] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:03,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:03,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:03,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118712730] [2021-08-26 05:52:03,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:03,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:03,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:03,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:03,494 INFO L87 Difference]: Start difference. First operand 126 states and 143 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 05:52:03,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:03,830 INFO L93 Difference]: Finished difference Result 162 states and 181 transitions. [2021-08-26 05:52:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 05:52:03,831 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 05:52:03,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:03,832 INFO L225 Difference]: With dead ends: 162 [2021-08-26 05:52:03,832 INFO L226 Difference]: Without dead ends: 148 [2021-08-26 05:52:03,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 141.4ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:52:03,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-08-26 05:52:03,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 119. [2021-08-26 05:52:03,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.1754385964912282) internal successors, (134), 118 states have internal predecessors, (134), 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 05:52:03,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 134 transitions. [2021-08-26 05:52:03,842 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 134 transitions. Word has length 33 [2021-08-26 05:52:03,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:03,842 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 134 transitions. [2021-08-26 05:52:03,842 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 05:52:03,842 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 134 transitions. [2021-08-26 05:52:03,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 05:52:03,842 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:03,842 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:03,872 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 05:52:04,068 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 05:52:04,069 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:04,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:04,069 INFO L82 PathProgramCache]: Analyzing trace with hash 130855945, now seen corresponding path program 3 times [2021-08-26 05:52:04,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:04,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129741644] [2021-08-26 05:52:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:04,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:04,078 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:04,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389945445] [2021-08-26 05:52:04,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:52:04,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:04,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:04,107 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 05:52:04,111 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 05:52:04,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 05:52:04,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:04,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-26 05:52:04,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-26 05:52:05,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:05,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129741644] [2021-08-26 05:52:05,464 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:05,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389945445] [2021-08-26 05:52:05,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389945445] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:05,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:05,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-08-26 05:52:05,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234387236] [2021-08-26 05:52:05,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 05:52:05,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 05:52:05,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:05,467 INFO L87 Difference]: Start difference. First operand 119 states and 134 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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 05:52:07,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:07,101 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2021-08-26 05:52:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:07,102 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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 37 [2021-08-26 05:52:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:07,103 INFO L225 Difference]: With dead ends: 172 [2021-08-26 05:52:07,103 INFO L226 Difference]: Without dead ends: 162 [2021-08-26 05:52:07,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 719.0ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-08-26 05:52:07,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-08-26 05:52:07,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 130. [2021-08-26 05:52:07,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.192) internal successors, (149), 129 states have internal predecessors, (149), 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 05:52:07,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 149 transitions. [2021-08-26 05:52:07,119 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 149 transitions. Word has length 37 [2021-08-26 05:52:07,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:07,119 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 149 transitions. [2021-08-26 05:52:07,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 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 05:52:07,120 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 149 transitions. [2021-08-26 05:52:07,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 05:52:07,120 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:07,120 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:07,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-08-26 05:52:07,344 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 05:52:07,345 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:07,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:07,345 INFO L82 PathProgramCache]: Analyzing trace with hash -127249911, now seen corresponding path program 4 times [2021-08-26 05:52:07,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:07,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211614194] [2021-08-26 05:52:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:07,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:07,361 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:07,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718750680] [2021-08-26 05:52:07,364 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 05:52:07,364 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:07,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:07,365 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 05:52:07,403 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 05:52:07,870 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 05:52:07,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:07,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 05:52:07,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:08,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:08,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211614194] [2021-08-26 05:52:08,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:08,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718750680] [2021-08-26 05:52:08,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718750680] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:08,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:08,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:08,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873632434] [2021-08-26 05:52:08,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:08,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:08,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:08,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:08,337 INFO L87 Difference]: Start difference. First operand 130 states and 149 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:08,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:08,781 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2021-08-26 05:52:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:08,782 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:08,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:08,782 INFO L225 Difference]: With dead ends: 162 [2021-08-26 05:52:08,782 INFO L226 Difference]: Without dead ends: 158 [2021-08-26 05:52:08,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 83.8ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:52:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-08-26 05:52:08,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 142. [2021-08-26 05:52:08,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 141 states have internal predecessors, (162), 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 05:52:08,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2021-08-26 05:52:08,800 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2021-08-26 05:52:08,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:08,800 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2021-08-26 05:52:08,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:08,801 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2021-08-26 05:52:08,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 05:52:08,801 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:08,801 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:08,831 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 05:52:09,020 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 05:52:09,021 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:09,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:09,021 INFO L82 PathProgramCache]: Analyzing trace with hash -127309493, now seen corresponding path program 5 times [2021-08-26 05:52:09,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:09,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422771720] [2021-08-26 05:52:09,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:09,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:09,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:09,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856997648] [2021-08-26 05:52:09,044 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 05:52:09,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:09,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:09,046 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 05:52:09,079 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 05:52:10,338 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-26 05:52:10,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:10,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 05:52:10,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:10,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:10,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422771720] [2021-08-26 05:52:10,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:10,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856997648] [2021-08-26 05:52:10,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856997648] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:10,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:10,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:10,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819379954] [2021-08-26 05:52:10,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:10,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:10,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:10,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:10,764 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:11,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:11,002 INFO L93 Difference]: Finished difference Result 162 states and 183 transitions. [2021-08-26 05:52:11,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:11,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:11,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:11,003 INFO L225 Difference]: With dead ends: 162 [2021-08-26 05:52:11,003 INFO L226 Difference]: Without dead ends: 152 [2021-08-26 05:52:11,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 78.3ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:52:11,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-08-26 05:52:11,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2021-08-26 05:52:11,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1824817518248176) internal successors, (162), 141 states have internal predecessors, (162), 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 05:52:11,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 162 transitions. [2021-08-26 05:52:11,026 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 162 transitions. Word has length 37 [2021-08-26 05:52:11,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:11,026 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 162 transitions. [2021-08-26 05:52:11,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:11,027 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 162 transitions. [2021-08-26 05:52:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 05:52:11,027 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:11,027 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:11,038 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 05:52:11,233 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 05:52:11,233 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:11,233 INFO L82 PathProgramCache]: Analyzing trace with hash 948563977, now seen corresponding path program 6 times [2021-08-26 05:52:11,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:11,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180592873] [2021-08-26 05:52:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:11,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:11,242 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:11,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918233249] [2021-08-26 05:52:11,243 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 05:52:11,243 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:11,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:11,244 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 05:52:11,246 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 05:52:11,806 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-08-26 05:52:11,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:11,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 05:52:11,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:12,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:12,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180592873] [2021-08-26 05:52:12,204 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:12,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918233249] [2021-08-26 05:52:12,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918233249] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:12,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:12,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:12,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968965787] [2021-08-26 05:52:12,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:12,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:12,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:12,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:12,206 INFO L87 Difference]: Start difference. First operand 142 states and 162 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:12,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:12,429 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2021-08-26 05:52:12,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:12,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:12,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:12,431 INFO L225 Difference]: With dead ends: 170 [2021-08-26 05:52:12,431 INFO L226 Difference]: Without dead ends: 166 [2021-08-26 05:52:12,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 81.8ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:52:12,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-26 05:52:12,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2021-08-26 05:52:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.1843971631205674) internal successors, (167), 145 states have internal predecessors, (167), 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 05:52:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2021-08-26 05:52:12,456 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 37 [2021-08-26 05:52:12,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:12,457 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2021-08-26 05:52:12,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2021-08-26 05:52:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 05:52:12,457 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:12,458 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:12,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:12,672 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 05:52:12,673 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:12,673 INFO L82 PathProgramCache]: Analyzing trace with hash 948504395, now seen corresponding path program 7 times [2021-08-26 05:52:12,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:12,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691811429] [2021-08-26 