./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.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/egcd3-ll_valuebound2.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 c9a431cc3dce37048e7415db5e7aefee11ebb182 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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 06:02:01,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 06:02:01,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 06:02:01,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 06:02:01,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 06:02:01,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 06:02:01,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 06:02:01,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 06:02:01,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 06:02:01,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 06:02:01,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 06:02:01,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 06:02:01,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 06:02:01,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 06:02:01,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 06:02:01,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 06:02:01,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 06:02:01,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 06:02:01,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 06:02:01,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 06:02:01,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 06:02:01,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 06:02:01,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 06:02:01,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 06:02:01,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 06:02:01,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 06:02:01,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 06:02:01,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 06:02:01,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 06:02:01,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 06:02:01,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:02:01,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:02:01,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:02:01,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:02:01,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:02:01,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:02:01,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:02:01,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:02:01,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:02:01,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:02:01,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:02:01,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 06:02:01,852 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:02:01,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:02:01,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:02:01,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:02:01,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:02:01,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:02:01,856 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:02:01,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:02:01,856 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:02:01,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 06:02:01,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:02:01,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:02:01,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:02:01,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:02:01,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:02:01,858 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:02:01,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:02:01,858 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:02:01,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:02:01,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:02:01,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:02:01,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:02:01,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:02:01,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:02:01,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:02:01,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:02:01,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 06:02:01,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 06:02:01,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:02:01,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:02:01,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9a431cc3dce37048e7415db5e7aefee11ebb182 [2021-08-26 06:02:02,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:02:02,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:02:02,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:02:02,239 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:02:02,239 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:02:02,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2021-08-26 06:02:02,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8e8931b/dcd614e9a23841fe8ea6acaf9d5020f9/FLAG6a476dae8 [2021-08-26 06:02:02,639 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:02:02,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2021-08-26 06:02:02,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8e8931b/dcd614e9a23841fe8ea6acaf9d5020f9/FLAG6a476dae8 [2021-08-26 06:02:03,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a8e8931b/dcd614e9a23841fe8ea6acaf9d5020f9 [2021-08-26 06:02:03,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:02:03,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:02:03,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:02:03,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:02:03,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:02:03,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:02:03" (1/1) ... [2021-08-26 06:02:03,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74960a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:02:03, skipping insertion in model container [2021-08-26 06:02:03,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:02:03" (1/1) ... [2021-08-26 06:02:03,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:02:03,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:02:03,174 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/egcd3-ll_valuebound2.c[490,503] [2021-08-26 06:02:03,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:02:03,189 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:02:03,196 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/egcd3-ll_valuebound2.c[490,503] [2021-08-26 06:02:03,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:02:03,238 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:02:03,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:02:03 WrapperNode [2021-08-26 06:02:03,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:02:03,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:02:03,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:02:03,245 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:02:03,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:02:03" (1/1) ... [2021-08-26 06:02:03,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:02:03" (1/1) ... [2021-08-26 06:02:03,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:02:03,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:02:03,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:02:03,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:02:03,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:02:03" (1/1) ... [2021-08-26 06:02:03,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:02:03" (1/1) ... [2021-08-26 06:02:03,293 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:02:03" (1/1) ... [2021-08-26 06:02:03,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:02:03" (1/1) ... [2021-08-26 06:02:03,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:02:03" (1/1) ... [2021-08-26 06:02:03,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:02:03" (1/1) ... [2021-08-26 06:02:03,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:02:03" (1/1) ... [2021-08-26 06:02:03,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:02:03,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:02:03,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:02:03,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:02:03,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:02:03" (1/1) ... [2021-08-26 06:02:03,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:02:03,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:03,353 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 06:02:03,371 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 06:02:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 06:02:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:02:03,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:02:03,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:02:03,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:02:03,711 INFO L299 CfgBuilder]: Removed 25 assume(true) statements. [2021-08-26 06:02:03,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:02:03 BoogieIcfgContainer [2021-08-26 06:02:03,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:02:03,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:02:03,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:02:03,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:02:03,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:02:03" (1/3) ... [2021-08-26 06:02:03,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e419fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:02:03, skipping insertion in model container [2021-08-26 06:02:03,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:02:03" (2/3) ... [2021-08-26 06:02:03,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e419fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:02:03, skipping insertion in model container [2021-08-26 06:02:03,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:02:03" (3/3) ... [2021-08-26 06:02:03,719 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2021-08-26 06:02:03,724 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:02:03,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-08-26 06:02:03,760 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:02:03,766 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 06:02:03,766 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-26 06:02:03,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 40 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 06:02:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 06:02:03,780 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:03,781 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:03,781 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:03,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:03,790 INFO L82 PathProgramCache]: Analyzing trace with hash -174497841, now seen corresponding path program 1 times [2021-08-26 06:02:03,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:03,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314410593] [2021-08-26 06:02:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:03,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:03,923 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 06:02:03,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:03,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314410593] [2021-08-26 06:02:03,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314410593] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:02:03,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:02:03,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 06:02:03,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448492494] [2021-08-26 06:02:03,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:02:03,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:03,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:02:03,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:02:03,959 INFO L87 Difference]: Start difference. First operand has 41 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 40 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:03,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:03,988 INFO L93 Difference]: Finished difference Result 79 states and 112 transitions. [2021-08-26 06:02:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:02:03,989 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-26 06:02:03,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:03,994 INFO L225 Difference]: With dead ends: 79 [2021-08-26 06:02:03,994 INFO L226 Difference]: Without dead ends: 37 [2021-08-26 06:02:04,010 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 06:02:04,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-26 06:02:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-26 06:02:04,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.21875) internal successors, (39), 36 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 06:02:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-08-26 06:02:04,045 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 14 [2021-08-26 06:02:04,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:04,045 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-08-26 06:02:04,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-08-26 06:02:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 06:02:04,046 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:04,046 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:04,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 06:02:04,047 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:04,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:04,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1454170515, now seen corresponding path program 1 times [2021-08-26 06:02:04,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:04,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181717055] [2021-08-26 06:02:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:04,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:04,069 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:04,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [108413182] [2021-08-26 06:02:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:04,079 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:04,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:04,113 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 06:02:04,133 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 06:02:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:04,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 06:02:04,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:04,285 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 06:02:04,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:04,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181717055] [2021-08-26 06:02:04,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:04,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108413182] [2021-08-26 06:02:04,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108413182] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:02:04,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:02:04,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 06:02:04,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831987792] [2021-08-26 06:02:04,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 06:02:04,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:04,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 06:02:04,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:02:04,289 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 06:02:04,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:04,402 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-08-26 06:02:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:02:04,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 06:02:04,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:04,404 INFO L225 Difference]: With dead ends: 64 [2021-08-26 06:02:04,407 INFO L226 Difference]: Without dead ends: 60 [2021-08-26 06:02:04,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:02:04,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-08-26 06:02:04,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2021-08-26 06:02:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 38 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 06:02:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-08-26 06:02:04,416 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 15 [2021-08-26 06:02:04,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:04,416 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-08-26 06:02:04,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 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 06:02:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-08-26 06:02:04,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 06:02:04,417 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:04,417 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 