./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/egcd2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/egcd2-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 18c4bd9ccce67fd7e2b8132eb9e5112bf2af351c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 04:47:00,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 04:47:00,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 04:47:00,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 04:47:00,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 04:47:00,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 04:47:00,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 04:47:00,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 04:47:00,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 04:47:00,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 04:47:00,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 04:47:00,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 04:47:00,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 04:47:00,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 04:47:00,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 04:47:00,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 04:47:00,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 04:47:00,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 04:47:00,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 04:47:00,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 04:47:00,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 04:47:00,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 04:47:00,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 04:47:00,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 04:47:00,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 04:47:00,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 04:47:00,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 04:47:00,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 04:47:00,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 04:47:00,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 04:47:00,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 04:47:00,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 04:47:00,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 04:47:00,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 04:47:00,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 04:47:00,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 04:47:00,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 04:47:00,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 04:47:00,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 04:47:00,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 04:47:00,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 04:47:00,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 04:47:01,031 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 04:47:01,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 04:47:01,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 04:47:01,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 04:47:01,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 04:47:01,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 04:47:01,034 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 04:47:01,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 04:47:01,034 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 04:47:01,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 04:47:01,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 04:47:01,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 04:47:01,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 04:47:01,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 04:47:01,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 04:47:01,035 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 04:47:01,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 04:47:01,035 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 04:47:01,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 04:47:01,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 04:47:01,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 04:47:01,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 04:47:01,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 04:47:01,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 04:47:01,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 04:47:01,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 04:47:01,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 04:47:01,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 04:47:01,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 04:47:01,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 04:47:01,037 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18c4bd9ccce67fd7e2b8132eb9e5112bf2af351c [2021-08-26 04:47:01,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 04:47:01,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 04:47:01,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 04:47:01,302 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 04:47:01,303 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 04:47:01,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/egcd2-ll.c [2021-08-26 04:47:01,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00b2a1dfb/3ec2effce9184a7f9751ae4a1aee928a/FLAG210fae969 [2021-08-26 04:47:01,739 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 04:47:01,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/egcd2-ll.c [2021-08-26 04:47:01,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00b2a1dfb/3ec2effce9184a7f9751ae4a1aee928a/FLAG210fae969 [2021-08-26 04:47:02,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00b2a1dfb/3ec2effce9184a7f9751ae4a1aee928a [2021-08-26 04:47:02,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 04:47:02,156 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 04:47:02,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 04:47:02,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 04:47:02,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 04:47:02,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:47:02" (1/1) ... [2021-08-26 04:47:02,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed8783e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:02, skipping insertion in model container [2021-08-26 04:47:02,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:47:02" (1/1) ... [2021-08-26 04:47:02,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 04:47:02,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 04:47:02,270 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/egcd2-ll.c[490,503] [2021-08-26 04:47:02,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 04:47:02,288 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 04:47:02,295 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/egcd2-ll.c[490,503] [2021-08-26 04:47:02,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 04:47:02,309 INFO L208 MainTranslator]: Completed translation [2021-08-26 04:47:02,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:02 WrapperNode [2021-08-26 04:47:02,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 04:47:02,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 04:47:02,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 04:47:02,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 04:47:02,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:02" (1/1) ... [2021-08-26 04:47:02,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:02" (1/1) ... [2021-08-26 04:47:02,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 04:47:02,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 04:47:02,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 04:47:02,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 04:47:02,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:02" (1/1) ... [2021-08-26 04:47:02,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:02" (1/1) ... [2021-08-26 04:47:02,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:02" (1/1) ... [2021-08-26 04:47:02,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:02" (1/1) ... [2021-08-26 04:47:02,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:02" (1/1) ... [2021-08-26 04:47:02,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:02" (1/1) ... [2021-08-26 04:47:02,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:02" (1/1) ... [2021-08-26 04:47:02,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 04:47:02,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 04:47:02,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 04:47:02,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 04:47:02,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:02" (1/1) ... [2021-08-26 04:47:02,418 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 04:47:02,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:02,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 04:47:02,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 04:47:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 04:47:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 04:47:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 04:47:02,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 04:47:02,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 04:47:02,757 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-08-26 04:47:02,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:47:02 BoogieIcfgContainer [2021-08-26 04:47:02,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 04:47:02,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 04:47:02,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 04:47:02,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 04:47:02,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 04:47:02" (1/3) ... [2021-08-26 04:47:02,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fba725d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:47:02, skipping insertion in model container [2021-08-26 04:47:02,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:47:02" (2/3) ... [2021-08-26 04:47:02,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fba725d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:47:02, skipping insertion in model container [2021-08-26 04:47:02,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:47:02" (3/3) ... [2021-08-26 04:47:02,764 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll.c [2021-08-26 04:47:02,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 04:47:02,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-08-26 04:47:02,797 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 04:47:02,801 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 04:47:02,801 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-26 04:47:02,811 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 40 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:02,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 04:47:02,814 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:02,814 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:02,815 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:02,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:02,818 INFO L82 PathProgramCache]: Analyzing trace with hash -143929835, now seen corresponding path program 1 times [2021-08-26 04:47:02,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:02,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108229950] [2021-08-26 04:47:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:02,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:02,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:02,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108229950] [2021-08-26 04:47:02,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108229950] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:02,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:02,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 04:47:02,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358003617] [2021-08-26 04:47:02,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 04:47:02,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:02,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 04:47:02,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 04:47:02,939 INFO L87 Difference]: Start difference. First operand has 41 states, 34 states have (on average 1.6470588235294117) internal successors, (56), 40 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:02,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:02,954 INFO L93 Difference]: Finished difference Result 79 states and 108 transitions. [2021-08-26 04:47:02,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 04:47:02,955 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 04:47:02,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:02,960 INFO L225 Difference]: With dead ends: 79 [2021-08-26 04:47:02,961 INFO L226 Difference]: Without dead ends: 37 [2021-08-26 04:47:02,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 04:47:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-08-26 