./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 5fbdf5bf 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-wip.dd.seqcomp-5fbdf5b [2021-08-29 12:05:34,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 12:05:34,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 12:05:34,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 12:05:34,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 12:05:34,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 12:05:34,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 12:05:34,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 12:05:34,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 12:05:34,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 12:05:34,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 12:05:34,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 12:05:34,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 12:05:34,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 12:05:34,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 12:05:34,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 12:05:34,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 12:05:34,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 12:05:34,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 12:05:34,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 12:05:34,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 12:05:34,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 12:05:34,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 12:05:34,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 12:05:34,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 12:05:34,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 12:05:34,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 12:05:34,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 12:05:34,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 12:05:34,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 12:05:34,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 12:05:34,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 12:05:34,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 12:05:34,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 12:05:34,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 12:05:34,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 12:05:34,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 12:05:34,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 12:05:34,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 12:05:34,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 12:05:34,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 12:05:34,689 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 12:05:34,750 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 12:05:34,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 12:05:34,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 12:05:34,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 12:05:34,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 12:05:34,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 12:05:34,753 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 12:05:34,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 12:05:34,754 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 12:05:34,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 12:05:34,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 12:05:34,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 12:05:34,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 12:05:34,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 12:05:34,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 12:05:34,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 12:05:34,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 12:05:34,755 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 12:05:34,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 12:05:34,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 12:05:34,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 12:05:34,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 12:05:34,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:05:34,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 12:05:34,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 12:05:34,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 12:05:34,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 12:05:34,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 12:05:34,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 12:05:34,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 12:05:34,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a538131f5f4e4e947f8035def161fb9074988eef [2021-08-29 12:05:34,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 12:05:35,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 12:05:35,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 12:05:35,018 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 12:05:35,019 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 12:05:35,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2021-08-29 12:05:35,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37c3bf126/3e10384edb324eb2a1f23541b7b54e80/FLAG229be8406 [2021-08-29 12:05:35,495 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 12:05:35,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound2.c [2021-08-29 12:05:35,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37c3bf126/3e10384edb324eb2a1f23541b7b54e80/FLAG229be8406 [2021-08-29 12:05:35,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37c3bf126/3e10384edb324eb2a1f23541b7b54e80 [2021-08-29 12:05:35,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 12:05:35,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 12:05:35,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 12:05:35,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 12:05:35,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 12:05:35,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:05:35" (1/1) ... [2021-08-29 12:05:35,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60735600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:05:35, skipping insertion in model container [2021-08-29 12:05:35,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 12:05:35" (1/1) ... [2021-08-29 12:05:35,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 12:05:35,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 12:05:35,647 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] [2021-08-29 12:05:35,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:05:35,667 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 12:05:35,679 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] [2021-08-29 12:05:35,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 12:05:35,738 INFO L208 MainTranslator]: Completed translation [2021-08-29 12:05:35,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:05:35 WrapperNode [2021-08-29 12:05:35,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 12:05:35,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 12:05:35,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 12:05:35,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 12:05:35,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:05:35" (1/1) ... [2021-08-29 12:05:35,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:05:35" (1/1) ... [2021-08-29 12:05:35,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 12:05:35,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 12:05:35,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 12:05:35,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 12:05:35,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:05:35" (1/1) ... [2021-08-29 12:05:35,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:05:35" (1/1) ... [2021-08-29 12:05:35,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:05:35" (1/1) ... [2021-08-29 12:05:35,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:05:35" (1/1) ... [2021-08-29 12:05:35,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:05:35" (1/1) ... [2021-08-29 12:05:35,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:05:35" (1/1) ... [2021-08-29 12:05:35,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:05:35" (1/1) ... [2021-08-29 12:05:35,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 12:05:35,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 12:05:35,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 12:05:35,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 12:05:35,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:05:35" (1/1) ... [2021-08-29 12:05:35,813 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 12:05:35,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:05:35,830 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) [2021-08-29 12:05:35,856 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 [2021-08-29 12:05:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 12:05:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_short [2021-08-29 12:05:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 12:05:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 12:05:35,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 12:05:36,011 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 12:05:36,011 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2021-08-29 12:05:36,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:05:36 