06:02:04,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-26 06:02:04,633 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 06:02:04,633 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:04,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:04,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1580206288, now seen corresponding path program 1 times [2021-08-26 06:02:04,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:04,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938018462] [2021-08-26 06:02:04,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:04,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:04,646 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:04,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493107541] [2021-08-26 06:02:04,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:04,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:04,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:04,647 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 06:02:04,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 06:02:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:04,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-26 06:02:04,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:05,342 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 06:02:05,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:05,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938018462] [2021-08-26 06:02:05,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:05,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493107541] [2021-08-26 06:02:05,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493107541] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:02:05,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:02:05,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-26 06:02:05,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165546984] [2021-08-26 06:02:05,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 06:02:05,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:05,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 06:02:05,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-26 06:02:05,348 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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 06:02:05,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:05,848 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2021-08-26 06:02:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 06:02:05,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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 06:02:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:05,850 INFO L225 Difference]: With dead ends: 79 [2021-08-26 06:02:05,850 INFO L226 Difference]: Without dead ends: 77 [2021-08-26 06:02:05,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 535.9ms TimeCoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2021-08-26 06:02:05,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-08-26 06:02:05,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 51. [2021-08-26 06:02:05,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 50 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 06:02:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-08-26 06:02:05,858 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 17 [2021-08-26 06:02:05,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:05,858 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-08-26 06:02:05,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 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 06:02:05,859 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-08-26 06:02:05,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-26 06:02:05,860 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:05,860 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:05,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-08-26 06:02:06,078 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 06:02:06,081 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:06,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:06,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1840022701, now seen corresponding path program 1 times [2021-08-26 06:02:06,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:06,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353060357] [2021-08-26 06:02:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:06,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:06,105 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:06,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591699585] [2021-08-26 06:02:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:06,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:06,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:06,107 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 06:02:06,108 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 06:02:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:06,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 23 conjunts are in the unsatisfiable core [2021-08-26 06:02:06,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:06,673 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 06:02:06,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:06,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353060357] [2021-08-26 06:02:06,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:06,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591699585] [2021-08-26 06:02:06,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591699585] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:02:06,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:02:06,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-26 06:02:06,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058609890] [2021-08-26 06:02:06,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 06:02:06,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:06,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 06:02:06,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-08-26 06:02:06,675 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:07,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:07,008 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2021-08-26 06:02:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 06:02:07,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-08-26 06:02:07,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:07,011 INFO L225 Difference]: With dead ends: 75 [2021-08-26 06:02:07,011 INFO L226 Difference]: Without dead ends: 73 [2021-08-26 06:02:07,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 306.7ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-08-26 06:02:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-26 06:02:07,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2021-08-26 06:02:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:07,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-08-26 06:02:07,017 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 19 [2021-08-26 06:02:07,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:07,017 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-08-26 06:02:07,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:07,017 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-08-26 06:02:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 06:02:07,017 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:07,018 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:07,063 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 06:02:07,240 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 06:02:07,241 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:07,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:07,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1412177226, now seen corresponding path program 1 times [2021-08-26 06:02:07,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:07,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961801608] [2021-08-26 06:02:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:07,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:07,257 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:07,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123520866] [2021-08-26 06:02:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:07,258 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:07,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:07,272 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 06:02:07,273 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 06:02:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:07,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 06:02:07,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:02:07,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:07,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961801608] [2021-08-26 06:02:07,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:07,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123520866] [2021-08-26 06:02:07,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123520866] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:07,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:07,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 06:02:07,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145494087] [2021-08-26 06:02:07,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 06:02:07,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:07,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 06:02:07,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:02:07,481 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 06:02:07,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:07,593 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2021-08-26 06:02:07,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 06:02:07,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 06:02:07,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:07,597 INFO L225 Difference]: With dead ends: 140 [2021-08-26 06:02:07,598 INFO L226 Difference]: Without dead ends: 136 [2021-08-26 06:02:07,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-08-26 06:02:07,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-08-26 06:02:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 75. [2021-08-26 06:02:07,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.3) internal successors, (91), 74 states have internal predecessors, (91), 0 states have call successors, (0), 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 06:02:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 91 transitions. [2021-08-26 06:02:07,604 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 91 transitions. Word has length 20 [2021-08-26 06:02:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:07,604 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 91 transitions. [2021-08-26 06:02:07,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 06:02:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 91 transitions. [2021-08-26 06:02:07,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 06:02:07,605 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:07,605 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] [2021-08-26 06:02:07,624 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 06:02:07,825 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 06:02:07,825 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:07,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:07,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1264867958, now seen corresponding path program 1 times [2021-08-26 06:02:07,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:07,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104204108] [2021-08-26 06:02:07,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:07,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:07,835 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:07,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519758748] [2021-08-26 06:02:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:07,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:07,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:07,857 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 06:02:07,888 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 06:02:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:08,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 06:02:08,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:08,218 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 06:02:08,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:08,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104204108] [2021-08-26 06:02:08,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:08,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519758748] [2021-08-26 06:02:08,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519758748] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:02:08,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:02:08,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 06:02:08,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133994902] [2021-08-26 06:02:08,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 06:02:08,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:08,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 06:02:08,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:02:08,219 INFO L87 Difference]: Start difference. First operand 75 states and 91 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 06:02:08,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:08,348 INFO L93 Difference]: Finished difference Result 95 states and 110 transitions. [2021-08-26 06:02:08,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 06:02:08,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 06:02:08,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:08,349 INFO L225 Difference]: With dead ends: 95 [2021-08-26 06:02:08,349 INFO L226 Difference]: Without dead ends: 93 [2021-08-26 06:02:08,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 84.3ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-08-26 06:02:08,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-26 06:02:08,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2021-08-26 06:02:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 83 states have internal predecessors, (102), 0 states have call successors, (0), 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 06:02:08,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2021-08-26 06:02:08,357 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 21 [2021-08-26 06:02:08,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:08,357 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2021-08-26 06:02:08,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 06:02:08,357 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2021-08-26 06:02:08,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 06:02:08,357 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:08,357 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:08,377 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 06:02:08,574 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 06:02:08,575 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:08,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:08,575 INFO L82 PathProgramCache]: Analyzing trace with hash 94063923, now seen corresponding path program 1 times [2021-08-26 06:02:08,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:08,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558291261] [2021-08-26 06:02:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:08,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:08,584 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:08,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479848979] [2021-08-26 06:02:08,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:08,586 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:08,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:08,605 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 06:02:08,605 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 06:02:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:08,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 32 conjunts are in the unsatisfiable core [2021-08-26 06:02:08,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:09,152 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 06:02:09,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:09,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558291261] [2021-08-26 06:02:09,153 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:09,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479848979] [2021-08-26 06:02:09,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479848979] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:09,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:09,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 06:02:09,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997801770] [2021-08-26 06:02:09,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 06:02:09,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:09,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 06:02:09,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-08-26 06:02:09,154 