05:52:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:12,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:12,689 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:12,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523994381] [2021-08-26 05:52:12,690 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 05:52:12,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:12,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:12,691 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 05:52:12,739 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 05:52:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:13,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 05:52:13,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:13,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:13,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691811429] [2021-08-26 05:52:13,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:13,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523994381] [2021-08-26 05:52:13,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523994381] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:13,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:13,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:13,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800565328] [2021-08-26 05:52:13,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:13,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:13,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:13,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:13,728 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:13,999 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2021-08-26 05:52:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:14,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:14,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:14,001 INFO L225 Difference]: With dead ends: 166 [2021-08-26 05:52:14,001 INFO L226 Difference]: Without dead ends: 156 [2021-08-26 05:52:14,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.8ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:52:14,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-26 05:52:14,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2021-08-26 05:52:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.1879699248120301) internal successors, (158), 137 states have internal predecessors, (158), 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 05:52:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2021-08-26 05:52:14,016 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 37 [2021-08-26 05:52:14,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:14,016 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2021-08-26 05:52:14,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2021-08-26 05:52:14,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 05:52:14,017 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:14,017 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:14,049 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 05:52:14,240 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 05:52:14,240 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:14,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:14,240 INFO L82 PathProgramCache]: Analyzing trace with hash 690398539, now seen corresponding path program 8 times [2021-08-26 05:52:14,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:14,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160562692] [2021-08-26 05:52:14,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:14,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:14,254 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:14,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577012468] [2021-08-26 05:52:14,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:52:14,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:14,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:14,256 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 05:52:14,289 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 05:52:14,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:52:14,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:14,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 05:52:14,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:15,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:15,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160562692] [2021-08-26 05:52:15,339 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:15,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577012468] [2021-08-26 05:52:15,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577012468] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:15,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:15,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:15,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645149128] [2021-08-26 05:52:15,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:15,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:15,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:15,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:15,341 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:15,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:15,543 INFO L93 Difference]: Finished difference Result 166 states and 188 transitions. [2021-08-26 05:52:15,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:15,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:15,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:15,545 INFO L225 Difference]: With dead ends: 166 [2021-08-26 05:52:15,545 INFO L226 Difference]: Without dead ends: 162 [2021-08-26 05:52:15,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.8ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:52:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-08-26 05:52:15,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 142. [2021-08-26 05:52:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.1897810218978102) internal successors, (163), 141 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 05:52:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2021-08-26 05:52:15,561 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 37 [2021-08-26 05:52:15,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:15,561 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2021-08-26 05:52:15,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 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 05:52:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2021-08-26 05:52:15,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-26 05:52:15,562 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:15,562 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:15,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-08-26 05:52:15,789 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 05:52:15,789 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:15,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1198667980, now seen corresponding path program 2 times [2021-08-26 05:52:15,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:15,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860404890] [2021-08-26 05:52:15,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:15,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:15,805 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:15,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119173883] [2021-08-26 05:52:15,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:52:15,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:15,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:15,820 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 05:52:15,822 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 05:52:16,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:52:16,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:16,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 38 conjunts are in the unsatisfiable core [2021-08-26 05:52:16,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:17,400 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 05:52:17,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:17,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860404890] [2021-08-26 05:52:17,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:17,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119173883] [2021-08-26 05:52:17,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119173883] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:17,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:17,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 05:52:17,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688137310] [2021-08-26 05:52:17,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 05:52:17,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:17,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 05:52:17,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:52:17,403 INFO L87 Difference]: Start difference. First operand 142 states and 163 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:22,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:22,904 INFO L93 Difference]: Finished difference Result 177 states and 200 transitions. [2021-08-26 05:52:22,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:52:22,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-26 05:52:22,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:22,906 INFO L225 Difference]: With dead ends: 177 [2021-08-26 05:52:22,906 INFO L226 Difference]: Without dead ends: 175 [2021-08-26 05:52:22,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 465.2ms TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-08-26 05:52:22,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 146. [2021-08-26 05:52:22,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.1843971631205674) internal successors, (167), 145 states have internal predecessors, (167), 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 05:52:22,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2021-08-26 05:52:22,924 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 39 [2021-08-26 05:52:22,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:22,924 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2021-08-26 05:52:22,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:22,925 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2021-08-26 05:52:22,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-26 05:52:22,925 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:22,926 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:22,971 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 05:52:23,143 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 05:52:23,144 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:23,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:23,144 INFO L82 PathProgramCache]: Analyzing trace with hash -2085182066, now seen corresponding path program 3 times [2021-08-26 05:52:23,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:23,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485094302] [2021-08-26 05:52:23,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:23,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:23,153 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:23,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560571223] [2021-08-26 05:52:23,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:52:23,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:23,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:23,155 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 05:52:23,155 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 05:52:23,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 05:52:23,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:23,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 05:52:23,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-08-26 05:52:24,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:24,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485094302] [2021-08-26 05:52:24,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:24,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560571223] [2021-08-26 05:52:24,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560571223] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:24,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:24,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:52:24,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289271588] [2021-08-26 05:52:24,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:52:24,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:24,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:52:24,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:52:24,217 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 05:52:25,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:25,519 INFO L93 Difference]: Finished difference Result 146 states and 167 transitions. [2021-08-26 05:52:25,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:52:25,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 39 [2021-08-26 05:52:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:25,520 INFO L225 Difference]: With dead ends: 146 [2021-08-26 05:52:25,520 INFO L226 Difference]: Without dead ends: 132 [2021-08-26 05:52:25,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 72.0ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:25,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-26 05:52:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 91. [2021-08-26 05:52:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 89 states have (on average 1.1123595505617978) internal successors, (99), 90 states have internal predecessors, (99), 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 05:52:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2021-08-26 05:52:25,534 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 39 [2021-08-26 05:52:25,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:25,534 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2021-08-26 05:52:25,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 05:52:25,534 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2021-08-26 05:52:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:25,535 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:25,535 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:25,555 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 05:52:25,735 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 05:52:25,736 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:25,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:25,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1388479860, now seen corresponding path program 9 times [2021-08-26 05:52:25,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:25,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858351885] [2021-08-26 05:52:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:25,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:25,746 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:25,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954870773] [2021-08-26 05:52:25,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:52:25,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:25,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:25,748 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 05:52:25,751 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 05:52:26,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 05:52:26,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:26,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:52:26,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-08-26 05:52:27,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:27,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858351885] [2021-08-26 05:52:27,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:27,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954870773] [2021-08-26 05:52:27,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954870773] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:27,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:27,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 05:52:27,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251526081] [2021-08-26 05:52:27,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 05:52:27,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:27,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 05:52:27,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:52:27,061 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 05:52:28,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:28,033 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2021-08-26 05:52:28,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:52:28,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 45 [2021-08-26 05:52:28,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:28,034 INFO L225 Difference]: With dead ends: 134 [2021-08-26 05:52:28,034 INFO L226 Difference]: Without dead ends: 124 [2021-08-26 05:52:28,034 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 383.5ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:52:28,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-08-26 05:52:28,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 99. [2021-08-26 05:52:28,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 97 states have (on average 1.1134020618556701) internal successors, (108), 98 states have internal predecessors, (108), 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 05:52:28,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2021-08-26 05:52:28,047 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 45 [2021-08-26 05:52:28,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:28,047 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2021-08-26 05:52:28,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 05:52:28,048 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2021-08-26 