./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a538131f5f4e4e947f8035def161fb9074988eef ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 05:07:50,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 05:07:50,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 05:07:50,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 05:07:50,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 05:07:50,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 05:07:50,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 05:07:50,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 05:07:50,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 05:07:50,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 05:07:50,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 05:07:50,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 05:07:50,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 05:07:50,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 05:07:50,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 05:07:50,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 05:07:50,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 05:07:50,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 05:07:50,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 05:07:50,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 05:07:50,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 05:07:50,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 05:07:50,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 05:07:50,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 05:07:50,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 05:07:50,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 05:07:50,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 05:07:50,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 05:07:50,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 05:07:50,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 05:07:50,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 05:07:50,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 05:07:50,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 05:07:50,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 05:07:50,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 05:07:50,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 05:07:50,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 05:07:50,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 05:07:50,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 05:07:50,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 05:07:50,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 05:07:50,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 05:07:50,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 05:07:50,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 05:07:50,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 05:07:50,992 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 05:07:50,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 05:07:50,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 05:07:50,994 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 05:07:50,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 05:07:50,994 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 05:07:50,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 05:07:50,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 05:07:50,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 05:07:50,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 05:07:50,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 05:07:50,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 05:07:50,996 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 05:07:50,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 05:07:50,997 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 05:07:50,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 05:07:50,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 05:07:50,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 05:07:50,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 05:07:50,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:07:50,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 05:07:50,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 05:07:50,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 05:07:50,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 05:07:50,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 05:07:50,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 05:07:50,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 05:07:50,999 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a538131f5f4e4e947f8035def161fb9074988eef [2021-08-26 05:07:51,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 05:07:51,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 05:07:51,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 05:07:51,322 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 05:07:51,322 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 05:07:51,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2021-08-26 05:07:51,380 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29fd174a0/cd6c59f727d24c8384942c2eab3a8d69/FLAG20035f91f [2021-08-26 05:07:51,776 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 05:07:51,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2021-08-26 05:07:51,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29fd174a0/cd6c59f727d24c8384942c2eab3a8d69/FLAG20035f91f [2021-08-26 05:07:51,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29fd174a0/cd6c59f727d24c8384942c2eab3a8d69 [2021-08-26 05:07:51,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 05:07:51,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 05:07:51,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 05:07:51,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 05:07:51,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 05:07:51,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:07:51" (1/1) ... [2021-08-26 05:07:51,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e53f2cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:07:51, skipping insertion in model container [2021-08-26 05:07:51,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:07:51" (1/1) ... [2021-08-26 05:07:51,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 05:07:51,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 05:07:51,921 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c[596,609] [2021-08-26 05:07:51,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:07:51,947 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 05:07:51,961 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c[596,609] [2021-08-26 05:07:51,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:07:52,029 INFO L208 MainTranslator]: Completed translation [2021-08-26 05:07:52,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:07:52 WrapperNode [2021-08-26 05:07:52,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 05:07:52,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 05:07:52,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 05:07:52,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 05:07:52,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:07:52" (1/1) ... [2021-08-26 05:07:52,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:07:52" (1/1) ... [2021-08-26 05:07:52,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 05:07:52,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 05:07:52,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 05:07:52,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 05:07:52,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:07:52" (1/1) ... [2021-08-26 05:07:52,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:07:52" (1/1) ... [2021-08-26 05:07:52,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:07:52" (1/1) ... [2021-08-26 05:07:52,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:07:52" (1/1) ... [2021-08-26 05:07:52,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:07:52" (1/1) ... [2021-08-26 05:07:52,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:07:52" (1/1) ... [2021-08-26 05:07:52,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:07:52" (1/1) ... [2021-08-26 05:07:52,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 05:07:52,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 05:07:52,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 05:07:52,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 05:07:52,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:07:52" (1/1) ... [2021-08-26 05:07:52,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:07:52,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:07:52,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 05:07:52,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 05:07:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 05:07:52,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_short [2021-08-26 05:07:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 05:07:52,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 05:07:52,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 05:07:52,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 05:07:52,537 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2021-08-26 05:07:52,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:07:52 BoogieIcfgContainer [2021-08-26 05:07:52,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 05:07:52,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 05:07:52,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 05:07:52,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 05:07:52,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 05:07:51" (1/3) ... [2021-08-26 05:07:52,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7c0c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:07:52, skipping insertion in model container [2021-08-26 05:07:52,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:07:52" (2/3) ... [2021-08-26 05:07:52,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7c0c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:07:52, skipping insertion in model container [2021-08-26 05:07:52,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:07:52" (3/3) ... [2021-08-26 05:07:52,545 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound2.c [2021-08-26 05:07:52,549 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 05:07:52,549 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-26 05:07:52,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 05:07:52,589 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 05:07:52,589 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-26 05:07:52,600 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 52 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:52,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 05:07:52,604 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:07:52,604 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:07:52,605 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:07:52,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:07:52,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-26 05:07:52,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:07:52,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275885961] [2021-08-26 05:07:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:52,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:07:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:07:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:07:52,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:07:52,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275885961] [2021-08-26 05:07:52,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275885961] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:07:52,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:07:52,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 05:07:52,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186648460] [2021-08-26 05:07:52,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 05:07:52,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:07:52,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 05:07:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:07:52,750 INFO L87 Difference]: Start difference. First operand has 53 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 52 states have internal predecessors, (67), 0 states have call successors, (0), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:52,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:07:52,764 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2021-08-26 05:07:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 05:07:52,765 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-08-26 05:07:52,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:07:52,771 INFO L225 Difference]: With dead ends: 103 [2021-08-26 05:07:52,771 INFO L226 Difference]: Without dead ends: 49 [2021-08-26 05:07:52,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:07:52,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-26 