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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 06:02:09,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:09,410 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions. [2021-08-26 06:02:09,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 06:02:09,410 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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 06:02:09,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:09,411 INFO L225 Difference]: With dead ends: 119 [2021-08-26 06:02:09,411 INFO L226 Difference]: Without dead ends: 117 [2021-08-26 06:02:09,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 203.9ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-08-26 06:02:09,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-26 06:02:09,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2021-08-26 06:02:09,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.3020833333333333) internal successors, (125), 100 states have internal predecessors, (125), 0 states have call successors, (0), 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 06:02:09,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2021-08-26 06:02:09,418 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 22 [2021-08-26 06:02:09,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:09,418 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2021-08-26 06:02:09,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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 06:02:09,418 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2021-08-26 06:02:09,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-26 06:02:09,419 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:09,419 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, 1] [2021-08-26 06:02:09,438 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 06:02:09,633 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 06:02:09,633 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:09,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:09,635 INFO L82 PathProgramCache]: Analyzing trace with hash 62520889, now seen corresponding path program 1 times [2021-08-26 06:02:09,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:09,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84927273] [2021-08-26 06:02:09,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:09,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:09,646 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:09,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034904795] [2021-08-26 06:02:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:09,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:09,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:09,672 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 06:02:09,673 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 06:02:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:09,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 06:02:09,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:09,931 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 06:02:09,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:09,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84927273] [2021-08-26 06:02:09,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:09,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034904795] [2021-08-26 06:02:09,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034904795] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:02:09,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:02:09,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 06:02:09,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601902223] [2021-08-26 06:02:09,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:02:09,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:09,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:02:09,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:02:09,933 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 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 06:02:09,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:09,977 INFO L93 Difference]: Finished difference Result 192 states and 240 transitions. [2021-08-26 06:02:09,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:02:09,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 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 06:02:09,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:09,979 INFO L225 Difference]: With dead ends: 192 [2021-08-26 06:02:09,979 INFO L226 Difference]: Without dead ends: 190 [2021-08-26 06:02:09,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:02:09,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-08-26 06:02:09,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 141. [2021-08-26 06:02:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 136 states have (on average 1.2794117647058822) internal successors, (174), 140 states have internal predecessors, (174), 0 states have call successors, (0), 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 06:02:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 174 transitions. [2021-08-26 06:02:09,990 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 174 transitions. Word has length 23 [2021-08-26 06:02:09,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:09,990 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 174 transitions. [2021-08-26 06:02:09,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 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 06:02:09,990 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 174 transitions. [2021-08-26 06:02:09,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-26 06:02:09,990 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:09,991 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, 1] [2021-08-26 06:02:10,012 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 06:02:10,210 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 06:02:10,210 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:10,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:10,211 INFO L82 PathProgramCache]: Analyzing trace with hash 201274102, now seen corresponding path program 1 times [2021-08-26 06:02:10,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:10,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308057268] [2021-08-26 06:02:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:10,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:10,219 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:10,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265303284] [2021-08-26 06:02:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:10,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:10,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:10,220 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 06:02:10,221 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 06:02:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:10,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 42 conjunts are in the unsatisfiable core [2021-08-26 06:02:10,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:10,873 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 06:02:10,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:10,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308057268] [2021-08-26 06:02:10,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:10,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265303284] [2021-08-26 06:02:10,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265303284] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:10,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:10,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 06:02:10,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406937487] [2021-08-26 06:02:10,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 06:02:10,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:10,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 06:02:10,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-08-26 06:02:10,875 INFO L87 Difference]: Start difference. First operand 141 states and 174 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 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 06:02:11,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:11,130 INFO L93 Difference]: Finished difference Result 157 states and 184 transitions. [2021-08-26 06:02:11,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 06:02:11,130 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-08-26 06:02:11,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:11,131 INFO L225 Difference]: With dead ends: 157 [2021-08-26 06:02:11,131 INFO L226 Difference]: Without dead ends: 155 [2021-08-26 06:02:11,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 220.4ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-08-26 06:02:11,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-08-26 06:02:11,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2021-08-26 06:02:11,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 136 states have (on average 1.2647058823529411) internal successors, (172), 140 states have internal predecessors, (172), 0 states have call successors, (0), 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 06:02:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 172 transitions. [2021-08-26 06:02:11,140 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 172 transitions. Word has length 24 [2021-08-26 06:02:11,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:11,140 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 172 transitions. [2021-08-26 06:02:11,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 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 06:02:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 172 transitions. [2021-08-26 06:02:11,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 06:02:11,141 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:11,141 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, 1, 1, 1] [2021-08-26 06:02:11,181 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 06:02:11,358 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 06:02:11,359 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:11,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:11,359 INFO L82 PathProgramCache]: Analyzing trace with hash 151041369, now seen corresponding path program 1 times [2021-08-26 06:02:11,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:11,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489811247] [2021-08-26 06:02:11,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:11,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:11,368 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:11,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736301146] [2021-08-26 06:02:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:11,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:11,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:11,369 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 06:02:11,370 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 06:02:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:11,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 06:02:11,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:11,756 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 06:02:11,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:11,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489811247] [2021-08-26 06:02:11,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:11,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736301146] [2021-08-26 06:02:11,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736301146] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:11,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:11,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 06:02:11,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066428533] [2021-08-26 06:02:11,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 06:02:11,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:11,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 06:02:11,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-26 06:02:11,758 INFO L87 Difference]: Start difference. First operand 141 states and 172 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 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 06:02:11,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:11,919 INFO L93 Difference]: Finished difference Result 254 states and 297 transitions. [2021-08-26 06:02:11,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 06:02:11,920 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-08-26 06:02:11,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:11,921 INFO L225 Difference]: With dead ends: 254 [2021-08-26 06:02:11,921 INFO L226 Difference]: Without dead ends: 252 [2021-08-26 06:02:11,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 97.8ms TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-08-26 06:02:11,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-08-26 06:02:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 175. [2021-08-26 06:02:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 170 states have (on average 1.2588235294117647) internal successors, (214), 174 states have internal predecessors, (214), 0 states have call successors, (0), 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 06:02:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 214 transitions. [2021-08-26 06:02:11,931 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 214 transitions. Word has length 26 [2021-08-26 06:02:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:11,931 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 214 transitions. [2021-08-26 06:02:11,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 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 06:02:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 214 transitions. [2021-08-26 06:02:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-26 06:02:11,932 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:11,932 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:11,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-26 06:02:12,149 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 06:02:12,149 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:12,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:12,149 INFO L82 PathProgramCache]: Analyzing trace with hash -74821968, now seen corresponding path program 2 times [2021-08-26 06:02:12,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:12,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914471435] [2021-08-26 06:02:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:12,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:12,158 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:12,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723745718] [2021-08-26 06:02:12,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 06:02:12,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:12,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:12,159 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 06:02:12,188 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 06:02:12,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 06:02:12,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 06:02:12,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 06:02:12,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:02:12,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:12,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914471435] [2021-08-26 06:02:12,481 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:12,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723745718] [2021-08-26 06:02:12,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723745718] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:02:12,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:02:12,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 06:02:12,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84605137] [2021-08-26 06:02:12,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 06:02:12,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:12,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 06:02:12,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:02:12,483 INFO L87 Difference]: Start difference. First operand 175 states and 214 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 06:02:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:12,542 INFO L93 Difference]: Finished difference Result 249 states and 298 transitions. [2021-08-26 06:02:12,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 06:02:12,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-08-26 06:02:12,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:12,543 INFO L225 Difference]: With dead ends: 249 [2021-08-26 06:02:12,544 INFO L226 Difference]: Without dead ends: 167 [2021-08-26 06:02:12,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:02:12,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-08-26 06:02:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 93. [2021-08-26 06:02:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 92 states have