05:52:28,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:28,048 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:28,049 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:28,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-08-26 05:52:28,256 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 05:52:28,257 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:28,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:28,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1388539442, now seen corresponding path program 10 times [2021-08-26 05:52:28,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:28,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503107243] [2021-08-26 05:52:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:28,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:28,264 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:28,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280884843] [2021-08-26 05:52:28,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-26 05:52:28,266 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:28,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:28,267 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 05:52:28,304 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 05:52:29,073 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-26 05:52:29,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:29,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:52:29,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:29,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:29,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503107243] [2021-08-26 05:52:29,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:29,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280884843] [2021-08-26 05:52:29,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280884843] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:29,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:29,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:29,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702724640] [2021-08-26 05:52:29,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:29,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:29,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:29,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:29,634 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 05:52:29,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:29,971 INFO L93 Difference]: Finished difference Result 133 states and 145 transitions. [2021-08-26 05:52:29,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:52:29,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 45 [2021-08-26 05:52:29,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:29,972 INFO L225 Difference]: With dead ends: 133 [2021-08-26 05:52:29,972 INFO L226 Difference]: Without dead ends: 123 [2021-08-26 05:52:29,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 111.3ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:29,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-08-26 05:52:29,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 107. [2021-08-26 05:52:29,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.1142857142857143) internal successors, (117), 106 states have internal predecessors, (117), 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 05:52:29,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2021-08-26 05:52:29,990 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 45 [2021-08-26 05:52:29,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:29,990 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2021-08-26 05:52:29,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 05:52:29,991 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2021-08-26 05:52:29,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:29,991 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:29,991 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:30,013 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 05:52:30,192 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 05:52:30,193 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:30,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:30,194 INFO L82 PathProgramCache]: Analyzing trace with hash -312665972, now seen corresponding path program 11 times [2021-08-26 05:52:30,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:30,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79561456] [2021-08-26 05:52:30,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:30,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:30,202 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:30,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320953924] [2021-08-26 05:52:30,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-26 05:52:30,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:30,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:30,204 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 05:52:30,206 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 05:52:31,406 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-08-26 05:52:31,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:31,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:52:31,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:31,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:31,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79561456] [2021-08-26 05:52:31,956 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:31,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320953924] [2021-08-26 05:52:31,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320953924] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:31,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:31,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:31,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446137950] [2021-08-26 05:52:31,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:31,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:31,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:31,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:31,958 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 05:52:32,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:32,262 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2021-08-26 05:52:32,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:52:32,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 45 [2021-08-26 05:52:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:32,264 INFO L225 Difference]: With dead ends: 141 [2021-08-26 05:52:32,264 INFO L226 Difference]: Without dead ends: 131 [2021-08-26 05:52:32,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:32,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-08-26 05:52:32,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2021-08-26 05:52:32,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 114 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2021-08-26 05:52:32,280 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 45 [2021-08-26 05:52:32,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:32,280 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2021-08-26 05:52:32,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 05:52:32,281 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2021-08-26 05:52:32,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:32,281 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:32,281 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:32,291 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 05:52:32,486 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 05:52:32,486 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:32,487 INFO L82 PathProgramCache]: Analyzing trace with hash -312725554, now seen corresponding path program 12 times [2021-08-26 05:52:32,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:32,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735803226] [2021-08-26 05:52:32,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:32,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:32,512 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:32,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048019160] [2021-08-26 05:52:32,512 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-26 05:52:32,512 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:32,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:32,513 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 05:52:32,520 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 05:52:33,402 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-26 05:52:33,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:33,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:52:33,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:33,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:33,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735803226] [2021-08-26 