04:47:02,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-08-26 04:47:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 36 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 04:47:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-08-26 04:47:02,988 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 13 [2021-08-26 04:47:02,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:02,989 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-08-26 04:47:02,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-08-26 04:47:02,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 04:47:02,990 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:02,990 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:02,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 04:47:02,990 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:02,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:02,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1053959272, now seen corresponding path program 1 times [2021-08-26 04:47:02,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:02,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018856787] [2021-08-26 04:47:02,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:02,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:03,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:03,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789858471] [2021-08-26 04:47:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:03,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:03,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:03,004 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:03,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 04:47:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:03,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 04:47:03,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:03,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:03,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:03,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018856787] [2021-08-26 04:47:03,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:03,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789858471] [2021-08-26 04:47:03,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789858471] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:03,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:03,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 04:47:03,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577795267] [2021-08-26 04:47:03,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 04:47:03,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:03,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 04:47:03,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:03,294 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 04:47:03,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:03,411 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2021-08-26 04:47:03,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 04:47:03,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 04:47:03,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:03,412 INFO L225 Difference]: With dead ends: 65 [2021-08-26 04:47:03,412 INFO L226 Difference]: Without dead ends: 57 [2021-08-26 04:47:03,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 58.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:47:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-08-26 04:47:03,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2021-08-26 04:47:03,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:03,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-08-26 04:47:03,417 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 14 [2021-08-26 04:47:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:03,418 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-08-26 04:47:03,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 04:47:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-08-26 04:47:03,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 04:47:03,418 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:03,420 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:03,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:03,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:03,637 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:03,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:03,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1053955298, now seen corresponding path program 1 times [2021-08-26 04:47:03,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:03,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230131684] [2021-08-26 04:47:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:03,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:03,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:03,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039160462] [2021-08-26 04:47:03,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:03,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:03,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:03,660 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:03,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 04:47:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:03,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 04:47:03,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:03,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:03,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:03,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230131684] [2021-08-26 04:47:03,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:03,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039160462] [2021-08-26 04:47:03,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039160462] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:03,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:03,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 04:47:03,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165515197] [2021-08-26 04:47:03,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:47:03,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:03,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:47:03,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:47:03,870 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 04:47:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:04,005 INFO L93 Difference]: Finished difference Result 75 states and 78 transitions. [2021-08-26 04:47:04,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 04:47:04,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 04:47:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:04,008 INFO L225 Difference]: With dead ends: 75 [2021-08-26 04:47:04,008 INFO L226 Difference]: Without dead ends: 73 [2021-08-26 04:47:04,009 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 63.9ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-08-26 04:47:04,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-26 04:47:04,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 41. [2021-08-26 04:47:04,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.2) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-08-26 04:47:04,020 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 14 [2021-08-26 04:47:04,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:04,020 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-08-26 04:47:04,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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 04:47:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-08-26 04:47:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 04:47:04,020 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:04,021 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:04,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:04,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-26 04:47:04,239 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:04,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:04,240 INFO L82 PathProgramCache]: Analyzing trace with hash 761397313, now seen corresponding path program 1 times [2021-08-26 04:47:04,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:04,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768784217] [2021-08-26 04:47:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:04,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:04,250 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:04,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176510044] [2021-08-26 04:47:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:04,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:04,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:04,257 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:04,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 04:47:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:04,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 04:47:04,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:04,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:04,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768784217] [2021-08-26 04:47:04,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:04,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176510044] [2021-08-26 04:47:04,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176510044] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:04,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:04,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 04:47:04,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697765899] [2021-08-26 04:47:04,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 04:47:04,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:04,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 04:47:04,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 04:47:04,478 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:04,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:04,536 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2021-08-26 04:47:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 04:47:04,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-26 04:47:04,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:04,537 INFO L225 Difference]: With dead ends: 59 [2021-08-26 04:47:04,537 INFO L226 Difference]: Without dead ends: 57 [2021-08-26 04:47:04,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:04,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-08-26 04:47:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2021-08-26 04:47:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.25) internal successors, (55), 49 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-08-26 04:47:04,541 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 16 [2021-08-26 04:47:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:04,541 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-08-26 04:47:04,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-08-26 04:47:04,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 04:47:04,542 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:04,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:04,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:04,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:04,757 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:04,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:04,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1558534660, now seen corresponding path program 1 times [2021-08-26 04:47:04,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:04,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673258106] [2021-08-26 04:47:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:04,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:04,766 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:04,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261132810] [2021-08-26 04:47:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:04,766 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:04,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:04,767 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:04,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 04:47:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:04,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 04:47:04,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:05,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:05,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673258106] [2021-08-26 04:47:05,119 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:05,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261132810] [2021-08-26 04:47:05,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261132810] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:05,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:05,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 04:47:05,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609396443] [2021-08-26 04:47:05,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 