internal predecessors, (106), 0 states have call successors, (0), 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 06:02:12,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2021-08-26 06:02:12,551 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 27 [2021-08-26 06:02:12,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:12,551 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2021-08-26 06:02:12,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 06:02:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2021-08-26 06:02:12,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-26 06:02:12,552 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:12,552 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:12,597 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 06:02:12,769 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 06:02:12,769 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:12,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:12,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1112899551, now seen corresponding path program 1 times [2021-08-26 06:02:12,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:12,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429422098] [2021-08-26 06:02:12,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:12,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:12,778 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:12,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632277863] [2021-08-26 06:02:12,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:12,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:12,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:12,801 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 06:02:12,801 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 06:02:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:13,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 47 conjunts are in the unsatisfiable core [2021-08-26 06:02:13,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:13,658 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 06:02:13,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:13,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429422098] [2021-08-26 06:02:13,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:13,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632277863] [2021-08-26 06:02:13,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632277863] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:13,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:13,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 06:02:13,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458023443] [2021-08-26 06:02:13,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 06:02:13,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:13,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 06:02:13,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-08-26 06:02:13,661 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:13,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:13,996 INFO L93 Difference]: Finished difference Result 204 states and 230 transitions. [2021-08-26 06:02:13,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 06:02:13,996 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-08-26 06:02:13,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:13,997 INFO L225 Difference]: With dead ends: 204 [2021-08-26 06:02:13,997 INFO L226 Difference]: Without dead ends: 194 [2021-08-26 06:02:13,997 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 201.4ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-08-26 06:02:13,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-08-26 06:02:14,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 110. [2021-08-26 06:02:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 109 states have internal predecessors, (125), 0 states have call successors, (0), 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 06:02:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2021-08-26 06:02:14,005 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 32 [2021-08-26 06:02:14,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:14,006 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2021-08-26 06:02:14,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:14,006 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2021-08-26 06:02:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-26 06:02:14,006 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:14,007 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:14,042 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 06:02:14,224 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 06:02:14,224 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:14,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:14,225 INFO L82 PathProgramCache]: Analyzing trace with hash -986732336, now seen corresponding path program 1 times [2021-08-26 06:02:14,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:14,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906732020] [2021-08-26 06:02:14,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:14,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:14,240 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:14,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160369798] [2021-08-26 06:02:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:14,241 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:14,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:14,241 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 06:02:14,242 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 06:02:14,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:14,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-26 06:02:14,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:02:15,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:15,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906732020] [2021-08-26 06:02:15,105 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:15,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160369798] [2021-08-26 06:02:15,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160369798] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:15,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:15,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-08-26 06:02:15,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807364361] [2021-08-26 06:02:15,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 06:02:15,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:15,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 06:02:15,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-08-26 06:02:15,106 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:15,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:15,522 INFO L93 Difference]: Finished difference Result 232 states and 268 transitions. [2021-08-26 06:02:15,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 06:02:15,523 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-08-26 06:02:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:15,524 INFO L225 Difference]: With dead ends: 232 [2021-08-26 06:02:15,524 INFO L226 Difference]: Without dead ends: 166 [2021-08-26 06:02:15,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 361.3ms TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2021-08-26 06:02:15,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-26 06:02:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2021-08-26 06:02:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 141 states have (on average 1.177304964539007) internal successors, (166), 145 states have internal predecessors, (166), 0 states have call successors, (0), 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 06:02:15,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 166 transitions. [2021-08-26 06:02:15,538 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 166 transitions. Word has length 32 [2021-08-26 06:02:15,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:15,538 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 166 transitions. [2021-08-26 06:02:15,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:15,538 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 166 transitions. [2021-08-26 06:02:15,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 06:02:15,539 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:15,539 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:15,559 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 06:02:15,756 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 06:02:15,757 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:15,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:15,757 INFO L82 PathProgramCache]: Analyzing trace with hash -315127458, now seen corresponding path program 2 times [2021-08-26 06:02:15,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:15,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031138019] [2021-08-26 06:02:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:15,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:15,763 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:15,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854051834] [2021-08-26 06:02:15,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 06:02:15,763 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:15,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:15,773 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 06:02:15,816 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 06:02:16,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 06:02:16,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 06:02:16,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-26 06:02:16,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:16,275 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:02:16,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:16,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031138019] [2021-08-26 06:02:16,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:16,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854051834] [2021-08-26 06:02:16,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854051834] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:16,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:16,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 06:02:16,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100623539] [2021-08-26 06:02:16,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 06:02:16,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:16,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 06:02:16,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 06:02:16,277 INFO L87 Difference]: Start difference. First operand 146 states and 166 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 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 06:02:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:16,494 INFO L93 Difference]: Finished difference Result 326 states and 371 transitions. [2021-08-26 06:02:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 06:02:16,495 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 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 06:02:16,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:16,496 INFO L225 Difference]: With dead ends: 326 [2021-08-26 06:02:16,496 INFO L226 Difference]: Without dead ends: 322 [2021-08-26 06:02:16,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-08-26 06:02:16,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-08-26 06:02:16,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 174. [2021-08-26 06:02:16,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 169 states have (on average 1.2011834319526626) internal successors, (203), 173 states have internal predecessors, (203), 0 states have call successors, (0), 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 06:02:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 203 transitions. [2021-08-26 06:02:16,513 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 203 transitions. Word has length 37 [2021-08-26 06:02:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:16,514 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 203 transitions. [2021-08-26 06:02:16,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 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 06:02:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 203 transitions. [2021-08-26 06:02:16,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-26 06:02:16,515 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:16,515 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:16,533 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 06:02:16,733 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 06:02:16,733 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:16,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:16,734 INFO L82 PathProgramCache]: Analyzing trace with hash -188960243, now seen corresponding path program 1 times [2021-08-26 06:02:16,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:16,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152541920] [2021-08-26 06:02:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:16,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:16,740 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:16,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902319491] [2021-08-26 06:02:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:16,740 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:16,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:16,745 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 06:02:16,746 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 06:02:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:17,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-26 06:02:17,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:17,513 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 06:02:17,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:17,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152541920] [2021-08-26 06:02:17,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:17,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902319491] [2021-08-26 06:02:17,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902319491] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:17,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:17,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-08-26 06:02:17,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255639509] [2021-08-26 06:02:17,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 06:02:17,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:17,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 06:02:17,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-08-26 06:02:17,516 INFO L87 Difference]: Start difference. First operand 174 states and 203 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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 06:02:18,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:18,049 INFO L93 Difference]: Finished difference Result 260 states and 298 transitions. [2021-08-26 06:02:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-08-26 06:02:18,049 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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 06:02:18,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:18,050 INFO L225 Difference]: With dead ends: 260 [2021-08-26 06:02:18,050 INFO L226 Difference]: Without dead ends: 258 [2021-08-26 06:02:18,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 356.9ms TimeCoverageRelationStatistics Valid=219, Invalid=837, Unknown=0, NotChecked=0, Total=1056 [2021-08-26 06:02:18,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-08-26 06:02:18,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 214. [2021-08-26 06:02:18,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 209 states have (on average 1.200956937799043) internal successors, (251), 213 states have internal predecessors, (251), 0 states have call successors, (0), 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 06:02:18,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 251 transitions. [2021-08-26 06:02:18,091 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 251 transitions. Word has length 37 [2021-08-26 06:02:18,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:18,091 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 251 transitions. [2021-08-26 06:02:18,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 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 06:02:18,092 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 251 transitions. [2021-08-26 06:02:18,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-26 06:02:18,097 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:18,097 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:18,124 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 06:02:18,312 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 06:02:18,313 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:18,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:18,313 INFO L82 PathProgramCache]: Analyzing trace with hash 913672398, now seen corresponding path program 1 times [2021-08-26 06:02:18,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:18,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159869401] [2021-08-26 06:02:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:18,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:18,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:18,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698286210] [2021-08-26 06:02:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:18,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:18,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:18,324 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 06:02:18,327 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 06:02:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:18,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-26 06:02:18,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-26 06:02:18,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:18,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159869401] [2021-08-26 06:02:18,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:18,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698286210] [2021-08-26 06:02:18,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698286210] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:02:18,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:02:18,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 06:02:18,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65905636] [2021-08-26 06:02:18,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 06:02:18,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:18,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 06:02:18,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:02:18,832 INFO L87 Difference]: Start difference. First operand 214 states and 251 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:18,878 INFO L93 Difference]: Finished difference Result 363 states and 429 transitions. [2021-08-26 06:02:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 06:02:18,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-08-26 06:02:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:18,879 INFO L225 Difference]: With dead ends: 363 [2021-08-26 06:02:18,880 INFO L226 Difference]: Without dead ends: 226 [2021-08-26 06:02:18,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.3ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 06:02:18,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-08-26 06:02:18,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 204. [2021-08-26 06:02:18,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 0 states have call successors, (0), 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 06:02:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 238 transitions. [2021-08-26 06:02:18,899 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 238 transitions. Word has length 38 [2021-08-26 06:02:18,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:18,899 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 238 transitions. [2021-08-26 06:02:18,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:18,899 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 238 transitions. [2021-08-26 06:02:18,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-26 06:02:18,900 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:18,900 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:18,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-26 06:02:19,117 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 06:02:19,117 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:19,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:19,118 INFO L82 PathProgramCache]: Analyzing trace with hash 820532868, now seen corresponding path program 2 times [2021-08-26 06:02:19,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:19,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501680161] [2021-08-26 06:02:19,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:19,118 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:19,124 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:19,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [205726793] [2021-08-26 06:02:19,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 06:02:19,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:19,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:19,125 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 06:02:19,168 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 06:02:19,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-26 06:02:19,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 06:02:19,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-26 06:02:19,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:19,747 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-26 06:02:19,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:19,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501680161] [2021-08-26 06:02:19,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:19,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205726793] [2021-08-26 06:02:19,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205726793] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:02:19,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:02:19,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 06:02:19,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695548579] [2021-08-26 06:02:19,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:02:19,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:19,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:02:19,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:02:19,748 INFO L87 Difference]: Start difference. First operand 204 states and 238 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:19,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:19,812 INFO L93 Difference]: Finished difference Result 237 states and 275 transitions. [2021-08-26 06:02:19,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 06:02:19,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-08-26 06:02:19,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:19,814 INFO L225 Difference]: With dead ends: 237 [2021-08-26 06:02:19,814 INFO L226 Difference]: Without dead ends: 235 [2021-08-26 06:02:19,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:02:19,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-08-26 06:02:19,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 222. [2021-08-26 06:02:19,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 217 states have (on average 1.1981566820276497) internal successors, (260), 221 states have internal predecessors, (260), 0 states have call successors, (0), 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 06:02:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 260 transitions. [2021-08-26 06:02:19,834 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 260 transitions. Word has length 38 [2021-08-26 06:02:19,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:19,834 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 260 transitions. [2021-08-26 06:02:19,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 260 transitions. [2021-08-26 06:02:19,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-26 06:02:19,835 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:19,835 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:19,852 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 06:02:20,052 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 06:02:20,052 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:20,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:20,053 INFO L82 PathProgramCache]: Analyzing trace with hash 2091903451, now seen corresponding path program 1 times [2021-08-26 06:02:20,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:20,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161616129] [2021-08-26 06:02:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:20,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:20,059 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:20,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1206986944] [2021-08-26 06:02:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:20,059 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:20,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:20,077 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 06:02:20,079 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 06:02:20,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:20,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-26 06:02:20,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:20,773 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-26 06:02:20,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:20,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161616129] [2021-08-26 06:02:20,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:20,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206986944] [2021-08-26 06:02:20,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206986944] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:02:20,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:02:20,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-26 06:02:20,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076294356] [2021-08-26 06:02:20,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 06:02:20,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:20,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 06:02:20,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-26 06:02:20,775 INFO L87 Difference]: Start difference. First operand 222 states and 260 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 06:02:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:20,974 INFO L93 Difference]: Finished difference Result 300 states and 345 transitions. [2021-08-26 06:02:20,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 06:02:20,974 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 06:02:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:20,975 INFO L225 Difference]: With dead ends: 300 [2021-08-26 06:02:20,975 INFO L226 Difference]: Without dead ends: 235 [2021-08-26 06:02:20,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 122.3ms TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-08-26 06:02:20,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-08-26 06:02:21,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 216. [2021-08-26 06:02:21,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 211 states have (on average 1.1895734597156398) internal successors, (251), 215 states have internal predecessors, (251), 0 states have call successors, (0), 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 06:02:21,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 251 transitions. [2021-08-26 06:02:21,012 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 251 transitions. Word has length 39 [2021-08-26 06:02:21,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:21,012 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 251 transitions. [2021-08-26 06:02:21,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 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 06:02:21,012 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 251 transitions. [2021-08-26 06:02:21,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 06:02:21,012 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:21,013 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:21,047 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 06:02:21,231 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 06:02:21,232 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:21,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:21,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1404711062, now seen corresponding path program 1 times [2021-08-26 06:02:21,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:21,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351042786] [2021-08-26 06:02:21,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:21,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:21,239 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:21,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299754731] [2021-08-26 06:02:21,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:21,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:21,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:21,243 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 06:02:21,244 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 06:02:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:21,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 68 conjunts are in the unsatisfiable core [2021-08-26 06:02:21,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:02:23,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:23,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351042786] [2021-08-26 06:02:23,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:23,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299754731] [2021-08-26 06:02:23,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299754731] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:23,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:23,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-08-26 06:02:23,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808472644] [2021-08-26 06:02:23,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-26 06:02:23,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:23,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-26 06:02:23,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-08-26 06:02:23,024 INFO L87 Difference]: Start difference. First operand 216 states and 251 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 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 06:02:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:23,555 INFO L93 Difference]: Finished difference Result 312 states and 363 transitions. [2021-08-26 06:02:23,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-26 06:02:23,555 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 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) Word has length 41 [2021-08-26 06:02:23,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:23,556 INFO L225 Difference]: With dead ends: 312 [2021-08-26 06:02:23,556 INFO L226 Difference]: Without dead ends: 248 [2021-08-26 06:02:23,557 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 450.9ms TimeCoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2021-08-26 06:02:23,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-08-26 06:02:23,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 237. [2021-08-26 06:02:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 232 states have (on average 1.1767241379310345) internal successors, (273), 236 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:23,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 273 transitions. [2021-08-26 06:02:23,579 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 273 transitions. Word has length 41 [2021-08-26 06:02:23,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:23,579 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 273 transitions. [2021-08-26 06:02:23,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 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 06:02:23,580 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 273 transitions. [2021-08-26 06:02:23,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-26 06:02:23,580 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:23,580 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:23,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-08-26 06:02:23,796 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 06:02:23,797 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:23,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:23,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1976752845, now seen corresponding path program 2 times [2021-08-26 06:02:23,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:23,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722203871] [2021-08-26 06:02:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:23,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:23,803 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:23,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585217385] [2021-08-26 06:02:23,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 06:02:23,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:23,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:23,807 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 06:02:23,810 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 06:02:24,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 06:02:24,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 06:02:24,392 WARN L261 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 96 conjunts are in the unsatisfiable core [2021-08-26 06:02:24,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:26,091 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:02:26,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:26,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722203871] [2021-08-26 