05:52:33,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:33,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048019160] [2021-08-26 05:52:33,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048019160] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:33,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:33,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:33,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943700921] [2021-08-26 05:52:33,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:33,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:33,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:33,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:33,907 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 05:52:34,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:34,188 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2021-08-26 05:52:34,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:52:34,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 45 [2021-08-26 05:52:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:34,189 INFO L225 Difference]: With dead ends: 141 [2021-08-26 05:52:34,189 INFO L226 Difference]: Without dead ends: 131 [2021-08-26 05:52:34,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 102.5ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:34,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-08-26 05:52:34,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2021-08-26 05:52:34,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 114 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2021-08-26 05:52:34,208 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 45 [2021-08-26 05:52:34,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:34,208 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2021-08-26 05:52:34,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 05:52:34,209 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2021-08-26 05:52:34,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:34,209 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:34,209 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:34,238 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 05:52:34,424 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 05:52:34,425 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:34,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:34,425 INFO L82 PathProgramCache]: Analyzing trace with hash -570831410, now seen corresponding path program 13 times [2021-08-26 05:52:34,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:34,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324205671] [2021-08-26 05:52:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:34,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:34,436 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:34,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583011274] [2021-08-26 05:52:34,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-26 05:52:34,437 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:34,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:34,438 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 05:52:34,439 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 05:52:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:52:35,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:52:35,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:35,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:35,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324205671] [2021-08-26 05:52:35,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:35,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583011274] [2021-08-26 05:52:35,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583011274] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:35,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:35,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:35,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147771395] [2021-08-26 05:52:35,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:35,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:35,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:35,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:35,919 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 05:52:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:36,217 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2021-08-26 05:52:36,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:52:36,223 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 45 [2021-08-26 05:52:36,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:36,224 INFO L225 Difference]: With dead ends: 141 [2021-08-26 05:52:36,224 INFO L226 Difference]: Without dead ends: 131 [2021-08-26 05:52:36,224 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 99.7ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:36,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-08-26 05:52:36,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2021-08-26 05:52:36,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 114 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2021-08-26 05:52:36,248 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 45 [2021-08-26 05:52:36,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:36,249 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2021-08-26 05:52:36,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 05:52:36,249 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2021-08-26 05:52:36,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:36,250 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:36,250 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:36,273 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 05:52:36,456 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 05:52:36,457 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:36,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:36,457 INFO L82 PathProgramCache]: Analyzing trace with hash -570890992, now seen corresponding path program 14 times [2021-08-26 05:52:36,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:36,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261785358] [2021-08-26 05:52:36,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:36,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:36,465 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:36,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608561636] [2021-08-26 05:52:36,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:52:36,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:36,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:36,469 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 05:52:36,470 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 05:52:37,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:52:37,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:37,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:52:37,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:52:37,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:37,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261785358] [2021-08-26 05:52:37,985 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:37,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608561636] [2021-08-26 05:52:37,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608561636] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:37,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:37,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:52:37,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762363378] [2021-08-26 05:52:37,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:52:37,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:37,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:52:37,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:52:37,986 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 05:52:38,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:38,200 INFO L93 Difference]: Finished difference Result 141 states and 154 transitions. [2021-08-26 05:52:38,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:52:38,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 45 [2021-08-26 05:52:38,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:38,201 INFO L225 Difference]: With dead ends: 141 [2021-08-26 05:52:38,202 INFO L226 Difference]: Without dead ends: 131 [2021-08-26 05:52:38,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:52:38,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-08-26 05:52:38,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 115. [2021-08-26 05:52:38,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 113 states have (on average 1.1150442477876106) internal successors, (126), 114 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:52:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 126 transitions. [2021-08-26 05:52:38,233 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 126 transitions. Word has length 45 [2021-08-26 05:52:38,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:38,233 