04:47:05,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:05,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 04:47:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:47:05,121 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:05,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:05,228 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2021-08-26 04:47:05,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 04:47:05,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-26 04:47:05,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:05,231 INFO L225 Difference]: With dead ends: 57 [2021-08-26 04:47:05,231 INFO L226 Difference]: Without dead ends: 55 [2021-08-26 04:47:05,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:47:05,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-26 04:47:05,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2021-08-26 04:47:05,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-08-26 04:47:05,234 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 18 [2021-08-26 04:47:05,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:05,234 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-08-26 04:47:05,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:05,235 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-08-26 04:47:05,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 04:47:05,235 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:05,235 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:05,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:05,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:05,449 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:05,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:05,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1191620505, now seen corresponding path program 1 times [2021-08-26 04:47:05,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:05,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473662542] [2021-08-26 04:47:05,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:05,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:05,457 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:05,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132433296] [2021-08-26 04:47:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:05,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:05,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:05,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:05,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 04:47:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:05,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 04:47:05,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:05,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:05,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473662542] [2021-08-26 04:47:05,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:05,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132433296] [2021-08-26 04:47:05,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132433296] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:05,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:05,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 04:47:05,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790180330] [2021-08-26 04:47:05,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 04:47:05,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:05,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 04:47:05,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:05,853 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:05,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:05,933 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2021-08-26 04:47:05,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 04:47:05,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-08-26 04:47:05,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:05,935 INFO L225 Difference]: With dead ends: 59 [2021-08-26 04:47:05,935 INFO L226 Difference]: Without dead ends: 57 [2021-08-26 04:47:05,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:05,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-08-26 04:47:05,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2021-08-26 04:47:05,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 49 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-08-26 04:47:05,952 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 20 [2021-08-26 04:47:05,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:05,952 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-08-26 04:47:05,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-08-26 04:47:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-26 04:47:05,954 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:05,954 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:05,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:06,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:06,169 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:06,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:06,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1656795766, now seen corresponding path program 1 times [2021-08-26 04:47:06,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:06,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101451103] [2021-08-26 04:47:06,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:06,170 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:06,182 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:06,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258202203] [2021-08-26 04:47:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:06,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:06,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:06,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:06,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 04:47:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:06,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-26 04:47:06,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:06,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:06,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101451103] [2021-08-26 04:47:06,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:06,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258202203] [2021-08-26 04:47:06,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258202203] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:06,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:06,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 04:47:06,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848876331] [2021-08-26 04:47:06,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 04:47:06,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:06,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 04:47:06,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:06,426 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:06,496 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2021-08-26 04:47:06,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 04:47:06,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-08-26 04:47:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:06,497 INFO L225 Difference]: With dead ends: 100 [2021-08-26 04:47:06,497 INFO L226 Difference]: Without dead ends: 98 [2021-08-26 04:47:06,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:47:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-26 04:47:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 70. [2021-08-26 04:47:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 64 states have (on average 1.21875) internal successors, (78), 69 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-08-26 04:47:06,509 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2021-08-26 04:47:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:06,510 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-08-26 04:47:06,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:06,511 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-08-26 04:47:06,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 04:47:06,511 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:06,511 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:06,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:06,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:06,725 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:06,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:06,725 INFO L82 PathProgramCache]: Analyzing trace with hash -140859955, now seen corresponding path program 1 times [2021-08-26 04:47:06,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:06,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980237060] [2021-08-26 04:47:06,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:06,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:06,735 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:06,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516737787] [2021-08-26 04:47:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:06,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:06,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:06,736 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:06,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-26 04:47:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:06,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 04:47:06,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:06,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:06,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980237060] [2021-08-26 04:47:06,960 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:06,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516737787] [2021-08-26 04:47:06,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516737787] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:06,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:06,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 04:47:06,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820425128] [2021-08-26 04:47:06,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:47:06,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:06,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:47:06,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:47:06,962 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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 04:47:07,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:07,080 INFO L93 Difference]: Finished difference Result 161 states and 173 transitions. [2021-08-26 04:47:07,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 04:47:07,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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 04:47:07,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:07,081 INFO L225 Difference]: With dead ends: 161 [2021-08-26 04:47:07,081 INFO L226 Difference]: Without dead ends: 153 [2021-08-26 04:47:07,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-08-26 04:47:07,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-08-26 04:47:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 105. [2021-08-26 04:47:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 99 states have (on average 1.2828282828282829) internal successors, (127), 104 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2021-08-26 04:47:07,088 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 26 [2021-08-26 04:47:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:07,088 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2021-08-26 04:47:07,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 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 04:47:07,089 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2021-08-26 04:47:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-26 04:47:07,089 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:07,089 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:07,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:07,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:07,312 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:07,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:07,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2076512566, now seen corresponding path program 1 times [2021-08-26 04:47:07,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:07,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783505862] [2021-08-26 04:47:07,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:07,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:07,326 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:07,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096092817] [2021-08-26 04:47:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:07,328 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:07,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:07,329 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:07,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-26 