06:02:26,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:26,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585217385] [2021-08-26 06:02:26,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585217385] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:26,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:26,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-08-26 06:02:26,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713754146] [2021-08-26 06:02:26,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-08-26 06:02:26,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:26,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-08-26 06:02:26,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-08-26 06:02:26,093 INFO L87 Difference]: Start difference. First operand 237 states and 273 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:26,838 INFO L93 Difference]: Finished difference Result 353 states and 405 transitions. [2021-08-26 06:02:26,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-08-26 06:02:26,838 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-26 06:02:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:26,839 INFO L225 Difference]: With dead ends: 353 [2021-08-26 06:02:26,839 INFO L226 Difference]: Without dead ends: 289 [2021-08-26 06:02:26,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 674.3ms TimeCoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2021-08-26 06:02:26,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-08-26 06:02:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 258. [2021-08-26 06:02:26,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 253 states have (on average 1.1699604743083003) internal successors, (296), 257 states have internal predecessors, (296), 0 states have call successors, (0), 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 06:02:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 296 transitions. [2021-08-26 06:02:26,865 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 296 transitions. Word has length 46 [2021-08-26 06:02:26,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:26,865 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 296 transitions. [2021-08-26 06:02:26,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:26,865 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 296 transitions. [2021-08-26 06:02:26,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-26 06:02:26,866 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:26,866 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:26,886 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 06:02:27,084 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 06:02:27,085 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:27,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:27,085 INFO L82 PathProgramCache]: Analyzing trace with hash 2102920060, now seen corresponding path program 2 times [2021-08-26 06:02:27,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:27,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393161486] [2021-08-26 06:02:27,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:27,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:27,101 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:27,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697398798] [2021-08-26 06:02:27,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 06:02:27,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:27,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:27,102 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 06:02:27,103 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 06:02:27,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 06:02:27,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 06:02:27,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 06:02:27,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:02:28,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:28,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393161486] [2021-08-26 06:02:28,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:28,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697398798] [2021-08-26 06:02:28,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697398798] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:28,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:28,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-08-26 06:02:28,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248438712] [2021-08-26 06:02:28,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 06:02:28,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:28,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 06:02:28,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-08-26 06:02:28,211 INFO L87 Difference]: Start difference. First operand 258 states and 296 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:28,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:28,654 INFO L93 Difference]: Finished difference Result 420 states and 483 transitions. [2021-08-26 06:02:28,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-26 06:02:28,654 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-26 06:02:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:28,655 INFO L225 Difference]: With dead ends: 420 [2021-08-26 06:02:28,655 INFO L226 Difference]: Without dead ends: 323 [2021-08-26 06:02:28,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 293.5ms TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2021-08-26 06:02:28,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-08-26 06:02:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 191. [2021-08-26 06:02:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 186 states have (on average 1.1720430107526882) internal successors, (218), 190 states have internal predecessors, (218), 0 states have call successors, (0), 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 06:02:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 218 transitions. [2021-08-26 06:02:28,676 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 218 transitions. Word has length 46 [2021-08-26 06:02:28,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:28,676 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 218 transitions. [2021-08-26 06:02:28,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:28,677 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 218 transitions. [2021-08-26 06:02:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-26 06:02:28,677 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:28,677 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:28,721 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 06:02:28,896 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 06:02:28,897 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:28,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:28,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1437779966, now seen corresponding path program 1 times [2021-08-26 06:02:28,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:28,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029426362] [2021-08-26 06:02:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:28,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:28,905 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:28,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576399461] [2021-08-26 06:02:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:28,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:28,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:28,921 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 06:02:28,938 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 06:02:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:29,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-26 06:02:29,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-08-26 06:02:29,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:29,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029426362] [2021-08-26 06:02:29,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:29,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576399461] [2021-08-26 06:02:29,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576399461] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:29,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:29,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 06:02:29,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265477190] [2021-08-26 06:02:29,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 06:02:29,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:29,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 06:02:29,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-26 06:02:29,971 INFO L87 Difference]: Start difference. First operand 191 states and 218 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:30,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:30,169 INFO L93 Difference]: Finished difference Result 301 states and 345 transitions. [2021-08-26 06:02:30,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 06:02:30,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-08-26 06:02:30,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:30,170 INFO L225 Difference]: With dead ends: 301 [2021-08-26 06:02:30,170 INFO L226 Difference]: Without dead ends: 135 [2021-08-26 06:02:30,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 152.7ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-08-26 06:02:30,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-08-26 06:02:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2021-08-26 06:02:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.1692307692307693) internal successors, (152), 134 states have internal predecessors, (152), 0 states have call successors, (0), 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 06:02:30,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 152 transitions. [2021-08-26 06:02:30,183 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 152 transitions. Word has length 49 [2021-08-26 06:02:30,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:30,184 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 152 transitions. [2021-08-26 06:02:30,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:30,184 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 152 transitions. [2021-08-26 06:02:30,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-26 06:02:30,184 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:30,184 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:30,219 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 06:02:30,403 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 06:02:30,403 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:30,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:30,404 INFO L82 PathProgramCache]: Analyzing trace with hash -692384328, now seen corresponding path program 3 times [2021-08-26 06:02:30,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:30,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952623045] [2021-08-26 06:02:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:30,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:30,415 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:30,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608283445] [2021-08-26 06:02:30,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 06:02:30,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:30,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:30,416 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 06:02:30,417 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 06:02:31,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 06:02:31,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 06:02:31,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 76 conjunts are in the unsatisfiable core [2021-08-26 06:02:31,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-26 06:02:32,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:32,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952623045] [2021-08-26 06:02:32,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:32,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608283445] [2021-08-26 06:02:32,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608283445] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:32,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:32,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-08-26 06:02:32,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4063058] [2021-08-26 06:02:32,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 06:02:32,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:32,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 06:02:32,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-08-26 06:02:32,598 INFO L87 Difference]: Start difference. First operand 135 states and 152 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:33,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:33,346 INFO L93 Difference]: Finished difference Result 203 states and 230 transitions. [2021-08-26 06:02:33,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 06:02:33,346 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-08-26 06:02:33,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:33,347 INFO L225 Difference]: With dead ends: 203 [2021-08-26 06:02:33,347 INFO L226 Difference]: Without dead ends: 195 [2021-08-26 06:02:33,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 514.0ms TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-08-26 06:02:33,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-08-26 06:02:33,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 173. [2021-08-26 06:02:33,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 168 states have (on average 1.1904761904761905) internal successors, (200), 172 states have internal predecessors, (200), 0 states have call successors, (0), 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 06:02:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 200 transitions. [2021-08-26 06:02:33,367 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 200 transitions. Word has length 58 [2021-08-26 06:02:33,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:33,367 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 200 transitions. [2021-08-26 06:02:33,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:02:33,367 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 200 transitions. [2021-08-26 06:02:33,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-26 06:02:33,368 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:02:33,368 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:02:33,386 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 06:02:33,586 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 06:02:33,587 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-08-26 06:02:33,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:02:33,587 INFO L82 PathProgramCache]: Analyzing trace with hash -915075848, now seen corresponding path program 1 times [2021-08-26 06:02:33,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:02:33,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223286599] [2021-08-26 06:02:33,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:33,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:02:33,594 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:02:33,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833759379] [2021-08-26 06:02:33,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:02:33,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:02:33,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:02:33,597 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 06:02:33,633 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 06:02:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:02:34,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 06:02:34,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:02:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 46 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-26 06:02:34,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:02:34,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223286599] [2021-08-26 06:02:34,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:02:34,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833759379] [2021-08-26 06:02:34,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833759379] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:02:34,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:02:34,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 06:02:34,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929166241] [2021-08-26 06:02:34,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 06:02:34,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:02:34,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 06:02:34,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-08-26 06:02:34,886 INFO L87 Difference]: Start difference. First operand 173 states and 200 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 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 06:02:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:02:35,092 INFO L93 Difference]: Finished difference Result 173 states and 200 transitions. [2021-08-26 06:02:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 06:02:35,093 