BoogieIcfgContainer [2021-08-29 12:05:36,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 12:05:36,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 12:05:36,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 12:05:36,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 12:05:36,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 12:05:35" (1/3) ... [2021-08-29 12:05:36,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a63a266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:05:36, skipping insertion in model container [2021-08-29 12:05:36,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 12:05:35" (2/3) ... [2021-08-29 12:05:36,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a63a266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 12:05:36, skipping insertion in model container [2021-08-29 12:05:36,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:05:36" (3/3) ... [2021-08-29 12:05:36,021 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound2.c [2021-08-29 12:05:36,025 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 12:05:36,025 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-08-29 12:05:36,059 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 12:05:36,063 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 [2021-08-29 12:05:36,063 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-29 12:05:36,072 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) [2021-08-29 12:05:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 12:05:36,075 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:05:36,075 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:05:36,076 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)] === [2021-08-29 12:05:36,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:05:36,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-29 12:05:36,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:05:36,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364228090] [2021-08-29 12:05:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:36,091 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:05:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:05:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:36,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:05:36,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364228090] [2021-08-29 12:05:36,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364228090] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:05:36,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:05:36,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 12:05:36,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428687108] [2021-08-29 12:05:36,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 12:05:36,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:05:36,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 12:05:36,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:05:36,262 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) [2021-08-29 12:05:36,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:05:36,385 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2021-08-29 12:05:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 12:05:36,387 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 [2021-08-29 12:05:36,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:05:36,392 INFO L225 Difference]: With dead ends: 103 [2021-08-29 12:05:36,392 INFO L226 Difference]: Without dead ends: 49 [2021-08-29 12:05:36,394 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 12:05:36,400 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.39ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.21ms IncrementalHoareTripleChecker+Time [2021-08-29 12:05:36,401 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.39ms Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 110.21ms Time] [2021-08-29 12:05:36,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-29 12:05:36,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-29 12:05:36,421 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) [2021-08-29 12:05:36,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-08-29 12:05:36,422 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 7 [2021-08-29 12:05:36,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:05:36,423 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-08-29 12:05:36,423 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) [2021-08-29 12:05:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-08-29 12:05:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 12:05:36,423 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:05:36,424 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:05:36,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 12:05:36,424 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)] === [2021-08-29 12:05:36,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:05:36,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-29 12:05:36,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:05:36,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693916126] [2021-08-29 12:05:36,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:36,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:05:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:05:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:36,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:05:36,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693916126] [2021-08-29 12:05:36,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693916126] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:05:36,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:05:36,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:05:36,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124967416] [2021-08-29 12:05:36,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:05:36,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:05:36,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:05:36,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:05:36,509 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) [2021-08-29 12:05:36,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:05:36,617 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-08-29 12:05:36,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:05:36,617 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 [2021-08-29 12:05:36,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:05:36,618 INFO L225 Difference]: With dead ends: 50 [2021-08-29 12:05:36,618 INFO L226 Difference]: Without dead ends: 46 [2021-08-29 12:05:36,618 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:05:36,619 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.78ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.59ms IncrementalHoareTripleChecker+Time [2021-08-29 12:05:36,619 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 102 Unknown, 0 Unchecked, 1.78ms Time], IncrementalHoareTripleChecker [22 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 90.59ms Time] [2021-08-29 12:05:36,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-29 12:05:36,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-08-29 12:05:36,637 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) [2021-08-29 12:05:36,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-08-29 12:05:36,637 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 7 [2021-08-29 12:05:36,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:05:36,638 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-08-29 12:05:36,638 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) [2021-08-29 12:05:36,638 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-08-29 12:05:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 12:05:36,638 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:05:36,638 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:05:36,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 12:05:36,638 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)] === [2021-08-29 12:05:36,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:05:36,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-08-29 12:05:36,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:05:36,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758098300] [2021-08-29 12:05:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:36,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:05:36,664 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:05:36,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648359014] [2021-08-29 12:05:36,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:36,666 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:05:36,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:05:36,667 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) [2021-08-29 12:05:36,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 12:05:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:05:36,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 12:05:36,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:05:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:36,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:05:36,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:05:36,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758098300] [2021-08-29 12:05:36,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:05:36,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648359014] [2021-08-29 