04:47:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:07,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 04:47:07,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:07,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:07,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783505862] [2021-08-26 04:47:07,642 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:07,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096092817] [2021-08-26 04:47:07,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096092817] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:07,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:07,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 04:47:07,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439984812] [2021-08-26 04:47:07,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:47:07,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:07,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:47:07,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:47:07,644 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:07,759 INFO L93 Difference]: Finished difference Result 172 states and 207 transitions. [2021-08-26 04:47:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 04:47:07,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-08-26 04:47:07,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:07,761 INFO L225 Difference]: With dead ends: 172 [2021-08-26 04:47:07,761 INFO L226 Difference]: Without dead ends: 166 [2021-08-26 04:47:07,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 51.6ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-26 04:47:07,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-26 04:47:07,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2021-08-26 04:47:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 147 states have (on average 1.2925170068027212) internal successors, (190), 152 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 190 transitions. [2021-08-26 04:47:07,775 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 190 transitions. Word has length 28 [2021-08-26 04:47:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:07,775 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 190 transitions. [2021-08-26 04:47:07,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:07,775 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 190 transitions. [2021-08-26 04:47:07,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-26 04:47:07,776 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:07,776 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] [2021-08-26 04:47:07,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:07,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-08-26 04:47:07,994 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:07,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:07,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1631059527, now seen corresponding path program 1 times [2021-08-26 04:47:07,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:07,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993519029] [2021-08-26 04:47:07,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:07,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:08,002 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:08,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364996867] [2021-08-26 04:47:08,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:08,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:08,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:08,004 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:08,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-26 04:47:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:08,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-26 04:47:08,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:08,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:08,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993519029] [2021-08-26 04:47:08,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:08,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364996867] [2021-08-26 04:47:08,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364996867] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:08,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:08,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 04:47:08,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598673106] [2021-08-26 04:47:08,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 04:47:08,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:08,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 04:47:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-08-26 04:47:08,718 INFO L87 Difference]: Start difference. First operand 153 states and 190 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:08,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:08,936 INFO L93 Difference]: Finished difference Result 163 states and 196 transitions. [2021-08-26 04:47:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 04:47:08,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-08-26 04:47:08,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:08,937 INFO L225 Difference]: With dead ends: 163 [2021-08-26 04:47:08,937 INFO L226 Difference]: Without dead ends: 161 [2021-08-26 04:47:08,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 155.5ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-08-26 04:47:08,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-08-26 04:47:08,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 153. [2021-08-26 04:47:08,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 147 states have (on average 1.2789115646258504) internal successors, (188), 152 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:08,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 188 transitions. [2021-08-26 04:47:08,945 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 188 transitions. Word has length 30 [2021-08-26 04:47:08,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:08,945 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 188 transitions. [2021-08-26 04:47:08,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 188 transitions. [2021-08-26 04:47:08,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-26 04:47:08,946 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:08,946 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:08,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:09,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-26 04:47:09,153 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:09,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:09,153 INFO L82 PathProgramCache]: Analyzing trace with hash 215015132, now seen corresponding path program 1 times [2021-08-26 04:47:09,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:09,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591173189] [2021-08-26 04:47:09,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:09,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:09,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:09,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841060198] [2021-08-26 04:47:09,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:09,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:09,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:09,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:09,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-26 04:47:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:09,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 45 conjunts are in the unsatisfiable core [2021-08-26 04:47:09,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:10,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:10,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591173189] [2021-08-26 04:47:10,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:10,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841060198] [2021-08-26 04:47:10,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841060198] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:10,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:10,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 04:47:10,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796995864] [2021-08-26 04:47:10,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 04:47:10,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:10,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 04:47:10,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:47:10,268 INFO L87 Difference]: Start difference. First operand 153 states and 188 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:10,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:10,546 INFO L93 Difference]: Finished difference Result 168 states and 201 transitions. [2021-08-26 04:47:10,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 04:47:10,547 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 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 04:47:10,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:10,549 INFO L225 Difference]: With dead ends: 168 [2021-08-26 04:47:10,549 INFO L226 Difference]: Without dead ends: 166 [2021-08-26 04:47:10,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 201.7ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-08-26 04:47:10,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-26 04:47:10,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 153. [2021-08-26 04:47:10,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 147 states have (on average 1.2653061224489797) internal successors, (186), 152 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:10,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 186 transitions. [2021-08-26 04:47:10,559 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 186 transitions. Word has length 32 [2021-08-26 04:47:10,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:10,559 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 186 transitions. [2021-08-26 04:47:10,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:10,559 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 186 transitions. [2021-08-26 04:47:10,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-26 04:47:10,562 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:10,562 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] [2021-08-26 04:47:10,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:10,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-08-26 04:47:10,773 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:10,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:10,773 INFO L82 PathProgramCache]: Analyzing trace with hash -258480994, now seen corresponding path program 2 times [2021-08-26 04:47:10,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:10,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057296506] [2021-08-26 04:47:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:10,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:10,781 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:10,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956406675] [2021-08-26 04:47:10,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:47:10,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:10,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:10,782 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:10,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-26 04:47:11,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:47:11,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:11,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-26 04:47:11,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:11,356 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:11,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:11,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057296506] [2021-08-26 04:47:11,357 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:11,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956406675] [2021-08-26 04:47:11,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956406675] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:11,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:11,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 04:47:11,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637118651] [2021-08-26 04:47:11,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 04:47:11,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:11,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 04:47:11,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-26 04:47:11,358 INFO L87 Difference]: Start difference. First operand 153 states and 186 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 04:47:11,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:11,588 INFO L93 Difference]: Finished difference Result 175 states and 209 transitions. [2021-08-26 04:47:11,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 04:47:11,589 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 04:47:11,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:11,590 INFO L225 