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-08-26 06:02:35,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:02:35,093 INFO L225 Difference]: With dead ends: 173 [2021-08-26 06:02:35,093 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 06:02:35,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 205.7ms TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-08-26 06:02:35,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 06:02:35,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 06:02:35,094 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 06:02:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 06:02:35,094 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-08-26 06:02:35,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:02:35,094 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 06:02:35,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 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 06:02:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 06:02:35,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 06:02:35,097 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:02:35,097 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:02:35,097 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:02:35,097 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:02:35,097 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:02:35,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-08-26 06:02:35,317 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 06:02:35,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 06:02:35,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:02:35,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:02:35,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:02:35,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:02:35,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:02:36,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:02:36,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:02:36,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:02:36,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:02:41,613 INFO L853 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse3 (<= 1 ULTIMATE.start_main_~b~0)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse4 (= ULTIMATE.start_main_~r~0 0)) (.cse11 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse6 (<= ULTIMATE.start_main_~y~0 2)) (.cse14 (<= 1 ULTIMATE.start_main_~y~0)) (.cse13 (+ (* 2 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~q~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse12 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse15 (<= 0 ULTIMATE.start_main_~b~0)) (.cse7 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse8 (= ULTIMATE.start_main_~p~0 0)) (.cse2 (<= ULTIMATE.start_main_~x~0 2)) (.cse9 (= ULTIMATE.start_main_~r~0 1)) (.cse10 (= ULTIMATE.start_main_~q~0 1)) (.cse5 (<= 1 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~b~0 2) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse3 (= ULTIMATE.start_main_~q~0 0) .cse4 (= ULTIMATE.start_main_~s~0 1) .cse5 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (= ULTIMATE.start_main_~s~0 0) .cse6 .cse7 (< ULTIMATE.start_main_~c~0 2) .cse8 (<= 1 ULTIMATE.start_main_~c~0) .cse3 (< ULTIMATE.start_main_~b~0 2) .cse9 .cse10 .cse5 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (and .cse11 .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse12 .cse6 (= .cse13 0) (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~b~0 (* 2 ULTIMATE.start_main_~x~0))) (= (+ ULTIMATE.start_main_~s~0 (* 2 ULTIMATE.start_main_~r~0)) 1) .cse14 .cse4 .cse5) (and .cse11 .cse0 .cse12 .cse15 .cse6 .cse7 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 (* 2 ULTIMATE.start_main_~a~0))) .cse8 .cse2 .cse14 (= (+ ULTIMATE.start_main_~s~0 2) 0) .cse9 .cse5 (= .cse13 1)) (and .cse0 .cse12 .cse15 .cse7 (< (* 2 ULTIMATE.start_main_~b~0) 2) .cse8 (= (+ ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~r~0) 0) (<= 0 ULTIMATE.start_main_~c~0) .cse2 (< (* 2 ULTIMATE.start_main_~c~0) 2) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) .cse9 .cse10 .cse5))) [2021-08-26 06:02:41,613 INFO L857 garLoopResultBuilder]: For program point L35-3(lines 35 73) no Hoare annotation was computed. [2021-08-26 06:02:41,614 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 06:02:41,614 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-08-26 06:02:41,614 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse2 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0)) (.cse3 (= ULTIMATE.start_main_~s~0 0)) (.cse4 (<= ULTIMATE.start_main_~y~0 2)) (.cse5 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse6 (= ULTIMATE.start_main_~p~0 0)) (.cse9 (<= 1 ULTIMATE.start_main_~b~0)) (.cse11 (= ULTIMATE.start_main_~r~0 1)) (.cse12 (= ULTIMATE.start_main_~q~0 1)) (.cse14 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= ULTIMATE.start_main_~k~0 0)) (.cse21 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse22 (= ULTIMATE.start_main_~p~0 1)) (.cse23 (<= ULTIMATE.start_main_~x~0 2)) (.cse24 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse25 (<= 1 ULTIMATE.start_main_~y~0)) (.cse26 (= ULTIMATE.start_main_~q~0 0)) (.cse27 (= ULTIMATE.start_main_~r~0 0)) (.cse28 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse29 (= ULTIMATE.start_main_~s~0 1)) (.cse30 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse20 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse16 (* 2 ULTIMATE.start_main_~b~0))) (let ((.cse8 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse10 (= ULTIMATE.start_main_~d~0 1)) (.cse15 (= ULTIMATE.start_main_~v~0 .cse16)) (.cse17 (= ULTIMATE.start_main_~d~0 2)) (.cse7 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse18 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse13 (<= 1 ULTIMATE.start_main_~x~0)) (.cse19 (or (and .cse0 .cse1 .cse2 .cse3 .cse21 .cse4 .cse5 .cse6 .cse9 .cse11 .cse12 .cse14) (and .cse0 .cse1 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse27 .cse28 .cse29 .cse30 .cse20)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0)) (and .cse15 (<= .cse16 ULTIMATE.start_main_~c~0) .cse17 .cse7 .cse18 .cse19 .cse20) (and .cse0 .cse1 .cse21 .cse22 .cse23 .cse8 .cse24 .cse25 .cse26 .cse18 .cse27 .cse10 .cse28 .cse29 .cse30 .cse20) (and .cse15 .cse17 .cse7 .cse18 .cse12 .cse13 .cse19)))) [2021-08-26 06:02:41,614 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-08-26 06:02:41,614 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse9 (= ULTIMATE.start_main_~p~0 1)) (.cse10 (<= ULTIMATE.start_main_~x~0 2)) (.cse12 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse13 (<= 1 ULTIMATE.start_main_~y~0)) (.cse14 (= ULTIMATE.start_main_~q~0 0)) (.cse16 (= ULTIMATE.start_main_~r~0 0)) (.cse18 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse19 (= ULTIMATE.start_main_~s~0 1)) (.cse20 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (= ULTIMATE.start_main_~k~0 0)) (.cse21 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0)) (.cse22 (= ULTIMATE.start_main_~s~0 0)) (.cse8 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse24 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse25 (= ULTIMATE.start_main_~p~0 0)) (.cse26 (= ULTIMATE.start_main_~r~0 1)) (.cse27 (= ULTIMATE.start_main_~q~0 1)) (.cse28 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse1 (* 2 ULTIMATE.start_main_~b~0))) (let ((.cse11 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse17 (= ULTIMATE.start_main_~d~0 1)) (.cse0 (= ULTIMATE.start_main_~v~0 .cse1)) (.cse23 (<= ULTIMATE.start_main_~y~0 2)) (.cse2 (= ULTIMATE.start_main_~d~0 2)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse15 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse4 (or (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse12 .cse13 .cse14 .cse16 .cse18 .cse19 .cse20 .cse5) (and .cse6 .cse8 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0)) .cse9 .cse10 .cse12 .cse13 .cse14 .cse16 .cse18 .cse19 (= ULTIMATE.start_main_~k~0 1) .cse20 .cse5) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse6 .cse7 .cse21 .cse22 .cse8 .cse24 .cse25 .cse26 .cse27 .cse28)))) (or (and .cse0 (<= .cse1 ULTIMATE.start_main_~c~0) .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse5) (and .cse6 .cse7 .cse21 .cse22 .cse23 .cse24 .cse25 .cse3 .cse11 (<= 1 ULTIMATE.start_main_~b~0) .cse15 .cse17 .cse26 .cse27 (<= 1 ULTIMATE.start_main_~x~0) .cse28) (and .cse0 .cse23 .cse2 .cse3 .cse15 .cse27 .cse4 (<= 1 (div ULTIMATE.start_main_~v~0 2)))))) [2021-08-26 06:02:41,614 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-08-26 06:02:41,615 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2021-08-26 06:02:41,615 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: (let ((.cse3 (* 2 ULTIMATE.start_main_~b~0))) (let ((.cse5 (= ULTIMATE.start_main_~p~0 1)) (.cse6 (<= ULTIMATE.start_main_~x~0 2)) (.cse8 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse9 (<= 1 ULTIMATE.start_main_~y~0)) (.cse10 (= ULTIMATE.start_main_~q~0 0)) (.cse11 (= ULTIMATE.start_main_~r~0 0)) (.cse12 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse13 (= ULTIMATE.start_main_~s~0 1)) (.cse14 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse15 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_main_~v~0 .cse3)) (.cse4 (= ULTIMATE.start_main_~d~0 2)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= ULTIMATE.start_main_~k~0 0)) (.cse19 (= ULTIMATE.start_main_~s~0 0)) (.cse20 (<= ULTIMATE.start_main_~y~0 2)) (.cse21 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse22 (= ULTIMATE.start_main_~p~0 0)) (.cse7 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse16 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse17 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse18 (= ULTIMATE.start_main_~d~0 1)) (.cse23 (= ULTIMATE.start_main_~r~0 1)) (.cse24 (= ULTIMATE.start_main_~q~0 1)) (.cse25 (<= 1 ULTIMATE.start_main_~x~0)) (.cse26 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0))) (or (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse0 .cse1 .cse2 (<= .cse3 ULTIMATE.start_main_~c~0) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse5 .cse6 .cse16 .cse8 .cse9 .cse10 .cse17 .cse11 .cse18 .cse12 .cse13 .cse14 .cse15) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse0 .cse1 .cse2 .cse19 .cse20 .cse21 .cse22 .cse4 .cse7 .cse17 .cse23 .cse24 .cse25 .cse26) (and .cse0 .cse1 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse19 .cse20 .cse21 .cse22 .cse7 .cse16 (<= 1 ULTIMATE.start_main_~b~0) .cse17 .cse18 .cse23 .cse24 .cse25 .cse26)))) [2021-08-26 06:02:41,615 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-08-26 06:02:41,615 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 55 56) the Hoare annotation is: (let ((.cse7 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse9 (= ULTIMATE.start_main_~p~0 1)) (.cse10 (<= ULTIMATE.start_main_~x~0 2)) (.cse11 (<= 1 ULTIMATE.start_main_~y~0)) (.cse12 (= ULTIMATE.start_main_~q~0 0)) (.cse14 (= ULTIMATE.start_main_~r~0 0)) (.cse15 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse16 (= ULTIMATE.start_main_~s~0 1)) (.cse17 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse20 (= ULTIMATE.start_main_~s~0 0)) (.cse21 (<= ULTIMATE.start_main_~y~0 2)) (.cse22 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse23 (= ULTIMATE.start_main_~p~0 0)) (.cse24 (= ULTIMATE.start_main_~r~0 1)) (.cse4 (= ULTIMATE.start_main_~q~0 1)) (.cse25 (<= 1 ULTIMATE.start_main_~x~0)) (.cse26 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0))) (let ((.cse18 (* 2 ULTIMATE.start_main_~b~0)) (.cse19 (or (and .cse6 .cse7 .cse9 .cse10 .cse11 .cse12 .cse14 .cse15 .cse16 .cse17) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse6 .cse20 .cse21 .cse22 .cse23 (<= 1 ULTIMATE.start_main_~c~0) .cse24 .cse4 .cse25 .cse26))) (.cse8 (= ULTIMATE.start_main_~k~0 0)) (.cse13 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0))) (let ((.cse3 (or (and .cse19 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0)) (= ULTIMATE.start_main_~k~0 1)) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17) (and .cse6 .cse8 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse20 .cse21 .cse22 .cse23 (<= 1 ULTIMATE.start_main_~b~0) .cse13 .cse24 .cse4 .cse25 .cse26))) (.cse5 (= ULTIMATE.start_main_~d~0 1)) (.cse0 (= ULTIMATE.start_main_~v~0 .cse18)) (.cse1 (= ULTIMATE.start_main_~d~0 2)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse2 .cse3 .cse5 (<= 1 ULTIMATE.start_main_~v~0) .cse4 (< ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~c~0)) (and .cse6 .cse7 .cse8 .cse9 .cse10 .cse2 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0) .cse11 .cse12 .cse13 .cse14 .cse5 .cse15 .cse16 .cse17) (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse8 .cse0 (<= .cse18 ULTIMATE.start_main_~c~0) .cse19 .cse1 .cse2))))) [2021-08-26 06:02:41,616 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-08-26 06:02:41,616 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 06:02:41,616 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 06:02:41,616 INFO L860 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: true [2021-08-26 06:02:41,616 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 06:02:41,616 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-08-26 06:02:41,616 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-08-26 06:02:41,616 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-08-26 06:02:41,616 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-08-26 06:02:41,617 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-08-26 06:02:41,617 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 06:02:41,617 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-26 06:02:41,617 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-08-26 06:02:41,617 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-08-26 06:02:41,617 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-08-26 06:02:41,617 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 06:02:41,617 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 06:02:41,618 INFO L853 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse7 (= ULTIMATE.start_main_~p~0 1)) (.cse8 (<= ULTIMATE.start_main_~x~0 2)) (.cse10 (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse11 (<= 1 ULTIMATE.start_main_~y~0)) (.cse12 (= ULTIMATE.start_main_~q~0 0)) (.cse14 (= ULTIMATE.start_main_~r~0 0)) (.cse16 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (.cse17 (= ULTIMATE.start_main_~s~0 1)) (.cse18 (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (= ULTIMATE.start_main_~k~0 0)) (.cse19 (= ULTIMATE.start_main_~s~0 0)) (.cse20 (<= ULTIMATE.start_main_~y~0 2)) (.cse21 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse22 (= ULTIMATE.start_main_~p~0 0)) (.cse23 (<= 1 ULTIMATE.start_main_~b~0)) (.cse13 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse24 (= ULTIMATE.start_main_~r~0 1)) (.cse25 (= ULTIMATE.start_main_~q~0 1)) (.cse26 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse1 (* 2 ULTIMATE.start_main_~b~0))) (let ((.cse9 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~v~0)) (.cse15 (= ULTIMATE.start_main_~d~0 1)) (.cse0 (= ULTIMATE.start_main_~v~0 .cse1)) (.cse2 (= ULTIMATE.start_main_~d~0 2)) (.cse3 (or (and (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~x~0) .cse5 .cse6 .cse7 .cse8 .cse10 .cse11 .cse12 .cse14 .cse16 .cse17 .cse18 .cse4) (and .cse5 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0)) .cse7 .cse8 .cse10 .cse11 .cse12 .cse14 .cse16 .cse17 (= ULTIMATE.start_main_~k~0 1) .cse18 .cse4) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse5 .cse6 .cse19 .cse20 .cse21 .cse22 .cse23 .cse13 .cse24 .cse25 .cse26)))) (or (and .cse0 (<= .cse1 ULTIMATE.start_main_~c~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse4) (and .cse5 .cse6 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse19 .cse20 .cse21 .cse22 .cse9 .cse23 .cse13 .cse15 .cse24 .cse25 (<= 1 ULTIMATE.start_main_~x~0) .cse26) (and .cse0 .cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 .cse25)))) [2021-08-26 06:02:41,618 INFO L857 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2021-08-26 06:02:41,618 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-26 06:02:41,618 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-08-26 06:02:41,618 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-08-26 06:02:41,618 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-08-26 06:02:41,618 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 06:02:41,618 INFO L860 garLoopResultBuilder]: At program point L75(lines 18 76) the Hoare annotation is: true [2021-08-26 06:02:41,619 INFO L853 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse12 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse0 (<= ULTIMATE.start_main_~x~0 2))) (let ((.cse25 (= ULTIMATE.start_main_~s~0 0)) (.cse14 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (.cse15 (= ULTIMATE.start_main_~p~0 0)) (.cse16 (= ULTIMATE.start_main_~r~0 1)) (.cse10 (= ULTIMATE.start_main_~q~0 1)) (.cse26 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0)) (.cse20 (let ((.cse27 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (.cse28 (= ULTIMATE.start_main_~p~0 1)) (.cse29 (<= 1 ULTIMATE.start_main_~y~0)) (.cse30 (= ULTIMATE.start_main_~r~0 0))) (or (and .cse12 .cse27 .cse28 .cse0 .cse29 (<= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse30) (and .cse12 .cse27 .cse28 .cse0 .cse29 .cse30 