05:07:52,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-26 05:07:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 48 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 05:07:52,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-08-26 05:07:52,798 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 7 [2021-08-26 05:07:52,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:07:52,799 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-08-26 05:07:52,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:52,799 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-08-26 05:07:52,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 05:07:52,799 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:07:52,800 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:07:52,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 05:07:52,800 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:07:52,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:07:52,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-26 05:07:52,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:07:52,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396629746] [2021-08-26 05:07:52,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:52,802 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:07:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:07:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:07:52,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:07:52,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396629746] [2021-08-26 05:07:52,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396629746] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:07:52,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:07:52,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:07:52,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129551307] [2021-08-26 05:07:52,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:07:52,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:07:52,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:07:52,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:07:52,904 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:07:53,003 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-08-26 05:07:53,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:07:53,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-08-26 05:07:53,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:07:53,004 INFO L225 Difference]: With dead ends: 50 [2021-08-26 05:07:53,005 INFO L226 Difference]: Without dead ends: 46 [2021-08-26 05:07:53,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:07:53,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-26 05:07:53,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-08-26 05:07:53,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 36 states have (on average 1.25) internal successors, (45), 44 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-08-26 05:07:53,011 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 7 [2021-08-26 05:07:53,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:07:53,012 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-08-26 05:07:53,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:53,012 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-08-26 05:07:53,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 05:07:53,013 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:07:53,013 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:07:53,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 05:07:53,014 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:07:53,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:07:53,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-08-26 05:07:53,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:07:53,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779786673] [2021-08-26 05:07:53,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:53,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:07:53,027 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:07:53,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427867373] [2021-08-26 05:07:53,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:53,028 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:53,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:07:53,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:07:53,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 05:07:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:07:53,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 05:07:53,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:07:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:07:53,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:07:53,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779786673] [2021-08-26 05:07:53,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:07:53,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427867373] [2021-08-26 05:07:53,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427867373] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:07:53,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:07:53,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:07:53,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059072484] [2021-08-26 05:07:53,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:07:53,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:07:53,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:07:53,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:07:53,230 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:53,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:07:53,390 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-08-26 05:07:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:07:53,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-08-26 05:07:53,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:07:53,392 INFO L225 Difference]: With dead ends: 86 [2021-08-26 05:07:53,392 INFO L226 Difference]: Without dead ends: 84 [2021-08-26 05:07:53,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:07:53,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-26 05:07:53,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2021-08-26 05:07:53,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.225) internal successors, (49), 48 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 05:07:53,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-08-26 05:07:53,400 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-08-26 05:07:53,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:07:53,400 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-08-26 05:07:53,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:53,400 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-08-26 05:07:53,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 05:07:53,401 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:07:53,401 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:07:53,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 05:07:53,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:53,625 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:07:53,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:07:53,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-08-26 05:07:53,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:07:53,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510455879] [2021-08-26 05:07:53,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:53,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:07:53,638 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:07:53,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437043318] [2021-08-26 05:07:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:53,638 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:53,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:07:53,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:07:53,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 05:07:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:07:53,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 05:07:53,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:07:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:07:53,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:07:53,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510455879] [2021-08-26 05:07:53,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:07:53,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437043318] [2021-08-26 05:07:53,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437043318] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:07:53,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:07:53,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:07:53,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855765839] [2021-08-26 05:07:53,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:07:53,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:07:53,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:07:53,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:07:53,825 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:53,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:07:53,948 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-08-26 05:07:53,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:07:53,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 05:07:53,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:07:53,950 INFO L225 Difference]: With dead ends: 84 [2021-08-26 05:07:53,950 INFO L226 Difference]: Without dead ends: 80 [2021-08-26 05:07:53,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:07:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-26 05:07:53,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-08-26 05:07:53,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:53,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-08-26 05:07:53,974 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 11 [2021-08-26 05:07:53,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:07:53,974 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-08-26 05:07:53,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:53,974 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-08-26 05:07:53,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 05:07:53,975 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:07:53,975 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:07:54,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 05:07:54,175 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,SelfDestructingSolverStorable3 [2021-08-26 05:07:54,176 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:07:54,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:07:54,176 INFO L82 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2021-08-26 05:07:54,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:07:54,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676736406] [2021-08-26 05:07:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:54,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:07:54,187 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:07:54,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581080071] [2021-08-26 05:07:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:54,188 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:54,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:07:54,193 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:07:54,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 05:07:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:07:54,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 05:07:54,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:07:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:07:54,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:07:54,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676736406] [2021-08-26 05:07:54,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:07:54,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581080071] [2021-08-26 05:07:54,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581080071] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:07:54,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:07:54,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:07:54,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558089625] [2021-08-26 05:07:54,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:07:54,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:07:54,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:07:54,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:07:54,375 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:54,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:07:54,483 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-08-26 05:07:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 05:07:54,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-26 05:07:54,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:07:54,487 INFO L225 Difference]: With dead ends: 81 [2021-08-26 