Difference]: With dead ends: 175 [2021-08-26 04:47:11,590 INFO L226 Difference]: Without dead ends: 173 [2021-08-26 04:47:11,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 140.6ms TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-08-26 04:47:11,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-08-26 04:47:11,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 162. [2021-08-26 04:47:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 156 states have (on average 1.2564102564102564) internal successors, (196), 161 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:11,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 196 transitions. [2021-08-26 04:47:11,601 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 196 transitions. Word has length 32 [2021-08-26 04:47:11,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:11,602 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 196 transitions. [2021-08-26 04:47:11,602 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 04:47:11,602 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 196 transitions. [2021-08-26 04:47:11,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-26 04:47:11,606 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:11,606 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:11,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:11,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-26 04:47:11,810 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:11,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:11,810 INFO L82 PathProgramCache]: Analyzing trace with hash 166708793, now seen corresponding path program 1 times [2021-08-26 04:47:11,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:11,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399362190] [2021-08-26 04:47:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:11,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:11,826 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:11,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214829514] [2021-08-26 04:47:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:11,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:11,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:11,829 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:11,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-26 04:47:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:12,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 39 conjunts are in the unsatisfiable core [2021-08-26 04:47:12,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:12,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:12,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399362190] [2021-08-26 04:47:12,893 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:12,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214829514] [2021-08-26 04:47:12,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214829514] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:12,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:12,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-08-26 04:47:12,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042863673] [2021-08-26 04:47:12,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 04:47:12,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:12,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 04:47:12,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-26 04:47:12,895 INFO L87 Difference]: Start difference. First operand 162 states and 196 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:13,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:13,248 INFO L93 Difference]: Finished difference Result 198 states and 235 transitions. [2021-08-26 04:47:13,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-26 04:47:13,248 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 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 35 [2021-08-26 04:47:13,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:13,249 INFO L225 Difference]: With dead ends: 198 [2021-08-26 04:47:13,249 INFO L226 Difference]: Without dead ends: 192 [2021-08-26 04:47:13,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 239.5ms TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-08-26 04:47:13,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-08-26 04:47:13,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 185. [2021-08-26 04:47:13,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 179 states have (on average 1.2513966480446927) internal successors, (224), 184 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 224 transitions. [2021-08-26 04:47:13,260 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 224 transitions. Word has length 35 [2021-08-26 04:47:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:13,260 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 224 transitions. [2021-08-26 04:47:13,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:13,260 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 224 transitions. [2021-08-26 04:47:13,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-08-26 04:47:13,261 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:13,261 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:13,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-08-26 04:47:13,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-26 04:47:13,478 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:13,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:13,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1049273685, now seen corresponding path program 2 times [2021-08-26 04:47:13,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:13,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122741559] [2021-08-26 04:47:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:13,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:13,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:13,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546111722] [2021-08-26 04:47:13,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:47:13,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:13,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:13,487 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:13,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-26 04:47:13,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:47:13,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:13,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 04:47:13,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:13,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:13,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122741559] [2021-08-26 04:47:13,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:13,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546111722] [2021-08-26 04:47:13,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546111722] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:13,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:13,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 04:47:13,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771188759] [2021-08-26 04:47:13,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 04:47:13,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:13,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 04:47:13,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:13,982 INFO L87 Difference]: Start difference. First operand 185 states and 224 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:14,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:14,041 INFO L93 Difference]: Finished difference Result 244 states and 289 transitions. [2021-08-26 04:47:14,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 04:47:14,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-08-26 04:47:14,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:14,042 INFO L225 Difference]: With dead ends: 244 [2021-08-26 04:47:14,043 INFO L226 Difference]: Without dead ends: 170 [2021-08-26 04:47:14,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:47:14,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-08-26 04:47:14,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 150. [2021-08-26 04:47:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 144 states have (on average 1.1875) internal successors, (171), 149 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 171 transitions. [2021-08-26 04:47:14,053 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 171 transitions. Word has length 40 [2021-08-26 04:47:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:14,053 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 171 transitions. [2021-08-26 04:47:14,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:14,054 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 171 transitions. [2021-08-26 04:47:14,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 04:47:14,054 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:14,054 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:14,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:14,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-08-26 04:47:14,255 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:14,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:14,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1676607048, now seen corresponding path program 1 times [2021-08-26 04:47:14,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:14,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650030864] [2021-08-26 04:47:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:14,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:14,271 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:14,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285480767] [2021-08-26 04:47:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:14,271 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:14,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:14,272 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:14,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-26 04:47:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:47:14,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 55 conjunts are in the unsatisfiable core [2021-08-26 04:47:14,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:15,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:15,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650030864] [2021-08-26 04:47:15,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:15,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285480767] [2021-08-26 04:47:15,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285480767] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:15,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:15,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-08-26 04:47:15,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049731346] [2021-08-26 04:47:15,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 04:47:15,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:15,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 04:47:15,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-08-26 04:47:15,978 INFO L87 Difference]: Start difference. First operand 150 states and 171 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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 04:47:17,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:17,202 INFO L93 Difference]: Finished difference Result 161 states and 180 transitions. [2021-08-26 04:47:17,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 04:47:17,205 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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 04:47:17,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:17,206 INFO L225 Difference]: With dead ends: 161 [2021-08-26 04:47:17,206 INFO L226 Difference]: Without dead ends: 159 [2021-08-26 04:47:17,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 578.4ms TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-08-26 04:47:17,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-08-26 04:47:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 127. [2021-08-26 04:47:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 126 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 144 transitions. [2021-08-26 04:47:17,215 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 144 transitions. Word has length 41 [2021-08-26 04:47:17,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:17,215 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 144 transitions. [2021-08-26 04:47:17,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 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 04:47:17,215 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 144 transitions. [2021-08-26 04:47:17,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-08-26 04:47:17,215 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:17,215 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:17,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:17,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:17,421 