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 126 transitions. [2021-08-26 05:52:38,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 05:52:38,233 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 126 transitions. [2021-08-26 05:52:38,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 05:52:38,234 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:52:38,234 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:52:38,265 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 05:52:38,448 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 05:52:38,449 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:52:38,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:52:38,449 INFO L82 PathProgramCache]: Analyzing trace with hash -620841332, now seen corresponding path program 15 times [2021-08-26 05:52:38,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:52:38,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481749808] [2021-08-26 05:52:38,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:52:38,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:52:38,460 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:52:38,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1592890273] [2021-08-26 05:52:38,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:52:38,461 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:52:38,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:52:38,462 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 05:52:38,464 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 05:52:39,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 05:52:39,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:52:39,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 37 conjunts are in the unsatisfiable core [2021-08-26 05:52:39,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:52:39,950 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-08-26 05:52:39,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:52:39,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481749808] [2021-08-26 05:52:39,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:52:39,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592890273] [2021-08-26 05:52:39,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592890273] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:52:39,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:52:39,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-08-26 05:52:39,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026361985] [2021-08-26 05:52:39,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 05:52:39,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:52:39,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 05:52:39,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:52:39,952 INFO L87 Difference]: Start difference. First operand 115 states and 126 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 05:52:52,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:52:52,050 INFO L93 Difference]: Finished difference Result 127 states and 139 transitions. [2021-08-26 05:52:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:52:52,050 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 45 [2021-08-26 05:52:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:52:52,051 INFO L225 Difference]: With dead ends: 127 [2021-08-26 05:52:52,051 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 05:52:52,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 398.7ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-08-26 05:52:52,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 05:52:52,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 05:52:52,052 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 05:52:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 05:52:52,052 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-08-26 05:52:52,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:52:52,053 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 05:52:52,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 05:52:52,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 05:52:52,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 05:52:52,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:52,055 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:52,056 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:52,056 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:52,056 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:52,056 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:52,056 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:52:52,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-08-26 05:52:52,256 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 05:52:52,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 05:52:52,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:52,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:52,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:52,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:52,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:53,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:53,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:53,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:52:53,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:53:22,624 WARN L207 SmtUtils]: Spent 13.91 s on a formula simplification. DAG size of input: 186 DAG size of output: 44 [2021-08-26 05:53:25,252 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 52) no Hoare annotation was computed. [2021-08-26 05:53:25,252 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:25,252 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:25,252 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (and (= (+ (* 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) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 10) (<= 1 ULTIMATE.start_main_~x~0) (= 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))) (<= ULTIMATE.start_main_~y~0 10)) [2021-08-26 05:53:25,252 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:25,253 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse1 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (and (= (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (+ .cse0 (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0) .cse1)) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 10) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ .cse0 .cse1)) (<= ULTIMATE.start_main_~y~0 10))) [2021-08-26 05:53:25,253 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:25,253 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 40 41) the Hoare annotation is: (and (= (+ (* 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) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 10) (<= 1 ULTIMATE.start_main_~x~0) (= 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))) (<= ULTIMATE.start_main_~y~0 10)) [2021-08-26 05:53:25,253 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:25,253 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 10 16) the Hoare annotation is: (and (= (+ (* 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) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~x~0 10) (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 10) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) [2021-08-26 05:53:25,253 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:25,253 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:25,253 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 05:53:25,254 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (= ULTIMATE.start_main_~p~0 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse7 (= ULTIMATE.start_main_~q~0 0)) (.cse8 (= ULTIMATE.start_main_~s~0 1)) (.cse2 (<= ULTIMATE.start_main_~x~0 10)) (.cse3 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 10)) (.cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (= (+ (* 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 (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse6 .cse1 .cse7 (= ULTIMATE.start_main_~r~0 0) .cse8 .cse2 .cse3 .cse4 .cse9) (and .cse0 .cse6 .cse1 .cse7 .cse8 .cse2 .cse3 .cse4 .cse5 .cse9))) [2021-08-26 05:53:25,254 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 05:53:25,254 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:25,254 INFO L853 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= ULTIMATE.start_main_~x~0 10)) (.cse3 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 10))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~s~0 1) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (= (+ (* 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 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))))) [2021-08-26 05:53:25,254 INFO L857 garLoopResultBuilder]: For program point L11-18(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:53:25,254 INFO L860 garLoopResultBuilder]: At program point L11-20(lines 10 16) the Hoare annotation is: true [2021-08-26 05:53:25,254 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:25,254 