05:07:54,487 INFO L226 Difference]: Without dead ends: 57 [2021-08-26 05:07:54,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:07:54,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-08-26 05:07:54,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-08-26 05:07:54,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 55 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 05:07:54,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-08-26 05:07:54,499 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 13 [2021-08-26 05:07:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:07:54,500 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-08-26 05:07:54,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:54,500 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-08-26 05:07:54,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 05:07:54,501 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:07:54,501 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:07:54,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 05:07:54,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:54,709 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:07:54,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:07:54,710 INFO L82 PathProgramCache]: Analyzing trace with hash 41188983, now seen corresponding path program 1 times [2021-08-26 05:07:54,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:07:54,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267955610] [2021-08-26 05:07:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:54,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:07:54,722 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:07:54,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313482826] [2021-08-26 05:07:54,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:54,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:54,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:07:54,725 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:07:54,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 05:07:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:07:54,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 05:07:54,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:07:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:07:55,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:07:55,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267955610] [2021-08-26 05:07:55,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:07:55,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313482826] [2021-08-26 05:07:55,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313482826] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:07:55,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:07:55,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 05:07:55,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043773124] [2021-08-26 05:07:55,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:07:55,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:07:55,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:07:55,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:07:55,058 INFO L87 Difference]: Start difference. First operand 56 states and 56 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 05:07:55,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:07:55,185 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2021-08-26 05:07:55,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:07:55,185 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 05:07:55,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:07:55,190 INFO L225 Difference]: With dead ends: 97 [2021-08-26 05:07:55,190 INFO L226 Difference]: Without dead ends: 95 [2021-08-26 05:07:55,191 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:07:55,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-08-26 05:07:55,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 60. [2021-08-26 05:07:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 59 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-08-26 05:07:55,207 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 20 [2021-08-26 05:07:55,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:07:55,207 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-08-26 05:07:55,208 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 05:07:55,208 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-08-26 05:07:55,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 05:07:55,208 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:07:55,208 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:07:55,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 05:07:55,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:55,412 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:07:55,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:07:55,412 INFO L82 PathProgramCache]: Analyzing trace with hash 928063098, now seen corresponding path program 1 times [2021-08-26 05:07:55,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:07:55,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430782721] [2021-08-26 05:07:55,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:55,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:07:55,421 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:07:55,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1113461478] [2021-08-26 05:07:55,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:55,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:55,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:07:55,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:07:55,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 05:07:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:07:55,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 05:07:55,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:07:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:07:55,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:07:55,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430782721] [2021-08-26 05:07:55,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:07:55,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113461478] [2021-08-26 05:07:55,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113461478] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:07:55,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:07:55,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 05:07:55,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854351722] [2021-08-26 05:07:55,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:07:55,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:07:55,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:07:55,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:07:55,753 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:55,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:07:55,866 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2021-08-26 05:07:55,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:07:55,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-26 05:07:55,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:07:55,867 INFO L225 Difference]: With dead ends: 95 [2021-08-26 05:07:55,867 INFO L226 Difference]: Without dead ends: 93 [2021-08-26 05:07:55,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.0ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:07:55,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-26 05:07:55,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 62. [2021-08-26 05:07:55,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.169811320754717) internal successors, (62), 61 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-08-26 05:07:55,874 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 22 [2021-08-26 05:07:55,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:07:55,874 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-08-26 05:07:55,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:55,874 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-08-26 05:07:55,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-26 05:07:55,875 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:07:55,875 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:07:55,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 05:07:56,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:56,085 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:07:56,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:07:56,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1484403939, now seen corresponding path program 1 times [2021-08-26 05:07:56,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:07:56,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90030619] [2021-08-26 05:07:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:56,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:07:56,095 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:07:56,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167353070] [2021-08-26 05:07:56,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:56,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:56,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:07:56,111 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:07:56,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 05:07:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:07:56,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 05:07:56,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:07:56,455 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 05:07:56,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:07:56,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90030619] [2021-08-26 05:07:56,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:07:56,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167353070] [2021-08-26 05:07:56,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167353070] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:07:56,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:07:56,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 05:07:56,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433766608] [2021-08-26 05:07:56,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:07:56,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:07:56,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:07:56,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:07:56,459 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:56,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:07:56,564 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2021-08-26 05:07:56,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:07:56,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-08-26 05:07:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:07:56,565 INFO L225 Difference]: With dead ends: 93 [2021-08-26 05:07:56,565 INFO L226 Difference]: Without dead ends: 87 [2021-08-26 05:07:56,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:07:56,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-08-26 05:07:56,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2021-08-26 05:07:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 76 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:56,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-08-26 05:07:56,572 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 24 [2021-08-26 05:07:56,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:07:56,572 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-08-26 05:07:56,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:56,572 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-08-26 05:07:56,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 05:07:56,573 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:07:56,573 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:07:56,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 05:07:56,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:56,789 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:07:56,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:07:56,789 INFO L82 PathProgramCache]: Analyzing trace with hash -582886304, now seen corresponding path program 1 times [2021-08-26 05:07:56,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:07:56,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015491107] [2021-08-26 05:07:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:56,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:07:56,800 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:07:56,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935959782] [2021-08-26 05:07:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:56,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:56,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:07:56,801 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:07:56,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-26 05:07:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:07:56,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-26 05:07:56,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:07:57,165 