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:17,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:17,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1203110922, now seen corresponding path program 3 times [2021-08-26 04:47:17,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:17,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836543983] [2021-08-26 04:47:17,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:17,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:17,427 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:17,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301253123] [2021-08-26 04:47:17,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 04:47:17,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:17,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:17,429 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:17,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-26 04:47:17,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-08-26 04:47:17,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:17,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 04:47:17,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-26 04:47:18,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:18,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836543983] [2021-08-26 04:47:18,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:18,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301253123] [2021-08-26 04:47:18,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301253123] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:18,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:18,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 04:47:18,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127419981] [2021-08-26 04:47:18,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 04:47:18,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:18,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 04:47:18,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 04:47:18,043 INFO L87 Difference]: Start difference. First operand 127 states and 144 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:18,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:18,108 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2021-08-26 04:47:18,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 04:47:18,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 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 41 [2021-08-26 04:47:18,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:18,109 INFO L225 Difference]: With dead ends: 127 [2021-08-26 04:47:18,109 INFO L226 Difference]: Without dead ends: 125 [2021-08-26 04:47:18,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:47:18,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-08-26 04:47:18,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 117. [2021-08-26 04:47:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.1696428571428572) internal successors, (131), 116 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:18,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2021-08-26 04:47:18,118 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 41 [2021-08-26 04:47:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:18,118 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2021-08-26 04:47:18,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2021-08-26 04:47:18,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-26 04:47:18,119 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:18,119 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:18,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:18,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-26 04:47:18,333 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:18,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:18,333 INFO L82 PathProgramCache]: Analyzing trace with hash 73031501, now seen corresponding path program 2 times [2021-08-26 04:47:18,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:18,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534928053] [2021-08-26 04:47:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:18,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:18,339 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:18,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074457716] [2021-08-26 04:47:18,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:47:18,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:18,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:18,340 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:18,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-26 04:47:18,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 04:47:18,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:18,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 42 conjunts are in the unsatisfiable core [2021-08-26 04:47:18,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:47:19,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:19,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534928053] [2021-08-26 04:47:19,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:19,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074457716] [2021-08-26 04:47:19,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074457716] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:47:19,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:47:19,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 04:47:19,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48860373] [2021-08-26 04:47:19,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 04:47:19,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:19,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 04:47:19,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-08-26 04:47:19,827 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:20,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:47:20,763 INFO L93 Difference]: Finished difference Result 157 states and 175 transitions. [2021-08-26 04:47:20,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-26 04:47:20,763 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-08-26 04:47:20,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:47:20,764 INFO L225 Difference]: With dead ends: 157 [2021-08-26 04:47:20,764 INFO L226 Difference]: Without dead ends: 151 [2021-08-26 04:47:20,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 503.1ms TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-08-26 04:47:20,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-08-26 04:47:20,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-08-26 04:47:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 142 states have (on average 1.1619718309859155) internal successors, (165), 146 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:20,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 165 transitions. [2021-08-26 04:47:20,777 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 165 transitions. Word has length 44 [2021-08-26 04:47:20,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:47:20,777 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 165 transitions. [2021-08-26 04:47:20,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:47:20,777 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 165 transitions. [2021-08-26 04:47:20,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-26 04:47:20,778 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:47:20,778 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:47:20,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-26 04:47:20,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-26 04:47:20,997 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:47:20,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:47:20,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1376461020, now seen corresponding path program 3 times [2021-08-26 04:47:20,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:47:20,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591824773] [2021-08-26 04:47:20,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:47:20,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:47:21,004 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:47:21,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040979037] [2021-08-26 04:47:21,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 04:47:21,006 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:47:21,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:47:21,007 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:47:21,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-26 04:47:22,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 04:47:22,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:47:22,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 50 conjunts are in the unsatisfiable core [2021-08-26 04:47:22,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:47:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-26 04:47:29,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:47:29,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591824773] [2021-08-26 04:47:29,184 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:47:29,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040979037] [2021-08-26 04:47:29,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040979037] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:47:29,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:47:29,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-26 04:47:29,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679472113] [2021-08-26 04:47:29,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-26 04:47:29,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:47:29,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-26 04:47:29,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=162, Unknown=3, NotChecked=0, Total=210 [2021-08-26 04:47:29,185 INFO L87 Difference]: Start difference. First operand 147 states and 165 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:48:01,690 WARN L207 SmtUtils]: Spent 22.18 s on a formula simplification. DAG size of input: 59 DAG size of output: 35 [2021-08-26 04:48:18,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:48:18,637 INFO L93 Difference]: Finished difference Result 149 states and 166 transitions. [2021-08-26 04:48:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-26 04:48:18,637 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 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 47 [2021-08-26 04:48:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:48:18,638 INFO L225 Difference]: With dead ends: 149 [2021-08-26 04:48:18,638 INFO L226 Difference]: Without dead ends: 141 [2021-08-26 04:48:18,638 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 40653.6ms TimeCoverageRelationStatistics Valid=134, Invalid=461, Unknown=5, NotChecked=0, Total=600 [2021-08-26 04:48:18,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-08-26 04:48:18,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 97. [2021-08-26 04:48:18,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 94 states have (on average 1.0957446808510638) internal successors, (103), 96 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:48:18,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2021-08-26 04:48:18,646 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 47 [2021-08-26 04:48:18,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:48:18,647 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2021-08-26 04:48:18,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:48:18,647 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2021-08-26 04:48:18,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-26 04:48:18,647 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:48:18,647 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:48:18,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-26 04:48:18,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-26 04:48:18,869 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:48:18,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:48:18,869 INFO L82 PathProgramCache]: Analyzing trace with hash 71045575, now seen corresponding path program 1 times [2021-08-26 04:48:18,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:48:18,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575939989] [2021-08-26 04:48:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:18,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:48:18,875 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:48:18,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406351775] [2021-08-26 04:48:18,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:18,875 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:48:18,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:48:18,877 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:48:18,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-26 04:48:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:48:19,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 