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:25,254 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:25,254 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:25,254 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:25,254 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:25,255 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:53:25,255 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:25,255 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:25,255 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:25,255 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:53:25,255 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:53:25,255 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:53:25,255 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:53:25,255 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 05:53:25,255 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:25,256 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-26 05:53:25,256 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-08-26 05:53:25,256 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-08-26 05:53:25,256 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-08-26 05:53:25,256 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 05:53:25,256 INFO L860 garLoopResultBuilder]: At program point L58(lines 18 59) the Hoare annotation is: true [2021-08-26 05:53:25,256 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:53:25,256 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2021-08-26 05:53:25,256 INFO L853 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (<= ULTIMATE.start_main_~x~0 10)) (.cse3 (<= 1 ULTIMATE.start_main_~x~0)) (.cse4 (= 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)))) (.cse5 (<= ULTIMATE.start_main_~y~0 10))) (or (and (= (+ (* 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 (= (+ (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) 1) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~s~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse2 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-08-26 05:53:25,259 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 05:53:25,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 05:53:25 BoogieIcfgContainer [2021-08-26 05:53:25,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 05:53:25,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 05:53:25,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 05:53:25,282 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 05:53:25,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:51:49" (3/4) ... [2021-08-26 05:53:25,300 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 05:53:25,309 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-08-26 05:53:25,310 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 05:53:25,310 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:53:25,311 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:53:25,340 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 05:53:25,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 05:53:25,341 INFO L168 Benchmark]: Toolchain (without parser) took 96833.89 ms. Allocated memory was 50.3 MB in the beginning and 394.3 MB in the end (delta: 343.9 MB). Free memory was 27.6 MB in the beginning and 96.3 MB in the end (delta: -68.7 MB). Peak memory consumption was 274.7 MB. Max. memory is 16.1 GB. [2021-08-26 05:53:25,342 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 50.3 MB. Free memory was 32.1 MB in the beginning and 32.0 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:53:25,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.36 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.4 MB in the beginning and 44.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-08-26 05:53:25,342 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.40 ms. Allocated memory is still 60.8 MB. Free memory was 44.6 MB in the beginning and 42.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:53:25,343 INFO L168 Benchmark]: Boogie Preprocessor took 42.63 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 41.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:53:25,343 INFO L168 Benchmark]: RCFGBuilder took 513.69 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 39.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2021-08-26 05:53:25,343 INFO L168 Benchmark]: TraceAbstraction took 95871.96 ms. Allocated memory was 60.8 MB in the beginning and 394.3 MB in the end (delta: 333.4 MB). Free memory was 39.2 MB in the beginning and 99.5 MB in the end (delta: -60.3 MB). Peak memory consumption was 306.1 MB. Max. memory is 16.1 GB. [2021-08-26 05:53:25,344 INFO L168 Benchmark]: Witness Printer took 58.94 ms. Allocated memory is still 394.3 MB. Free memory was 99.5 MB in the beginning and 96.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 05:53:25,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 50.3 MB. Free memory was 32.1 MB in the beginning and 32.0 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.36 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.4 MB in the beginning and 44.6 MB in the end (delta: -17.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.40 ms. Allocated memory is still 60.8 MB. Free memory was 44.6 MB in the beginning and 42.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.63 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 41.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 513.69 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 39.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 95871.96 ms. Allocated memory was 60.8 MB in the beginning and 394.3 MB in the end (delta: 333.4 MB). Free memory was 39.2 MB in the beginning and 99.5 MB in the end (delta: -60.3 MB). Peak memory consumption was 306.1 MB. Max. memory is 16.1 GB. * Witness Printer took 58.94 ms. Allocated memory is still 394.3 MB. Free memory was 99.5 MB in the beginning and 96.3 MB in the end (delta: 3.1 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 - 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, 44 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 95788.5ms, OverallIterations: 30, TraceHistogramMax: 5, EmptinessCheckTime: 32.4ms, AutomataDifference: 27194.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 32994.6ms, InitialAbstractionConstructionTime: 12.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1027 SDtfs, 1271 SDslu, 3249 SDs, 0 SdLazy, 4328 SolverSat, 383 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 23005.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 776 SyntacticMatches, 3 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 4462.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=146occurred in iteration=19, InterpolantAutomatonStates: 266, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 420.2ms AutomataMinimizationTime, 30 MinimizatonAttempts, 493 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 104 NumberOfFragments, 462 HoareAnnotationTreeSize, 9 FomulaSimplifications, 1301751 FormulaSimplificationTreeSizeReduction, 1162.5ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 353973 FormulaSimplificationTreeSizeReductionInter, 31822.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 238.6ms SsaConstructionTime, 1843.7ms SatisfiabilityAnalysisTime, 12938.0ms InterpolantComputationTime, 970 NumberOfCodeBlocks, 908 NumberOfCodeBlocksAsserted, 57 NumberOfCheckSat, 940 ConstructedInterpolants, 2 QuantifiedInterpolants, 10737 SizeOfPredicates, 234 NumberOfNonLiveVariables, 3661 ConjunctsInSsa, 715 ConjunctsInUnsatCore, 30 InterpolantComputations, 6 PerfectInterpolantSequences, 129/752 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 7 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((cond == 1 && 1 <= y) && q == 0) && s == 1) && x <= 10) && 1 <= x) && y <= 10) && b == y) || (((((((s * y + q * x == b && cond == 1) && 1 <= y) && x <= 10) && 1 <= x) && y <= 10) && b == a) && b == r * y + p * x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((b + a == r * y + s * y + q * x + p * x && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10) || ((((((((((cond == 1 && p == 1) && 1 <= y) && q == 0) && r == 0) && s == 1) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10) && b == y) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && x <= 10) && 1 <= x) && y <= 10) && b == a) && b == r * y + p * x - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && x <= 10) && 1 <= x) && y <= 10) && b == a) && b == r * y + p * x) || ((((((((((cond == 1 && a == x) && p == 1) && 1 <= y) && q == 0) && r == 0) && s == 1) && x <= 10) && 1 <= x) && y <= 10) && b == y)) || (((((((((cond == 1 && p == 1) && 1 <= y) && q == 0) && s == 1) && x <= 10) && 1 <= x) && y <= 10) && b == a) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((s * y + q * x == b && cond == 1) && q * r + 1 == p * s) && 1 == cond) && 1 <= y) && x <= 10) && 1 <= x) && a == r * y + p * x) && y <= 10 RESULT: Ultimate proved your program to be correct! [2021-08-26 05:53:25,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...