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 05:07:57,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:07:57,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015491107] [2021-08-26 05:07:57,165 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:07:57,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935959782] [2021-08-26 05:07:57,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935959782] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:07:57,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:07:57,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 05:07:57,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199199027] [2021-08-26 05:07:57,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 05:07:57,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:07:57,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 05:07:57,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:07:57,167 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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 05:07:57,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:07:57,280 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2021-08-26 05:07:57,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 05:07:57,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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 05:07:57,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:07:57,281 INFO L225 Difference]: With dead ends: 88 [2021-08-26 05:07:57,281 INFO L226 Difference]: Without dead ends: 82 [2021-08-26 05:07:57,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:07:57,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-08-26 05:07:57,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2021-08-26 05:07:57,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 74 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2021-08-26 05:07:57,290 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 26 [2021-08-26 05:07:57,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:07:57,291 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2021-08-26 05:07:57,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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 05:07:57,291 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2021-08-26 05:07:57,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 05:07:57,292 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:07:57,292 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:07:57,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-26 05:07:57,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:57,510 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:07:57,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:07:57,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1813911283, now seen corresponding path program 1 times [2021-08-26 05:07:57,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:07:57,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604438599] [2021-08-26 05:07:57,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:57,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:07:57,519 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:07:57,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34079821] [2021-08-26 05:07:57,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:57,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:57,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:07:57,528 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:07:57,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-26 05:07:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:07:57,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 05:07:57,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:07:58,101 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 05:07:58,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:07:58,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604438599] [2021-08-26 05:07:58,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:07:58,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34079821] [2021-08-26 05:07:58,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34079821] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:07:58,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:07:58,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 05:07:58,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911721327] [2021-08-26 05:07:58,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:07:58,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:07:58,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:07:58,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:07:58,104 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:58,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:07:58,259 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-08-26 05:07:58,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:07:58,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-08-26 05:07:58,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:07:58,261 INFO L225 Difference]: With dead ends: 81 [2021-08-26 05:07:58,261 INFO L226 Difference]: Without dead ends: 79 [2021-08-26 05:07:58,261 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 70.7ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:07:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-08-26 05:07:58,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2021-08-26 05:07:58,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.1666666666666667) internal successors, (77), 74 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2021-08-26 05:07:58,266 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 31 [2021-08-26 05:07:58,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:07:58,267 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2021-08-26 05:07:58,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:58,267 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2021-08-26 05:07:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-26 05:07:58,268 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:07:58,268 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-26 05:07:58,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-26 05:07:58,491 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,SelfDestructingSolverStorable9 [2021-08-26 05:07:58,491 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:07:58,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:07:58,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1811048370, now seen corresponding path program 2 times [2021-08-26 05:07:58,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:07:58,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055867371] [2021-08-26 05:07:58,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:58,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:07:58,501 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:07:58,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190016795] [2021-08-26 05:07:58,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:07:58,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:58,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:07:58,505 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:07:58,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-26 05:07:58,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:07:58,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:07:58,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-26 05:07:58,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:07:59,043 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:07:59,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:07:59,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055867371] [2021-08-26 05:07:59,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:07:59,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190016795] [2021-08-26 05:07:59,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190016795] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:07:59,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:07:59,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 05:07:59,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848276627] [2021-08-26 05:07:59,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:07:59,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:07:59,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:07:59,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:07:59,046 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:59,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:07:59,213 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2021-08-26 05:07:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:07:59,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-08-26 05:07:59,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:07:59,215 INFO L225 Difference]: With dead ends: 120 [2021-08-26 05:07:59,215 INFO L226 Difference]: Without dead ends: 118 [2021-08-26 05:07:59,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:07:59,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-08-26 05:07:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 79. [2021-08-26 05:07:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 78 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2021-08-26 05:07:59,220 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 31 [2021-08-26 05:07:59,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:07:59,221 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2021-08-26 05:07:59,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:07:59,221 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2021-08-26 05:07:59,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 05:07:59,222 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:07:59,222 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:07:59,248 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 05:07:59,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:59,437 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:07:59,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:07:59,437 INFO L82 PathProgramCache]: Analyzing trace with hash -587821098, now seen corresponding path program 1 times [2021-08-26 05:07:59,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:07:59,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260807934] [2021-08-26 05:07:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:59,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:07:59,446 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:07:59,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773801328] [2021-08-26 05:07:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:07:59,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:07:59,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:07:59,447 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:07:59,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-26 05:07:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:07:59,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-26 05:07:59,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:08:00,716 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 05:08:00,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:08:00,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260807934] [2021-08-26 05:08:00,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:08:00,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773801328] [2021-08-26 05:08:00,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773801328] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:08:00,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:08:00,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 05:08:00,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829765829] [2021-08-26 05:08:00,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:08:00,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:08:00,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:08:00,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:08:00,719 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:08:01,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:08:01,117 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-08-26 05:08:01,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:08:01,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-26 05:08:01,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:08:01,118 INFO L225 Difference]: With dead ends: 83 [2021-08-26 05:08:01,118 INFO L226 Difference]: Without dead ends: 81 [2021-08-26 05:08:01,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 138.5ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:08:01,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-08-26 05:08:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2021-08-26 05:08:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 78 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:08:01,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2021-08-26 05:08:01,125 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 33 [2021-08-26 