12:05:36,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648359014] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:05:36,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:05:36,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:05:36,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692671169] [2021-08-29 12:05:36,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:05:36,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:05:36,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:05:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:05:36,820 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) [2021-08-29 12:05:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:05:36,950 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-08-29 12:05:36,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:05:36,951 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 [2021-08-29 12:05:36,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:05:36,951 INFO L225 Difference]: With dead ends: 86 [2021-08-29 12:05:36,952 INFO L226 Difference]: Without dead ends: 84 [2021-08-29 12:05:36,952 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.23ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:05:36,953 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 36 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.47ms IncrementalHoareTripleChecker+Time [2021-08-29 12:05:36,953 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 0 Invalid, 135 Unknown, 0 Unchecked, 1.15ms Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 110.47ms Time] [2021-08-29 12:05:36,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-08-29 12:05:36,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2021-08-29 12:05:36,958 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) [2021-08-29 12:05:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-08-29 12:05:36,959 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 9 [2021-08-29 12:05:36,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:05:36,960 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-08-29 12:05:36,960 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) [2021-08-29 12:05:36,960 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-08-29 12:05:36,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 12:05:36,960 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:05:36,960 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:05:36,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-08-29 12:05:37,178 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 [2021-08-29 12:05:37,178 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)] === [2021-08-29 12:05:37,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:05:37,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-08-29 12:05:37,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:05:37,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244110712] [2021-08-29 12:05:37,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:37,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:05:37,188 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:05:37,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701040168] [2021-08-29 12:05:37,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:37,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:05:37,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:05:37,195 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) [2021-08-29 12:05:37,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 12:05:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:05:37,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 12:05:37,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:05:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:37,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:05:37,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:05:37,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244110712] [2021-08-29 12:05:37,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:05:37,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701040168] [2021-08-29 12:05:37,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701040168] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:05:37,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:05:37,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:05:37,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411224750] [2021-08-29 12:05:37,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:05:37,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:05:37,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:05:37,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:05:37,319 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) [2021-08-29 12:05:37,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:05:37,469 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-08-29 12:05:37,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 12:05:37,470 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 [2021-08-29 12:05:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:05:37,474 INFO L225 Difference]: With dead ends: 84 [2021-08-29 12:05:37,474 INFO L226 Difference]: Without dead ends: 80 [2021-08-29 12:05:37,476 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.13ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:05:37,478 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.95ms IncrementalHoareTripleChecker+Time [2021-08-29 12:05:37,478 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 137 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 116.95ms Time] [2021-08-29 12:05:37,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-08-29 12:05:37,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-08-29 12:05:37,489 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) [2021-08-29 12:05:37,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-08-29 12:05:37,489 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 11 [2021-08-29 12:05:37,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:05:37,490 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-08-29 12:05:37,490 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) [2021-08-29 12:05:37,490 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-08-29 12:05:37,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 12:05:37,490 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:05:37,490 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:05:37,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 12:05:37,709 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 [2021-08-29 12:05:37,710 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)] === [2021-08-29 12:05:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:05:37,710 INFO L82 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2021-08-29 12:05:37,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:05:37,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265062612] [2021-08-29 12:05:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:37,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:05:37,718 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:05:37,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80592481] [2021-08-29 12:05:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:37,724 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:05:37,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:05:37,725 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) [2021-08-29 12:05:37,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 12:05:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:05:37,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 12:05:37,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:05:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:37,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:05:37,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:05:37,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265062612] [2021-08-29 12:05:37,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:05:37,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80592481] [2021-08-29 12:05:37,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80592481] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:05:37,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:05:37,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 12:05:37,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758112191] [2021-08-29 12:05:37,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 12:05:37,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:05:37,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 12:05:37,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 12:05:37,836 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) [2021-08-29 12:05:37,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:05:37,933 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-08-29 12:05:37,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 12:05:37,934 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 [2021-08-29 12:05:37,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:05:37,934 INFO L225 Difference]: With dead ends: 81 [2021-08-29 12:05:37,935 INFO L226 Difference]: Without dead ends: 57 [2021-08-29 12:05:37,935 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.11ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:05:37,936 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.82ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.00ms