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0))))) (.cse13 (<= ULTIMATE.start_main_~y~0 2)) (.cse21 (= ULTIMATE.start_main_~q~0 0)) (.cse23 (= ULTIMATE.start_main_~s~0 1)) (.cse17 (<= 1 ULTIMATE.start_main_~x~0)) (.cse24 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (let ((.cse11 (and .cse20 .cse13 .cse21 .cse23 .cse17 .cse24)) (.cse18 (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0) .cse12 .cse25 .cse13 .cse14 .cse15 .cse16 .cse10 .cse17 .cse26)) (.cse7 (<= 0 ULTIMATE.start_main_~c~0)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (= (* ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~v~0)) (.cse19 (< (* 2 ULTIMATE.start_main_~c~0) 2)) (.cse5 (= ULTIMATE.start_main_~d~0 1)) (.cse22 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0))) (or (and .cse0 (let ((.cse1 (* 2 ULTIMATE.start_main_~b~0))) (let ((.cse6 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse8 (+ ULTIMATE.start_main_~c~0 .cse1)) (.cse9 (= ULTIMATE.start_main_~k~0 2)) (.cse2 (or .cse11 (and (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse12 .cse13 .cse14 .cse15 (= (+ ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~r~0) 0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) .cse16 .cse10 .cse17) .cse18))) (or (and (or (and (= ULTIMATE.start_main_~v~0 .cse1) (= ULTIMATE.start_main_~d~0 2) .cse2) (and .cse3 .cse4 .cse2 .cse5)) .cse6 .cse7 (= ULTIMATE.start_main_~x~0 .cse8) .cse9) (and .cse6 (= ULTIMATE.start_main_~y~0 .cse8) .cse9 .cse2 .cse10 (<= 1 (div ULTIMATE.start_main_~v~0 2)))))) .cse19) (and .cse20 (= ULTIMATE.start_main_~k~0 0) (<= ULTIMATE.start_main_~b~0 2) .cse21 .cse22 .cse23 .cse17 .cse24) (and (or .cse11 .cse18) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0)) .cse7 .cse3 .cse4 .cse19 .cse5 (= ULTIMATE.start_main_~k~0 1) .cse24) (and .cse12 .cse25 .cse13 .cse14 .cse15 (<= 1 ULTIMATE.start_main_~b~0) .cse22 (< ULTIMATE.start_main_~b~0 2) .cse16 .cse10 .cse17 .cse26 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) ULTIMATE.start_main_~y~0)))))) [2021-08-26 06:02:41,619 INFO L857 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2021-08-26 06:02:41,619 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 06:02:41,619 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2021-08-26 06:02:41,622 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:02:41,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:02:41 BoogieIcfgContainer [2021-08-26 06:02:41,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:02:41,670 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:02:41,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:02:41,671 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:02:41,671 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:02:03" (3/4) ... [2021-08-26 06:02:41,673 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 06:02:41,683 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-08-26 06:02:41,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 06:02:41,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 06:02:41,684 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 06:02:41,718 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 06:02:41,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:02:41,719 INFO L168 Benchmark]: Toolchain (without parser) took 38638.38 ms. Allocated memory was 60.8 MB in the beginning and 597.7 MB in the end (delta: 536.9 MB). Free memory was 39.9 MB in the beginning and 411.8 MB in the end (delta: -371.9 MB). Peak memory consumption was 163.3 MB. Max. memory is 16.1 GB. [2021-08-26 06:02:41,720 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:02:41,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.72 ms. Allocated memory is still 60.8 MB. Free memory was 39.7 MB in the beginning and 45.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-26 06:02:41,720 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.60 ms. Allocated memory is still 60.8 MB. Free memory was 45.2 MB in the beginning and 43.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:02:41,721 INFO L168 Benchmark]: Boogie Preprocessor took 27.95 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 42.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:02:41,721 INFO L168 Benchmark]: RCFGBuilder took 409.26 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 42.2 MB in the beginning and 60.7 MB in the end (delta: -18.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:02:41,721 INFO L168 Benchmark]: TraceAbstraction took 37956.64 ms. Allocated memory was 79.7 MB in the beginning and 597.7 MB in the end (delta: 518.0 MB). Free memory was 60.1 MB in the beginning and 417.1 MB in the end (delta: -357.0 MB). Peak memory consumption was 379.0 MB. Max. memory is 16.1 GB. [2021-08-26 06:02:41,721 INFO L168 Benchmark]: Witness Printer took 48.02 ms. Allocated memory is still 597.7 MB. Free memory was 417.1 MB in the beginning and 411.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 06:02:41,723 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 60.8 MB. Free memory was 43.4 MB in the beginning and 43.3 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 162.72 ms. Allocated memory is still 60.8 MB. Free memory was 39.7 MB in the beginning and 45.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.60 ms. Allocated memory is still 60.8 MB. Free memory was 45.2 MB in the beginning and 43.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.95 ms. Allocated memory is still 60.8 MB. Free memory was 43.5 MB in the beginning and 42.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 409.26 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 42.2 MB in the beginning and 60.7 MB in the end (delta: -18.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 37956.64 ms. Allocated memory was 79.7 MB in the beginning and 597.7 MB in the end (delta: 518.0 MB). Free memory was 60.1 MB in the beginning and 417.1 MB in the end (delta: -357.0 MB). Peak memory consumption was 379.0 MB. Max. memory is 16.1 GB. * Witness Printer took 48.02 ms. Allocated memory is still 597.7 MB. Free memory was 417.1 MB in the beginning and 411.8 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 37863.5ms, OverallIterations: 24, TraceHistogramMax: 5, EmptinessCheckTime: 22.6ms, AutomataDifference: 6768.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6295.3ms, InitialAbstractionConstructionTime: 6.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 833 SDtfs, 3165 SDslu, 3325 SDs, 0 SdLazy, 4323 SolverSat, 517 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2366.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 927 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 347 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 5042.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=258occurred in iteration=20, InterpolantAutomatonStates: 286, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 351.5ms AutomataMinimizationTime, 24 MinimizatonAttempts, 915 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 51 NumberOfFragments, 2670 HoareAnnotationTreeSize, 9 FomulaSimplifications, 432681 FormulaSimplificationTreeSizeReduction, 1087.8ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 91743 FormulaSimplificationTreeSizeReductionInter, 5197.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 161.3ms SsaConstructionTime, 434.3ms SatisfiabilityAnalysisTime, 10206.8ms InterpolantComputationTime, 783 NumberOfCodeBlocks, 745 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 759 ConstructedInterpolants, 0 QuantifiedInterpolants, 8070 SizeOfPredicates, 247 NumberOfNonLiveVariables, 3131 ConjunctsInSsa, 608 ConjunctsInUnsatCore, 24 InterpolantComputations, 10 PerfectInterpolantSequences, 199/324 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((v == 2 * b && 2 * b <= c) && d == 2) && 1 == cond) && (((((((((((((((c == x && cond == 1) && k == 0) && 1 <= cond) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y) || (((((((((((((cond == 1 && 1 <= cond) && x == c + b) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && k == 1) && x <= a) && b == y)) || ((((((((((b == x && cond == 1) && k == 0) && b < c) && s == 0) && 1 <= cond) && a == y) && p == 0) && r == 1) && q == 1) && x < a))) && b == y) || (((((((((((((((cond == 1 && k == 0) && 1 <= cond) && p == 1) && x <= 2) && b == v) && a <= x) && 1 <= y) && q == 0) && c == a) && r == 0) && d == 1) && y <= a) && s == 1) && x <= a) && b == y)) || (((((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && y <= 2) && a == y) && p == 0) && 1 == cond) && b == v) && 1 <= b) && c == a) && d == 1) && r == 1) && q == 1) && 1 <= x) && x < a)) || (((((((v == 2 * b && y <= 2) && d == 2) && 1 == cond) && c == a) && q == 1) && (((((((((((((((c == x && cond == 1) && k == 0) && 1 <= cond) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y) || (((((((((((((cond == 1 && 1 <= cond) && x == c + b) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && k == 1) && x <= a) && b == y)) || ((((((((((b == x && cond == 1) && k == 0) && b < c) && s == 0) && 1 <= cond) && a == y) && p == 0) && r == 1) && q == 1) && x < a))) && 1 <= v / 2) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((x <= 2 && ((((((((v == 2 * b && d == 2) && ((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && c <= a) && r == 0) || ((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && r == 0) && y <= a)) && y <= 2) && q == 0) && s == 1) && 1 <= x) && b == y) || (((((((((b < a && cond == 1) && y <= 2) && a == y) && p == 0) && s + r == 0) && x == b + a) && r == 1) && q == 1) && 1 <= x)) || (((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && r == 1) && q == 1) && 1 <= x) && x < a))) || (((1 == cond && d * b == v) && ((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && c <= a) && r == 0) || ((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && r == 0) && y <= a)) && y <= 2) && q == 0) && s == 1) && 1 <= x) && b == y) || (((((((((b < a && cond == 1) && y <= 2) && a == y) && p == 0) && s + r == 0) && x == b + a) && r == 1) && q == 1) && 1 <= x)) || (((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && r == 1) && q == 1) && 1 <= x) && x < a))) && d == 1)) && 1 <= cond) && 0 <= c) && x == c + 2 * b) && k == 2) || (((((1 <= cond && y == c + 2 * b) && k == 2) && ((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && c <= a) && r == 0) || ((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && r == 0) && y <= a)) && y <= 2) && q == 0) && s == 1) && 1 <= x) && b == y) || (((((((((b < a && cond == 1) && y <= 2) && a == y) && p == 0) && s + r == 0) && x == b + a) && r == 1) && q == 1) && 1 <= x)) || (((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && r == 1) && q == 1) && 1 <= x) && x < a))) && q == 1) && 1 <= v / 2))) && 2 * c < 2) || ((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && c <= a) && r == 0) || ((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && r == 0) && y <= a)) && k == 0) && b <= 2) && q == 0) && c == a) && s == 1) && 1 <= x) && b == y)) || (((((((((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && c <= a) && r == 0) || ((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && r == 0) && y <= a)) && y <= 2) && q == 0) && s == 1) && 1 <= x) && b == y) || (((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && r == 1) && q == 1) && 1 <= x) && x < a)) && x == c + b) && 0 <= c) && 1 == cond) && d * b == v) && 2 * c < 2) && d == 1) && k == 1) && b == y)) || ((((((((((((cond == 1 && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= b) && c == a) && b < 2) && r == 1) && q == 1) && 1 <= x) && x < a) && c + b * k == y) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((v == 2 * b && 2 * b <= c) && 1 <= cond) && d == 2) && ((((((((((((((c == x && cond == 1) && k == 0) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y) || ((((((((((((cond == 1 && x == c + b) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && k == 1) && x <= a) && b == y)) || (((((((((((b == x && cond == 1) && k == 0) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= b) && c == a) && r == 1) && q == 1) && x < a))) && b == y) || ((((((((((((((cond == 1 && k == 0) && p == 1) && x <= 2) && b == v) && a <= x) && 1 <= y) && q == 0) && c == a) && r == 0) && d == 1) && y <= a) && s == 1) && x <= a) && b == y)) || ((((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && y <= 2) && a == y) && p == 0) && b == v) && 1 <= b) && c == a) && d == 1) && r == 1) && q == 1) && 1 <= x) && x < a)) || ((((v == 2 * b && d == 2) && 1 == cond) && ((((((((((((((c == x && cond == 1) && k == 0) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y) || ((((((((((((cond == 1 && x == c + b) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && k == 1) && x <= a) && b == y)) || (((((((((((b == x && cond == 1) && k == 0) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= b) && c == a) && r == 1) && q == 1) && x < a))) && q == 1) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((((((((c == x && cond == 1) && k == 0) && v == 2 * b) && 2 * b <= c) && d == 2) && p == 1) && x <= 2) && 1 == cond) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y) || (((((((((((((((cond == 1 && k == 0) && 1 <= cond) && p == 1) && x <= 2) && b == v) && a <= x) && 1 <= y) && q == 0) && c == a) && r == 0) && d == 1) && y <= a) && s == 1) && x <= a) && b == y)) || ((((((((((((((b == x && cond == 1) && k == 0) && v == 2 * b) && s == 0) && y <= 2) && a == y) && p == 0) && d == 2) && 1 == cond) && c == a) && r == 1) && q == 1) && 1 <= x) && x < a)) || (((((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && y <= 2) && a == y) && p == 0) && 1 == cond) && b == v) && 1 <= b) && c == a) && d == 1) && r == 1) && q == 1) && 1 <= x) && x < a) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((cond == 1 && p == 1) && x <= 2) && b <= 2) && a <= x) && 1 <= b) && q == 0) && r == 0) && s == 1) && 1 <= x) && x <= a) && b == y) || ((((((((((((cond == 1 && s == 0) && y <= 2) && a == y) && c < 2) && p == 0) && 1 <= c) && 1 <= b) && b < 2) && r == 1) && q == 1) && 1 <= x) && x < a)) || (((((((((((((b < a && cond == 1) && a == x) && 1 <= cond) && y <= 2) && 2 * p + q == 0) && x < y) && p == 1) && x <= 2) && y == b + 2 * x) && s + 2 * r == 1) && 1 <= y) && r == 0) && 1 <= x)) || (((((((((((((b < a && cond == 1) && 1 <= cond) && 0 <= b) && y <= 2) && a == y) && x == b + 2 * a) && p == 0) && x <= 2) && 1 <= y) && s + 2 == 0) && r == 1) && 1 <= x) && 2 * p + q == 1)) || (((((((((((((cond == 1 && 1 <= cond) && 0 <= b) && a == y) && 2 * b < 2) && p == 0) && s + r == 0) && 0 <= c) && x <= 2) && 2 * c < 2) && x == b + a) && r == 1) && q == 1) && 1 <= x) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((((((v == 2 * b && d == 2) && 1 == cond) && ((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && b == y) || ((((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= c) && r == 1) && q == 1) && 1 <= x) && x < a)) && x == c + b) && k == 1) || (((((((((((cond == 1 && a == x) && k == 0) && p == 1) && x <= 2) && 1 <= y) && q == 0) && c == a) && r == 0) && y <= a) && s == 1) && b == y)) || ((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= b) && c == a) && r == 1) && q == 1) && 1 <= x) && x < a))) && q == 1) || (((((1 == cond && ((((((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && b == y) || ((((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= c) && r == 1) && q == 1) && 1 <= x) && x < a)) && x == c + b) && k == 1) || (((((((((((cond == 1 && a == x) && k == 0) && p == 1) && x <= 2) && 1 <= y) && q == 0) && c == a) && r == 0) && y <= a) && s == 1) && b == y)) || ((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= b) && c == a) && r == 1) && q == 1) && 1 <= x) && x < a))) && d == 1) && 1 <= v) && q == 1) && v < c)) || ((((((((((((((cond == 1 && a == x) && k == 0) && p == 1) && x <= 2) && 1 == cond) && d * b == v) && 1 <= y) && q == 0) && c == a) && r == 0) && d == 1) && y <= a) && s == 1) && b == y)) || ((((((c == x && k == 0) && v == 2 * b) && 2 * b <= c) && ((((((((((cond == 1 && a == x) && p == 1) && x <= 2) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && b == y) || ((((((((((b == x && cond == 1) && s == 0) && y <= 2) && a == y) && p == 0) && 1 <= c) && r == 1) && q == 1) && 1 <= x) && x < a))) && d == 2) && 1 == cond) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && y <= 2) && a == y) && p == 0) && 1 == cond) && b == v) && 1 <= b) && d == 1) && r == 1) && q == 1) && 1 <= x) && x < a) && c + b * k == y) || ((((((v == 2 * b && 2 * b <= c) && d == 2) && 1 == cond) && c == a) && ((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && 1 <= cond) && y <= 2) && a == y) && p == 0) && 1 <= b) && r == 1) && q == 1) && x < a) || ((((((((((((cond == 1 && k == 0) && 1 <= cond) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y))) && b == y)) || (((((((((((((((cond == 1 && k == 0) && 1 <= cond) && p == 1) && x <= 2) && b == v) && a <= x) && 1 <= y) && q == 0) && c == a) && r == 0) && d == 1) && y <= a) && s == 1) && x <= a) && b == y)) || ((((((v == 2 * b && d == 2) && 1 == cond) && c == a) && q == 1) && 1 <= x) && ((((((((((((cond == 1 && k == 0) && b < c) && s == 0) && 1 <= cond) && y <= 2) && a == y) && p == 0) && 1 <= b) && r == 1) && q == 1) && x < a) || ((((((((((((cond == 1 && k == 0) && 1 <= cond) && p == 1) && x <= 2) && a <= x) && 1 <= y) && q == 0) && r == 0) && y <= a) && s == 1) && x <= a) && b == y))) RESULT: Ultimate proved your program to be correct! [2021-08-26 06:02:41,757 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...