05:08:01,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:08:01,125 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2021-08-26 05:08:01,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:08:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2021-08-26 05:08:01,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-26 05:08:01,126 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:08:01,127 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-26 05:08:01,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-08-26 05:08:01,349 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,SelfDestructingSolverStorable11 [2021-08-26 05:08:01,349 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:08:01,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:08:01,349 INFO L82 PathProgramCache]: Analyzing trace with hash 955884789, now seen corresponding path program 2 times [2021-08-26 05:08:01,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:08:01,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336736731] [2021-08-26 05:08:01,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:08:01,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:08:01,358 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:08:01,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1605749935] [2021-08-26 05:08:01,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:08:01,358 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:08:01,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:08:01,359 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:08:01,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-26 05:08:01,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:08:01,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:08:01,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 05:08:01,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:08:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:08:02,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:08:02,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336736731] [2021-08-26 05:08:02,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:08:02,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605749935] [2021-08-26 05:08:02,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605749935] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:08:02,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:08:02,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-08-26 05:08:02,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912391801] [2021-08-26 05:08:02,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:08:02,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:08:02,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:08:02,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:08:02,165 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:08:02,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:08:02,533 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2021-08-26 05:08:02,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 05:08:02,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-26 05:08:02,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:08:02,534 INFO L225 Difference]: With dead ends: 117 [2021-08-26 05:08:02,534 INFO L226 Difference]: Without dead ends: 115 [2021-08-26 05:08:02,534 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 164.3ms TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:08:02,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-26 05:08:02,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2021-08-26 05:08:02,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 72 states have (on average 1.1388888888888888) internal successors, (82), 80 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:08:02,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2021-08-26 05:08:02,542 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 33 [2021-08-26 05:08:02,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:08:02,542 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2021-08-26 05:08:02,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:08:02,542 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2021-08-26 05:08:02,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-26 05:08:02,543 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:08:02,543 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:08:02,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-26 05:08:02,759 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,SelfDestructingSolverStorable12 [2021-08-26 05:08:02,759 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:08:02,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:08:02,760 INFO L82 PathProgramCache]: Analyzing trace with hash 2039766361, now seen corresponding path program 1 times [2021-08-26 05:08:02,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:08:02,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94751555] [2021-08-26 05:08:02,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:08:02,760 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:08:02,767 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:08:02,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194180467] [2021-08-26 05:08:02,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:08:02,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:08:02,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:08:02,778 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:08:02,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-26 05:08:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:08:03,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-26 05:08:03,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:08:03,928 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 05:08:03,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:08:03,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94751555] [2021-08-26 05:08:03,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:08:03,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194180467] [2021-08-26 05:08:03,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194180467] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:08:03,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:08:03,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 05:08:03,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414498474] [2021-08-26 05:08:03,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 05:08:03,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:08:03,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 05:08:03,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:08:03,930 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 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 05:08:04,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:08:04,338 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-08-26 05:08:04,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:08:04,339 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 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 05:08:04,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:08:04,339 INFO L225 Difference]: With dead ends: 83 [2021-08-26 05:08:04,339 INFO L226 Difference]: Without dead ends: 73 [2021-08-26 05:08:04,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 332.8ms TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2021-08-26 05:08:04,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-26 05:08:04,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-08-26 05:08:04,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.140625) internal successors, (73), 72 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:08:04,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2021-08-26 05:08:04,347 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 35 [2021-08-26 05:08:04,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:08:04,348 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2021-08-26 05:08:04,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 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 05:08:04,348 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2021-08-26 05:08:04,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-26 05:08:04,353 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:08:04,353 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-26 05:08:04,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-26 05:08:04,577 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,SelfDestructingSolverStorable13 [2021-08-26 05:08:04,577 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:08:04,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:08:04,577 INFO L82 PathProgramCache]: Analyzing trace with hash -517562664, now seen corresponding path program 2 times [2021-08-26 05:08:04,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:08:04,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092970555] [2021-08-26 05:08:04,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:08:04,578 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:08:04,592 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:08:04,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388608596] [2021-08-26 05:08:04,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:08:04,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:08:04,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:08:04,593 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:08:04,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-26 05:08:04,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-26 05:08:04,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:08:04,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-26 05:08:04,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:08:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-26 05:08:09,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:08:09,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092970555] [2021-08-26 05:08:09,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:08:09,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388608596] [2021-08-26 05:08:09,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388608596] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:08:09,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:08:09,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-26 05:08:09,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103988567] [2021-08-26 05:08:09,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-26 05:08:09,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:08:09,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-26 05:08:09,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:08:09,830 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:08:43,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:08:43,293 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2021-08-26 05:08:43,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-26 05:08:43,294 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-08-26 05:08:43,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:08:43,294 INFO L225 Difference]: With dead ends: 73 [2021-08-26 05:08:43,294 INFO L226 Difference]: Without dead ends: 67 [2021-08-26 05:08:43,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 9815.3ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-08-26 05:08:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-08-26 05:08:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-08-26 05:08:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 61 states have (on average 1.098360655737705) internal successors, (67), 66 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:08:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2021-08-26 05:08:43,303 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 35 [2021-08-26 05:08:43,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:08:43,303 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2021-08-26 05:08:43,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:08:43,303 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2021-08-26 05:08:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-26 05:08:43,304 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:08:43,304 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:08:43,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-26 05:08:43,528 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,SelfDestructingSolverStorable14 [2021-08-26 05:08:43,528 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:08:43,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:08:43,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1745507624, now seen corresponding path program 2 times [2021-08-26 05:08:43,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:08:43,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547864629] [2021-08-26 05:08:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:08:43,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:08:43,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:08:43,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490382296] [2021-08-26 