IncrementalHoareTripleChecker+Time [2021-08-29 12:05:37,936 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 154 Unknown, 0 Unchecked, 0.82ms Time], IncrementalHoareTripleChecker [18 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 84.00ms Time] [2021-08-29 12:05:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-08-29 12:05:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-08-29 12:05:37,941 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) [2021-08-29 12:05:37,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-08-29 12:05:37,941 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 13 [2021-08-29 12:05:37,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:05:37,942 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-08-29 12:05:37,942 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) [2021-08-29 12:05:37,942 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-08-29 12:05:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 12:05:37,943 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:05:37,943 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:05:37,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 12:05:38,145 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 [2021-08-29 12:05:38,145 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)] === [2021-08-29 12:05:38,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:05:38,146 INFO L82 PathProgramCache]: Analyzing trace with hash 41188983, now seen corresponding path program 1 times [2021-08-29 12:05:38,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:05:38,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191507617] [2021-08-29 12:05:38,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:38,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:05:38,159 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:05:38,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793218036] [2021-08-29 12:05:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:38,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:05:38,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:05:38,165 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) [2021-08-29 12:05:38,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-29 12:05:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:05:38,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 12:05:38,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:05:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:38,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:05:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:38,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:05:38,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191507617] [2021-08-29 12:05:38,430 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:05:38,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793218036] [2021-08-29 12:05:38,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793218036] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:05:38,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:05:38,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-29 12:05:38,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691715752] [2021-08-29 12:05:38,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 12:05:38,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:05:38,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 12:05:38,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:05:38,433 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 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) [2021-08-29 12:05:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:05:38,659 INFO L93 Difference]: Finished difference Result 91 states and 94 transitions. [2021-08-29 12:05:38,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:05:38,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 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 20 [2021-08-29 12:05:38,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:05:38,661 INFO L225 Difference]: With dead ends: 91 [2021-08-29 12:05:38,662 INFO L226 Difference]: Without dead ends: 85 [2021-08-29 12:05:38,662 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 53.39ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-08-29 12:05:38,664 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 117 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 151.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.91ms SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 168.23ms IncrementalHoareTripleChecker+Time [2021-08-29 12:05:38,664 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 0 Invalid, 202 Unknown, 0 Unchecked, 3.91ms Time], IncrementalHoareTripleChecker [39 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 168.23ms Time] [2021-08-29 12:05:38,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-08-29 12:05:38,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 50. [2021-08-29 12:05:38,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:05:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-08-29 12:05:38,691 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 20 [2021-08-29 12:05:38,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:05:38,692 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-08-29 12:05:38,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 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) [2021-08-29 12:05:38,692 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-08-29 12:05:38,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-29 12:05:38,693 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:05:38,693 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:05:38,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-29 12:05:38,908 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 [2021-08-29 12:05:38,909 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)] === [2021-08-29 12:05:38,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:05:38,909 INFO L82 PathProgramCache]: Analyzing trace with hash 928063098, now seen corresponding path program 1 times [2021-08-29 12:05:38,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:05:38,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836959160] [2021-08-29 12:05:38,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:38,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:05:38,945 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:05:38,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817352368] [2021-08-29 12:05:38,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:38,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:05:38,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:05:38,947 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) [2021-08-29 12:05:38,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-29 12:05:38,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:05:38,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 12:05:38,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:05:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:39,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:05:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:39,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:05:39,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836959160] [2021-08-29 12:05:39,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:05:39,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817352368] [2021-08-29 12:05:39,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817352368] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:05:39,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:05:39,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-08-29 12:05:39,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364613126] [2021-08-29 12:05:39,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 12:05:39,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:05:39,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 12:05:39,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-29 12:05:39,157 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:05:39,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:05:39,305 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2021-08-29 12:05:39,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 12:05:39,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-29 12:05:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:05:39,306 INFO L225 Difference]: With dead ends: 85 [2021-08-29 12:05:39,306 INFO L226 Difference]: Without dead ends: 83 [2021-08-29 12:05:39,306 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 28.37ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-08-29 12:05:39,306 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.67ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.43ms IncrementalHoareTripleChecker+Time [2021-08-29 12:05:39,306 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 256 Unknown, 0 Unchecked, 0.67ms Time], IncrementalHoareTripleChecker [5 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 127.43ms Time] [2021-08-29 12:05:39,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-08-29 12:05:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 56. [2021-08-29 12:05:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.12) 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) [2021-08-29 12:05:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-08-29 