04:48:19,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:48:19,655 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 04:48:19,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:48:19,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575939989] [2021-08-26 04:48:19,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:48:19,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406351775] [2021-08-26 04:48:19,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406351775] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:48:19,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:48:19,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 04:48:19,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767597727] [2021-08-26 04:48:19,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 04:48:19,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:48:19,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 04:48:19,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-26 04:48:19,657 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:48:19,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:48:19,903 INFO L93 Difference]: Finished difference Result 164 states and 173 transitions. [2021-08-26 04:48:19,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 04:48:19,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-08-26 04:48:19,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:48:19,904 INFO L225 Difference]: With dead ends: 164 [2021-08-26 04:48:19,904 INFO L226 Difference]: Without dead ends: 158 [2021-08-26 04:48:19,905 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 73.8ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-08-26 04:48:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-08-26 04:48:19,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 118. [2021-08-26 04:48:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 115 states have (on average 1.1043478260869566) internal successors, (127), 117 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:48:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions. [2021-08-26 04:48:19,914 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 49 [2021-08-26 04:48:19,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:48:19,914 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 127 transitions. [2021-08-26 04:48:19,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:48:19,915 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 127 transitions. [2021-08-26 04:48:19,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-08-26 04:48:19,915 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:48:19,915 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:48:19,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-08-26 04:48:20,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:48:20,125 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:48:20,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:48:20,125 INFO L82 PathProgramCache]: Analyzing trace with hash 74862797, now seen corresponding path program 1 times [2021-08-26 04:48:20,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:48:20,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543436507] [2021-08-26 04:48:20,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:20,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:48:20,134 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:48:20,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846915534] [2021-08-26 04:48:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:20,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:48:20,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:48:20,141 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:48:20,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-08-26 04:48:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 04:48:20,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 04:48:20,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:48:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-08-26 04:48:20,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:48:20,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543436507] [2021-08-26 04:48:20,954 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:48:20,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846915534] [2021-08-26 04:48:20,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846915534] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 04:48:20,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 04:48:20,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 04:48:20,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093365799] [2021-08-26 04:48:20,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 04:48:20,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:48:20,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 04:48:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:48:20,955 INFO L87 Difference]: Start difference. First operand 118 states and 127 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:48:21,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:48:21,103 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2021-08-26 04:48:21,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 04:48:21,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 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 49 [2021-08-26 04:48:21,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:48:21,104 INFO L225 Difference]: With dead ends: 118 [2021-08-26 04:48:21,104 INFO L226 Difference]: Without dead ends: 110 [2021-08-26 04:48:21,104 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 63.1ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-26 04:48:21,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-08-26 04:48:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 73. [2021-08-26 04:48:21,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0833333333333333) internal successors, (78), 72 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:48:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2021-08-26 04:48:21,111 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 49 [2021-08-26 04:48:21,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:48:21,111 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2021-08-26 04:48:21,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:48:21,111 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2021-08-26 04:48:21,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-26 04:48:21,111 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 04:48:21,111 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 04:48:21,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-08-26 04:48:21,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:48:21,312 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-08-26 04:48:21,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 04:48:21,312 INFO L82 PathProgramCache]: Analyzing trace with hash 574584924, now seen corresponding path program 2 times [2021-08-26 04:48:21,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 04:48:21,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319745001] [2021-08-26 04:48:21,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 04:48:21,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 04:48:21,329 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 04:48:21,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840753958] [2021-08-26 04:48:21,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 04:48:21,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 04:48:21,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 04:48:21,330 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 04:48:21,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-08-26 04:48:21,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-26 04:48:21,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 04:48:21,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-26 04:48:21,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 04:48:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-08-26 04:48:22,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 04:48:22,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319745001] [2021-08-26 04:48:22,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 04:48:22,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840753958] [2021-08-26 04:48:22,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840753958] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 04:48:22,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 04:48:22,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 04:48:22,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895129943] [2021-08-26 04:48:22,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 04:48:22,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 04:48:22,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 04:48:22,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-26 04:48:22,369 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 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 04:48:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 04:48:22,801 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2021-08-26 04:48:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 04:48:22,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 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 50 [2021-08-26 04:48:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 04:48:22,802 INFO L225 Difference]: With dead ends: 73 [2021-08-26 04:48:22,802 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 04:48:22,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 66.0ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-26 04:48:22,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 04:48:22,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 04:48:22,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 04:48:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 04:48:22,803 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2021-08-26 04:48:22,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 04:48:22,803 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 04:48:22,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 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 04:48:22,804 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 04:48:22,804 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 04:48:22,806 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:48:22,806 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:48:22,806 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:48:22,806 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:48:22,807 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:48:22,807 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 04:48:22,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-08-26 04:48:23,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-08-26 04:48:23,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 04:48:23,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:48:23,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:48:23,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:48:23,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:48:23,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:48:23,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:48:23,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:48:23,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:48:23,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 04:48:52,824 WARN L207 SmtUtils]: Spent 27.31 s on a formula simplification. DAG size of input: 101 DAG size of output: 53 [2021-08-26 04:49:18,666 WARN L207 SmtUtils]: Spent 24.13 s on a formula simplification. DAG size of input: 97 DAG size of output: 52 [2021-08-26 04:49:18,668 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:49:18,668 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:49:18,668 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse8 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse9 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (let ((.cse7 (+ .cse8 .cse9))) (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (or (= ULTIMATE.start_main_~k~0 0) (= (mod (+ (* ULTIMATE.start_main_~c~0 (- 1)) .cse8 .cse9) ULTIMATE.start_main_~k~0) 0))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse7)) (.cse4 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse5 (<= 1 ULTIMATE.start_main_~x~0)) (.cse6 (= ULTIMATE.start_main_~a~0 .cse7))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 1) .cse2 .cse3 (<= 1 ULTIMATE.start_main_~b~0) .cse4 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 .cse2 .cse3 (<= 1 ULTIMATE.start_main_~y~0) .cse4 .cse5 .cse6))))) [2021-08-26 04:49:18,668 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:49:18,668 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse6 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse6)) (.cse3 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse4 (<= 1 ULTIMATE.start_main_~x~0)) (.cse5 (= ULTIMATE.start_main_~a~0 .cse6))) (or (and .