05:08:43,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 05:08:43,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:08:43,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:08:43,537 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:08:43,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-26 05:08:44,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 05:08:44,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:08:44,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 48 conjunts are in the unsatisfiable core [2021-08-26 05:08:44,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:08:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:08:44,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:08:44,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547864629] [2021-08-26 05:08:44,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:08:44,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490382296] [2021-08-26 05:08:44,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490382296] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:08:44,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:08:44,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-08-26 05:08:44,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732176601] [2021-08-26 05:08:44,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-26 05:08:44,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:08:44,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-26 05:08:44,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-08-26 05:08:44,844 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:08:45,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:08:45,247 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2021-08-26 05:08:45,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 05:08:45,248 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-26 05:08:45,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:08:45,248 INFO L225 Difference]: With dead ends: 93 [2021-08-26 05:08:45,248 INFO L226 Difference]: Without dead ends: 73 [2021-08-26 05:08:45,249 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 171.1ms TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-08-26 05:08:45,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-26 05:08:45,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2021-08-26 05:08:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 66 states have (on average 1.0909090909090908) internal successors, (72), 71 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:08:45,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-08-26 05:08:45,256 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 42 [2021-08-26 05:08:45,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:08:45,257 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-08-26 05:08:45,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:08:45,257 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-08-26 05:08:45,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-26 05:08:45,257 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:08:45,257 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-08-26 05:08:45,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-26 05:08:45,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:08:45,461 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:08:45,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:08:45,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1748370537, now seen corresponding path program 3 times [2021-08-26 05:08:45,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:08:45,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268009372] [2021-08-26 05:08:45,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:08:45,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:08:45,473 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:08:45,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1383519748] [2021-08-26 05:08:45,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:08:45,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:08:45,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:08:45,474 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:08:45,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-26 05:08:45,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 05:08:45,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:08:45,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-26 05:08:45,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:08:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-26 05:08:46,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:08:46,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268009372] [2021-08-26 05:08:46,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:08:46,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383519748] [2021-08-26 05:08:46,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383519748] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:08:46,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:08:46,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-08-26 05:08:46,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345856792] [2021-08-26 05:08:46,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 05:08:46,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:08:46,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 05:08:46,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:08:46,397 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:09:23,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:09:23,188 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-08-26 05:09:23,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 05:09:23,188 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-08-26 05:09:23,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:09:23,189 INFO L225 Difference]: With dead ends: 72 [2021-08-26 05:09:23,189 INFO L226 Difference]: Without dead ends: 70 [2021-08-26 05:09:23,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 714.0ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-08-26 05:09:23,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-08-26 05:09:23,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-08-26 05:09:23,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 69 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:09:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-08-26 05:09:23,210 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 42 [2021-08-26 05:09:23,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:09:23,211 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-08-26 05:09:23,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:09:23,211 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-08-26 05:09:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-26 05:09:23,212 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:09:23,212 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-08-26 05:09:23,250 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 05:09:23,424 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,SelfDestructingSolverStorable16 [2021-08-26 05:09:23,425 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:09:23,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:09:23,425 INFO L82 PathProgramCache]: Analyzing trace with hash -851717222, now seen corresponding path program 3 times [2021-08-26 05:09:23,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:09:23,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030675863] [2021-08-26 05:09:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:09:23,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:09:23,432 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:09:23,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [372187805] [2021-08-26 05:09:23,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:09:23,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:09:23,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:09:23,434 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:09:23,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-26 05:09:24,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 05:09:24,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:09:24,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 47 conjunts are in the unsatisfiable core [2021-08-26 05:09:24,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:09:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-26 05:09:25,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:09:25,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030675863] [2021-08-26 05:09:25,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:09:25,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372187805] [2021-08-26 05:09:25,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372187805] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:09:25,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:09:25,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-08-26 05:09:25,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383879137] [2021-08-26 05:09:25,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-26 05:09:25,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:09:25,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-26 05:09:25,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-08-26 05:09:25,718 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:09:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:09:36,197 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2021-08-26 05:09:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 05:09:36,198 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-08-26 05:09:36,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:09:36,198 INFO L225 Difference]: With dead ends: 70 [2021-08-26 05:09:36,198 INFO L226 Difference]: Without dead ends: 58 [2021-08-26 05:09:36,199 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2553.0ms TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-08-26 05:09:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-26 05:09:36,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-08-26 05:09:36,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 57 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:09:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-08-26 05:09:36,209 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 44 [2021-08-26 05:09:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:09:36,209 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-08-26 05:09:36,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:09:36,209 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-08-26 05:09:36,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-08-26 05:09:36,209 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:09:36,210 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:09:36,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-26 05:09:36,410 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,SelfDestructingSolverStorable17 [2021-08-26 05:09:36,410 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-26 05:09:36,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:09:36,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1402807763, now seen corresponding path program 3 times [2021-08-26 05:09:36,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:09:36,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374298884] [2021-08-26 05:09:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:09:36,411 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:09:36,433 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:09:36,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140635995] [2021-08-26 05:09:36,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-26 05:09:36,434 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:09:36,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:09:36,454 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:09:36,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-08-26 05:09:37,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-26 05:09:37,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 05:09:37,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-26 05:09:37,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:09:37,939 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-26 05:09:37,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:09:37,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374298884] [2021-08-26 05:09:37,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:09:37,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140635995] [2021-08-26 05:09:37,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140635995] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 05:09:37,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 05:09:37,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-08-26 05:09:37,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983533761] [2021-08-26 05:09:37,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-26 05:09:37,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:09:37,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-26 