12:05:39,311 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 22 [2021-08-29 12:05:39,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:05:39,311 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-08-29 12:05:39,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:05:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-08-29 12:05:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-29 12:05:39,312 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:05:39,312 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:05:39,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-29 12:05:39,512 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 [2021-08-29 12:05:39,513 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)] === [2021-08-29 12:05:39,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:05:39,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1484403939, now seen corresponding path program 1 times [2021-08-29 12:05:39,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:05:39,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551550769] [2021-08-29 12:05:39,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:39,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:05:39,519 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:05:39,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714083416] [2021-08-29 12:05:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:39,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:05:39,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:05:39,522 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) [2021-08-29 12:05:39,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-29 12:05:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:05:39,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 12:05:39,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:05:39,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:39,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:05:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:39,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:05:39,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551550769] [2021-08-29 12:05:39,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:05:39,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714083416] [2021-08-29 12:05:39,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714083416] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:05:39,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:05:39,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-08-29 12:05:39,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854961133] [2021-08-29 12:05:39,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 12:05:39,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:05:39,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 12:05:39,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-29 12:05:39,836 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:05:39,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:05:39,958 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2021-08-29 12:05:39,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 12:05:39,958 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-08-29 12:05:39,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:05:39,959 INFO L225 Difference]: With dead ends: 83 [2021-08-29 12:05:39,959 INFO L226 Difference]: Without dead ends: 75 [2021-08-29 12:05:39,959 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 47.42ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-29 12:05:39,960 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.60ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.57ms IncrementalHoareTripleChecker+Time [2021-08-29 12:05:39,960 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 179 Unknown, 0 Unchecked, 0.60ms Time], IncrementalHoareTripleChecker [6 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 98.57ms Time] [2021-08-29 12:05:39,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-08-29 12:05:39,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2021-08-29 12:05:39,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 68 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) [2021-08-29 12:05:39,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2021-08-29 12:05:39,968 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 24 [2021-08-29 12:05:39,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:05:39,968 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2021-08-29 12:05:39,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:05:39,968 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2021-08-29 12:05:39,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-29 12:05:39,969 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:05:39,969 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:05:39,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-29 12:05:40,178 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 [2021-08-29 12:05:40,178 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:05:40,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:05:40,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1813911283, now seen corresponding path program 1 times [2021-08-29 12:05:40,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:05:40,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801622495] [2021-08-29 12:05:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:40,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:05:40,187 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:05:40,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250769715] [2021-08-29 12:05:40,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:40,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:05:40,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:05:40,194 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) [2021-08-29 12:05:40,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-29 12:05:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:05:40,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-29 12:05:40,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:05:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:40,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:05:40,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:40,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:05:40,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801622495] [2021-08-29 12:05:40,922 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:05:40,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250769715] [2021-08-29 12:05:40,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250769715] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:05:40,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:05:40,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-08-29 12:05:40,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736743866] [2021-08-29 12:05:40,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 12:05:40,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:05:40,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 12:05:40,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-29 12:05:40,924 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:05:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:05:41,175 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2021-08-29 12:05:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-29 12:05:41,175 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-08-29 12:05:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:05:41,176 INFO L225 Difference]: With dead ends: 75 [2021-08-29 12:05:41,176 INFO L226 Difference]: Without dead ends: 73 [2021-08-29 12:05:41,176 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 119.31ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-08-29 12:05:41,177 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 179.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.89ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 202.79ms IncrementalHoareTripleChecker+Time [2021-08-29 12:05:41,177 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 290 Unknown, 0 Unchecked, 0.89ms Time], IncrementalHoareTripleChecker [15 Valid, 228 Invalid, 0 Unknown, 47 Unchecked, 202.79ms Time] [2021-08-29 12:05:41,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-29 12:05:41,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2021-08-29 12:05:41,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 63 states have (on average 1.126984126984127) internal successors, (71), 68 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:05:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2021-08-29 12:05:41,184 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 31 [2021-08-29 12:05:41,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:05:41,184 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2021-08-29 12:05:41,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:05:41,185 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2021-08-29 12:05:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-29 12:05:41,185 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:05:41,185 INFO L513 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] [2021-08-29 12:05:41,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-29 12:05:41,398 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 [2021-08-29 12:05:41,398 