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 (<= 1 ULTIMATE.start_main_~b~0) .cse3 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start_main_~y~0) .cse3 .cse4 .cse5)))) [2021-08-26 04:49:18,668 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:49:18,668 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: (let ((.cse8 (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse9 (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (let ((.cse7 (+ .cse8 .cse9))) (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (or (= ULTIMATE.start_main_~k~0 0) (= (mod (+ (* ULTIMATE.start_main_~c~0 (- 1)) .cse8 .cse9) ULTIMATE.start_main_~k~0) 0))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse7)) (.cse4 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse5 (<= 1 ULTIMATE.start_main_~x~0)) (.cse6 (= ULTIMATE.start_main_~a~0 .cse7))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 1) .cse2 .cse3 (<= 1 ULTIMATE.start_main_~b~0) .cse4 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 .cse2 .cse3 (<= 1 ULTIMATE.start_main_~y~0) .cse4 .cse5 .cse6))))) [2021-08-26 04:49:18,668 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 50 51) the Hoare annotation is: (let ((.cse6 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse6)) (.cse3 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse4 (<= 1 ULTIMATE.start_main_~x~0)) (.cse5 (= ULTIMATE.start_main_~a~0 .cse6))) (or (and .cse0 (= ULTIMATE.start_main_~p~0 1) .cse1 .cse2 (<= 1 ULTIMATE.start_main_~b~0) .cse3 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start_main_~y~0) .cse3 .cse4 .cse5)))) [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (<= 1 ULTIMATE.start_main_~x~0)) (.cse2 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and (= ULTIMATE.start_main_~p~0 0) .cse0 .cse1 .cse2) (let ((.cse3 (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)))) (and (= .cse3 ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= .cse3 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 .cse2)))) [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L860 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L853 garLoopResultBuilder]: At program point L45-2(lines 45 54) the Hoare annotation is: (let ((.cse16 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse12 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse16)) (.cse14 (<= 1 ULTIMATE.start_main_~y~0)) (.cse13 (= ULTIMATE.start_main_~k~0 0)) (.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (= ULTIMATE.start_main_~p~0 1)) (.cse4 (<= 1 ULTIMATE.start_main_~b~0)) (.cse5 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse6 (= ULTIMATE.start_main_~q~0 0)) (.cse15 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse7 (= ULTIMATE.start_main_~r~0 0)) (.cse8 (= ULTIMATE.start_main_~s~0 1)) (.cse9 (<= 1 ULTIMATE.start_main_~x~0)) (.cse10 (= ULTIMATE.start_main_~a~0 .cse16)) (.cse11 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse12 .cse13 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse14 .cse5 .cse15 .cse9 .cse10) (and .cse12 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse2 .cse3 .cse14 .cse5 .cse9 .cse10) (and .cse13 .cse0 .cse1 .cse4 .cse5 .cse6 .cse15 .cse7 .cse8 .cse9 .cse10 .cse11)))) [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point L45-3(lines 45 54) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L860 garLoopResultBuilder]: At program point L71(lines 18 72) the Hoare annotation is: true [2021-08-26 04:49:18,669 INFO L853 garLoopResultBuilder]: At program point L39-1(lines 7 66) the Hoare annotation is: (let ((.cse0 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse1 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse2 (<= 1 ULTIMATE.start_main_~x~0)) (.cse3 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 (= ULTIMATE.start_main_~p~0 1) (<= 1 ULTIMATE.start_main_~b~0) .cse1 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse2 .cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) .cse1 .cse2 .cse3))) [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point L39-2(lines 39 66) no Hoare annotation was computed. [2021-08-26 04:49:18,669 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:49:18,670 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-08-26 04:49:18,670 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-26 04:49:18,670 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-08-26 04:49:18,670 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-08-26 04:49:18,670 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 04:49:18,670 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:49:18,670 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-26 04:49:18,670 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-08-26 04:49:18,670 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-08-26 04:49:18,670 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-08-26 04:49:18,670 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 04:49:18,670 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 04:49:18,673 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 04:49:18,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 04:49:18 BoogieIcfgContainer [2021-08-26 04:49:18,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 04:49:18,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 04:49:18,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 04:49:18,700 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 04:49:18,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:47:02" (3/4) ... [2021-08-26 04:49:18,702 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 04:49:18,709 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-08-26 04:49:18,709 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 04:49:18,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 04:49:18,710 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 04:49:18,741 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 04:49:18,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 04:49:18,744 INFO L168 Benchmark]: Toolchain (without parser) took 136587.68 ms. Allocated memory was 50.3 MB in the beginning and 209.7 MB in the end (delta: 159.4 MB). Free memory was 26.2 MB in the beginning and 99.6 MB in the end (delta: -73.4 MB). Peak memory consumption was 85.5 MB. Max. memory is 16.1 GB. [2021-08-26 04:49:18,744 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory was 32.4 MB in the beginning and 32.3 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 04:49:18,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.72 ms. Allocated memory is still 50.3 MB. Free memory was 26.1 MB in the beginning and 27.0 MB in the end (delta: -943.7 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-08-26 04:49:18,745 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.00 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 27.0 MB in the beginning and 50.9 MB in the end (delta: -23.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 04:49:18,745 INFO L168 Benchmark]: Boogie Preprocessor took 34.90 ms. Allocated memory is still 67.1 MB. Free memory was 50.9 MB in the beginning and 49.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 04:49:18,745 INFO L168 Benchmark]: RCFGBuilder took 351.37 ms. Allocated memory is still 67.1 MB. Free memory was 49.5 MB in the beginning and 47.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2021-08-26 04:49:18,746 INFO L168 Benchmark]: TraceAbstraction took 135939.66 ms. Allocated memory was 67.1 MB in the beginning and 209.7 MB in the end (delta: 142.6 MB). Free memory was 46.6 MB in the beginning and 103.8 MB in the end (delta: -57.2 MB). Peak memory consumption was 132.8 MB. Max. memory is 16.1 GB. [2021-08-26 04:49:18,746 INFO L168 Benchmark]: Witness Printer took 43.27 ms. Allocated memory is still 209.7 MB. Free memory was 103.8 MB in the beginning and 99.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 04:49:18,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 50.3 MB. Free memory was 32.4 MB in the beginning and 32.3 MB in the end (delta: 40.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 152.72 ms. Allocated memory is still 50.3 MB. Free memory was 26.1 MB in the beginning and 27.0 MB in the end (delta: -943.7 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.00 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 27.0 MB in the beginning and 50.9 MB in the end (delta: -23.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.90 ms. Allocated memory is still 67.1 MB. Free memory was 50.9 MB in the beginning and 49.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 351.37 ms. Allocated memory is still 67.1 MB. Free memory was 49.5 MB in the beginning and 47.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 135939.66 ms. Allocated memory was 67.1 MB in the beginning and 209.7 MB in the end (delta: 142.6 MB). Free memory was 46.6 MB in the beginning and 103.8 MB in the end (delta: -57.2 MB). Peak memory consumption was 132.8 MB. Max. memory is 16.1 GB. * Witness Printer took 43.27 ms. Allocated memory is still 209.7 MB. Free memory was 103.8 MB in the beginning and 99.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - 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, 6 error locations. Started 1 CEGAR loops. OverallTime: 135877.2ms, OverallIterations: 21, TraceHistogramMax: 4, EmptinessCheckTime: 19.4ms, AutomataDifference: 54532.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 55649.4ms, InitialAbstractionConstructionTime: 6.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 640 SDtfs, 1227 SDslu, 1932 SDs, 0 SdLazy, 2661 SolverSat, 226 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 17877.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 729 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 43063.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=185occurred in iteration=13, InterpolantAutomatonStates: 184, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 185.6ms AutomataMinimizationTime, 21 MinimizatonAttempts, 382 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 46 NumberOfFragments, 871 HoareAnnotationTreeSize, 9 FomulaSimplifications, 41669 FormulaSimplificationTreeSizeReduction, 264.2ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 1883 FormulaSimplificationTreeSizeReductionInter, 55378.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 173.8ms SsaConstructionTime, 1052.8ms SatisfiabilityAnalysisTime, 14215.0ms InterpolantComputationTime, 662 NumberOfCodeBlocks, 602 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 641 ConstructedInterpolants, 0 QuantifiedInterpolants, 6554 SizeOfPredicates, 194 NumberOfNonLiveVariables, 2776 ConjunctsInSsa, 443 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 208/332 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 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: (((((((((((((x * y == xy && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) || (((((((((s * y + q * x == b && k == 0) && b < c) && x * y == xy) && 1 <= cond) && 1 <= y) && yy == y * y) && c == a) && 1 <= x) && a == r * y + p * x)) || ((((((((s * y + q * x == b && b < a) && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && 1 <= x) && a == r * y + p * x)) || (((((((((((k == 0 && x * y == xy) && p == 1) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((x * y == xy && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) || ((((((((s * y + q * x == b && b < a) && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && 1 <= x) && a == r * y + p * x) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((x * y == xy && (k == 0 || (c * -1 + r * y + p * x) % k == 0)) && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) || (((((((((s * y + q * x == b && b < a) && x * y == xy) && (k == 0 || (c * -1 + r * y + p * x) % k == 0)) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && 1 <= x) && a == r * y + p * x) - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: (((((((((((x * y == xy && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) || ((((((((s * y + q * x == b && b < a) && x * y == xy) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && 1 <= x) && a == r * y + p * x) - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: (((((((((x * y == xy && p == 1) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) || (((((((s * y + q * x == b && b < a) && x * y == xy) && 1 <= cond) && 1 <= y) && yy == y * y) && 1 <= x) && a == r * y + p * x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((p == 0 && 1 <= y) && 1 <= x) && a == r * y + p * x) || ((((((s * y + q * x == b && b < a) && s * y + q * x == 0) && 1 <= cond) && 1 <= y) && 1 <= x) && a == r * y + p * x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((((x * y == xy && (k == 0 || (c * -1 + r * y + p * x) % k == 0)) && p == 1) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) || (((((((((s * y + q * x == b && b < a) && x * y == xy) && (k == 0 || (c * -1 + r * y + p * x) % k == 0)) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && 1 <= x) && a == r * y + p * x) RESULT: Ultimate proved your program to be correct! [2021-08-26 04:49:18,785 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...