05:09:37,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:09:37,941 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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 05:09:38,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:09:38,581 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-08-26 05:09:38,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-26 05:09:38,582 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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 53 [2021-08-26 05:09:38,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:09:38,582 INFO L225 Difference]: With dead ends: 58 [2021-08-26 05:09:38,582 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 05:09:38,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 610.3ms TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-08-26 05:09:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 05:09:38,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 05:09:38,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:09:38,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 05:09:38,583 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2021-08-26 05:09:38,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:09:38,583 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 05:09:38,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 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 05:09:38,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 05:09:38,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 05:09:38,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:09:38,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:09:38,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:09:38,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:09:38,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:09:38,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:09:38,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:09:38,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:09:38,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:09:38,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:09:38,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:09:38,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-08-26 05:09:38,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:09:38,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 05:09:38,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:09:38,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:09:38,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:09:38,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:09:38,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:09:38,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:09:38,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:09:38,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:09:39,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:09:39,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:09:39,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:09:39,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:09:39,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:09:51,946 WARN L207 SmtUtils]: Spent 10.05 s on a formula simplification. DAG size of input: 143 DAG size of output: 40 [2021-08-26 05:10:03,855 WARN L207 SmtUtils]: Spent 10.19 s on a formula simplification. DAG size of input: 133 DAG size of output: 44 [2021-08-26 05:10:04,986 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:04,987 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:04,987 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-08-26 05:10:04,987 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:04,987 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 05:10:04,987 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 05:10:04,987 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-08-26 05:10:04,987 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:04,987 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:04,987 INFO L860 garLoopResultBuilder]: At program point L55(lines 22 56) the Hoare annotation is: true [2021-08-26 05:10:04,987 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:04,987 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:04,987 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse0 (* 18 ULTIMATE.start_main_~x~0)) (.cse1 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) .cse0) (+ .cse1 (* 2 ULTIMATE.start_main_~z~0))) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (= (+ 18 .cse0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)) (+ (* 8 ULTIMATE.start_main_~z~0) .cse1)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) [2021-08-26 05:10:04,987 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:04,988 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse0 (* 18 ULTIMATE.start_main_~x~0)) (.cse1 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) .cse0) (+ .cse1 (* 2 ULTIMATE.start_main_~z~0))) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (= (+ 18 .cse0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)) (+ (* 8 ULTIMATE.start_main_~z~0) .cse1)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) [2021-08-26 05:10:04,988 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:04,988 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (let ((.cse0 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse0 .cse0)) (* 3 .cse0) 1))) (= (mod (* ULTIMATE.start_main_~z~0 5) (- 6)) 0) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (= (+ 18 (* 18 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)) (+ (* 8 ULTIMATE.start_main_~z~0) (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-08-26 05:10:04,988 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:04,988 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (let ((.cse0 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse0 .cse0)) (* 3 .cse0) 1))) (= (mod (* ULTIMATE.start_main_~z~0 5) (- 6)) 0) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (= (+ 18 (* 18 ULTIMATE.start_main_~x~0) (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)) (+ (* 8 ULTIMATE.start_main_~z~0) (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-08-26 05:10:04,988 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:04,988 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 39 40) the Hoare annotation is: (let ((.cse0 (* 18 ULTIMATE.start_main_~x~0)) (.cse1 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) .cse0) (+ .cse1 (* 2 ULTIMATE.start_main_~z~0))) (= (mod (* ULTIMATE.start_main_~z~0 5) (- 6)) 0) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (= (+ 18 .cse0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)) (+ (* 8 ULTIMATE.start_main_~z~0) .cse1)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) [2021-08-26 05:10:04,988 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:04,988 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 05:10:04,989 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (<= 0 ULTIMATE.start_main_~a~0))) (or (let ((.cse2 (* 18 ULTIMATE.start_main_~x~0)) (.cse3 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) (and .cse0 (<= ULTIMATE.start_main_~n~0 3) (exists ((ULTIMATE.start_main_~n~0 Int)) (and (let ((.cse1 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (= 0 ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1))) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) (< ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~n~0))) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) .cse2) (+ .cse3 (* 2 ULTIMATE.start_main_~z~0))) (= (+ 18 .cse2 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)) (+ (* 8 ULTIMATE.start_main_~z~0) .cse3)) .cse4 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~y~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~n~0 0)) (and .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~y~0 7) (< ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~z~0 12) .cse4 (= ULTIMATE.start_main_~n~0 1)))) [2021-08-26 05:10:04,989 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:04,989 INFO L853 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (let ((.cse1 (* 18 ULTIMATE.start_main_~x~0)) (.cse2 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~n~0 3) (exists ((ULTIMATE.start_main_~n~0 Int)) (and (let ((.cse0 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (= 0 ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) (< ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~n~0))) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) .cse1) (+ .cse2 (* 2 ULTIMATE.start_main_~z~0))) (= (+ 18 .cse1 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)) (+ (* 8 ULTIMATE.start_main_~z~0) .cse2)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))))) [2021-08-26 05:10:04,989 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:04,990 INFO L857 garLoopResultBuilder]: For program point L15-21(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:04,990 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:04,990 INFO L853 garLoopResultBuilder]: At program point L15-23(lines 14 20) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (let ((.cse0 (* 18 ULTIMATE.start_main_~x~0)) (.cse1 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (<= ULTIMATE.start_main_~n~0 3) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) .cse0) (+ .cse1 (* 2 ULTIMATE.start_main_~z~0))) (= (+ 18 .cse0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)) (+ (* 8 ULTIMATE.start_main_~z~0) .cse1)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))))) [2021-08-26 05:10:04,990 INFO L857 garLoopResultBuilder]: For program point L15-24(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:04,991 INFO L853 garLoopResultBuilder]: At program point L15-26(lines 14 20) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (let ((.cse0 (* 18 ULTIMATE.start_main_~x~0)) (.cse1 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (<= ULTIMATE.start_main_~n~0 3) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) .cse0) (+ .cse1 (* 2 ULTIMATE.start_main_~z~0))) (= (+ 18 .cse0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)) (+ (* 8 ULTIMATE.start_main_~z~0) .cse1)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~y~0 7) (= ULTIMATE.start_main_~z~0 12) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~n~0 1))) [2021-08-26 05:10:04,991 INFO L857 garLoopResultBuilder]: For program point L15-27(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:04,991 INFO L853 garLoopResultBuilder]: At program point L15-29(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (= ULTIMATE.start_main_~x~0 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) .cse0) (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 12) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0) (let ((.cse1 (* 18 ULTIMATE.start_main_~x~0)) (.cse2 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (<= ULTIMATE.start_main_~n~0 3) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) .cse1) (+ .cse2 (* 2 ULTIMATE.start_main_~z~0))) (= (+ 18 .cse1 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)) (+ (* 8 ULTIMATE.start_main_~z~0) .cse2)) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))))) [2021-08-26 05:10:04,991 INFO L857 garLoopResultBuilder]: For program point L15-30(lines 15 18) no Hoare annotation was computed. [2021-08-26 05:10:04,991 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:04,991 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:04,991 INFO L860 garLoopResultBuilder]: At program point L15-32(lines 14 20) the Hoare annotation is: true [2021-08-26 05:10:04,991 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:04,992 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:04,992 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:04,992 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:04,992 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:04,992 INFO L857 garLoopResultBuilder]: For program point L16-7(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:04,992 INFO L857 garLoopResultBuilder]: For program point L16-8(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:04,992 INFO L857 garLoopResultBuilder]: For program point L16-9(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:04,992 INFO L857 garLoopResultBuilder]: For program point L16-10(lines 16 17) no Hoare annotation was computed. [2021-08-26 05:10:04,993 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 05:10:04,993 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:04,993 INFO L853 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse5 (* 18 ULTIMATE.start_main_~x~0)) (.cse6 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~a~0 2)) (.cse2 (= (+ 18 .cse5 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0)) (+ (* 8 ULTIMATE.start_main_~z~0) .cse6))) (.cse3 (<= 0 ULTIMATE.start_main_~a~0)) (.cse4 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) .cse4 (= ULTIMATE.start_main_~n~0 0)) (and .cse0 .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) .cse5) (+ .cse6 (* 2 ULTIMATE.start_main_~z~0))) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~a~0 1)) .cse2 .cse3 .cse4)))) [2021-08-26 05:10:04,993 INFO L857 garLoopResultBuilder]: For program point L33-3(lines 33 46) no Hoare annotation was computed. [2021-08-26 05:10:04,993 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:04,993 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 05:10:05,011 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 05:10:05,017 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,018 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,018 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,018 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,018 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,018 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,019 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,029 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,029 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,030 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,030 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,030 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,030 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,030 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,040 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,040 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,040 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,040 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,040 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,041 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,041 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,041 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 05:10:05 BoogieIcfgContainer [2021-08-26 05:10:05,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 05:10:05,046 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 05:10:05,046 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 05:10:05,046 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 05:10:05,047 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:07:52" (3/4) ... [2021-08-26 05:10:05,049 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 05:10:05,057 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-08-26 05:10:05,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 05:10:05,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:10:05,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:10:05,076 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((cond == 1 && n <= 3) && (\exists ULTIMATE.start_main_~n~0 : int :: ((((0 == cond && !(z == 6 * ULTIMATE.start_main_~n~0 + 6)) || (1 == cond && z == 6 * ULTIMATE.start_main_~n~0 + 6)) && ULTIMATE.start_main_~n~0 <= a + 1) && x == ULTIMATE.start_main_~n~0 * ULTIMATE.start_main_~n~0 * ULTIMATE.start_main_~n~0) && a < ULTIMATE.start_main_~n~0)) && 6 + 12 * y + 18 * x == z * y + 2 * z) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && x == n * n * n) || ((((x == 0 && y == 1) && !(0 == cond)) && z == 6 * n + 6) && n == 0)) || (((((((cond == 1 && 1 <= cond) && x == 1) && y == 7) && a < 1) && z == 12) && 0 <= a) && n == 1) [2021-08-26 05:10:05,077 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) || ((((((cond == 1 && n <= 3) && (\exists ULTIMATE.start_main_~n~0 : int :: ((((0 == cond && !(z == 6 * ULTIMATE.start_main_~n~0 + 6)) || (1 == cond && z == 6 * ULTIMATE.start_main_~n~0 + 6)) && ULTIMATE.start_main_~n~0 <= a + 1) && x == ULTIMATE.start_main_~n~0 * ULTIMATE.start_main_~n~0 * ULTIMATE.start_main_~n~0) && a < ULTIMATE.start_main_~n~0)) && 6 + 12 * y + 18 * x == z * y + 2 * z) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && x == n * n * n) [2021-08-26 05:10:05,094 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 05:10:05,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 05:10:05,095 INFO L168 Benchmark]: Toolchain (without parser) took 133299.80 ms. Allocated memory was 48.2 MB in the beginning and 182.5 MB in the end (delta: 134.2 MB). Free memory was 22.6 MB in the beginning and 122.5 MB in the end (delta: -99.9 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2021-08-26 05:10:05,095 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory is still 29.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:10:05,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.09 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.5 MB in the beginning and 41.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-08-26 05:10:05,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.21 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 40.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:10:05,096 INFO L168 Benchmark]: Boogie Preprocessor took 37.35 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 38.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:10:05,096 INFO L168 Benchmark]: RCFGBuilder took 422.13 ms. Allocated memory is still 58.7 MB. Free memory was 38.7 MB in the beginning and 34.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2021-08-26 05:10:05,097 INFO L168 Benchmark]: TraceAbstraction took 132504.98 ms. Allocated memory was 58.7 MB in the beginning and 182.5 MB in the end (delta: 123.7 MB). Free memory was 33.8 MB in the beginning and 126.7 MB in the end (delta: -92.9 MB). Peak memory consumption was 128.5 MB. Max. memory is 16.1 GB. [2021-08-26 05:10:05,097 INFO L168 Benchmark]: Witness Printer took 48.35 ms. Allocated memory is still 182.5 MB. Free memory was 126.7 MB in the beginning and 122.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 05:10:05,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory is still 29.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 234.09 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.5 MB in the beginning and 41.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.21 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 40.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.35 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 38.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 422.13 ms. Allocated memory is still 58.7 MB. Free memory was 38.7 MB in the beginning and 34.3 MB in the end (delta: 4.4 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 132504.98 ms. Allocated memory was 58.7 MB in the beginning and 182.5 MB in the end (delta: 123.7 MB). Free memory was 33.8 MB in the beginning and 126.7 MB in the end (delta: -92.9 MB). Peak memory consumption was 128.5 MB. Max. memory is 16.1 GB. * Witness Printer took 48.35 ms. Allocated memory is still 182.5 MB. Free memory was 126.7 MB in the beginning and 122.5 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.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] * 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 132415.1ms, OverallIterations: 19, TraceHistogramMax: 4, EmptinessCheckTime: 21.1ms, AutomataDifference: 84309.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 26198.9ms, InitialAbstractionConstructionTime: 7.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 550 SDtfs, 996 SDslu, 1182 SDs, 0 SdLazy, 2074 SolverSat, 445 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 71710.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 562 GetRequests, 401 SyntacticMatches, 1 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 14847.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=13, InterpolantAutomatonStates: 140, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 172.4ms AutomataMinimizationTime, 19 MinimizatonAttempts, 220 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 59 NumberOfFragments, 934 HoareAnnotationTreeSize, 13 FomulaSimplifications, 15647 FormulaSimplificationTreeSizeReduction, 286.1ms HoareSimplificationTime, 13 FomulaSimplificationsInter, 8057 FormulaSimplificationTreeSizeReductionInter, 25904.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 138.9ms SsaConstructionTime, 1305.8ms SatisfiabilityAnalysisTime, 12344.4ms InterpolantComputationTime, 518 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 499 ConstructedInterpolants, 1 QuantifiedInterpolants, 6284 SizeOfPredicates, 125 NumberOfNonLiveVariables, 1740 ConjunctsInSsa, 361 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 162/325 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 11 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant [2021-08-26 05:10:05,112 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,112 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,112 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,113 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,114 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,114 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,114 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,119 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,119 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,120 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,120 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,120 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,120 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,120 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] Derived loop invariant: (((((((cond == 1 && n <= 3) && (\exists ULTIMATE.start_main_~n~0 : int :: ((((0 == cond && !(z == 6 * ULTIMATE.start_main_~n~0 + 6)) || (1 == cond && z == 6 * ULTIMATE.start_main_~n~0 + 6)) && ULTIMATE.start_main_~n~0 <= a + 1) && x == ULTIMATE.start_main_~n~0 * ULTIMATE.start_main_~n~0 * ULTIMATE.start_main_~n~0) && a < ULTIMATE.start_main_~n~0)) && 6 + 12 * y + 18 * x == z * y + 2 * z) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && x == n * n * n) || ((((x == 0 && y == 1) && !(0 == cond)) && z == 6 * n + 6) && n == 0)) || (((((((cond == 1 && 1 <= cond) && x == 1) && y == 7) && a < 1) && z == 12) && 0 <= a) && n == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && z * 5 % -6 == 0) && n <= a + 1) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && x == n * n * n - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((cond == 1 && a <= 2) && 1 == cond) && 6 + 12 * y + 18 * x == z * y + 2 * z) && z * 5 % -6 == 0) && n <= a + 1) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && a <= 2) && 1 == cond) && 6 + 12 * y + 18 * x == z * y + 2 * z) && n <= a + 1) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && x == n * n * n - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((cond == 1 && a <= 2) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) && n == 0) || (((((((cond == 1 && a <= 2) && 1 == cond) && 6 + 12 * y + 18 * x == z * y + 2 * z) && n <= a + 1) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && x == n * n * n) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && a <= 2) && 1 == cond) && 6 + 12 * y + 18 * x == z * y + 2 * z) && n <= a + 1) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) || (((x == 1 && z == 12) && !(0 == cond)) && z == 6 * n + 6)) || (((((((cond == 1 && a <= 2) && n <= 3) && 1 == cond) && 6 + 12 * y + 18 * x == z * y + 2 * z) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && x == n * n * n) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2021-08-26 05:10:05,127 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,128 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,128 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,128 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,128 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,128 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,128 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,129 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,129 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,129 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,129 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,129 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,129 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] [2021-08-26 05:10:05,130 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0,QUANTIFIED] Derived loop invariant: ((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) || ((((((cond == 1 && n <= 3) && (\exists ULTIMATE.start_main_~n~0 : int :: ((((0 == cond && !(z == 6 * ULTIMATE.start_main_~n~0 + 6)) || (1 == cond && z == 6 * ULTIMATE.start_main_~n~0 + 6)) && ULTIMATE.start_main_~n~0 <= a + 1) && x == ULTIMATE.start_main_~n~0 * ULTIMATE.start_main_~n~0 * ULTIMATE.start_main_~n~0) && a < ULTIMATE.start_main_~n~0)) && 6 + 12 * y + 18 * x == z * y + 2 * z) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && x == n * n * n) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && z * 5 % -6 == 0) && n <= a + 1) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) || (((((((cond == 1 && a <= 2) && n <= 3) && 1 == cond) && 6 + 12 * y + 18 * x == z * y + 2 * z) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && x == n * n * n)) || ((((x == 1 && y == 7) && z == 12) && !(0 == cond)) && n == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) || (((((((cond == 1 && a <= 2) && n <= 3) && 1 == cond) && 6 + 12 * y + 18 * x == z * y + 2 * z) && 18 + 18 * x + z * z == 8 * z + z * y) && 0 <= a) && x == n * n * n) RESULT: Ultimate proved your program to be correct! [2021-08-26 05:10:05,155 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...