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:05:41,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:05:41,399 INFO L82 PathProgramCache]: Analyzing trace with hash -587821098, now seen corresponding path program 1 times [2021-08-29 12:05:41,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:05:41,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553777767] [2021-08-29 12:05:41,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:41,399 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:05:41,407 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:05:41,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012682804] [2021-08-29 12:05:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:41,407 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:05:41,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:05:41,425 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) [2021-08-29 12:05:41,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-29 12:05:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:05:41,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-29 12:05:41,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:05:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:42,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:05:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:42,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:05:42,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553777767] [2021-08-29 12:05:42,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:05:42,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012682804] [2021-08-29 12:05:42,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012682804] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:05:42,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:05:42,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-08-29 12:05:42,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906541985] [2021-08-29 12:05:42,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-29 12:05:42,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:05:42,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-29 12:05:42,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-08-29 12:05:42,348 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2021-08-29 12:05:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:05:43,837 INFO L93 Difference]: Finished difference Result 106 states and 107 transitions. [2021-08-29 12:05:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-29 12:05:43,837 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) Word has length 33 [2021-08-29 12:05:43,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:05:43,838 INFO L225 Difference]: With dead ends: 106 [2021-08-29 12:05:43,838 INFO L226 Difference]: Without dead ends: 104 [2021-08-29 12:05:43,839 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 752.28ms TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2021-08-29 12:05:43,839 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 180 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 762.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.41ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 822.02ms IncrementalHoareTripleChecker+Time [2021-08-29 12:05:43,839 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 0 Invalid, 310 Unknown, 0 Unchecked, 2.41ms Time], IncrementalHoareTripleChecker [17 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 822.02ms Time] [2021-08-29 12:05:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-08-29 12:05:43,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 86. [2021-08-29 12:05:43,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.1375) internal successors, (91), 85 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:05:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2021-08-29 12:05:43,853 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 33 [2021-08-29 12:05:43,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:05:43,853 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2021-08-29 12:05:43,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 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) [2021-08-29 12:05:43,853 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2021-08-29 12:05:43,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-29 12:05:43,854 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:05:43,854 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-29 12:05:43,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-29 12:05:44,056 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 [2021-08-29 12:05:44,057 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:05:44,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:05:44,057 INFO L82 PathProgramCache]: Analyzing trace with hash 955884789, now seen corresponding path program 2 times [2021-08-29 12:05:44,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:05:44,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343624417] [2021-08-29 12:05:44,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:44,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:05:44,063 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:05:44,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088051962] [2021-08-29 12:05:44,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 12:05:44,063 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:05:44,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:05:44,071 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) [2021-08-29 12:05:44,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-29 12:05:44,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 12:05:44,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:05:44,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-29 12:05:44,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:05:44,392 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:44,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:05:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:44,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:05:44,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343624417] [2021-08-29 12:05:44,626 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:05:44,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088051962] [2021-08-29 12:05:44,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088051962] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:05:44,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:05:44,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-29 12:05:44,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887578855] [2021-08-29 12:05:44,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-29 12:05:44,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:05:44,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-29 12:05:44,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-08-29 12:05:44,628 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:05:46,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:05:46,062 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2021-08-29 12:05:46,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-29 12:05:46,062 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-29 12:05:46,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:05:46,063 INFO L225 Difference]: With dead ends: 144 [2021-08-29 12:05:46,063 INFO L226 Difference]: Without dead ends: 142 [2021-08-29 12:05:46,063 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 413.77ms TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2021-08-29 12:05:46,064 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 335 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1031.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.14ms SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1080.42ms IncrementalHoareTripleChecker+Time [2021-08-29 12:05:46,064 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 0 Invalid, 551 Unknown, 0 Unchecked, 3.14ms Time], IncrementalHoareTripleChecker [86 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 1080.42ms Time] [2021-08-29 12:05:46,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-08-29 12:05:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 103. [2021-08-29 12:05:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 97 states have (on average 1.1237113402061856) internal successors, (109), 102 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:05:46,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2021-08-29 12:05:46,074 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 33 [2021-08-29 12:05:46,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:05:46,074 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2021-08-29 12:05:46,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:05:46,075 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2021-08-29 12:05:46,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-29 12:05:46,075 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:05:46,075 INFO L513 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] [2021-08-29 12:05:46,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-08-29 12:05:46,280 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 [2021-08-29 12:05:46,281 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:05:46,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:05:46,281 INFO L82 PathProgramCache]: Analyzing trace with hash 2039766361, now seen corresponding path program 1 times [2021-08-29 12:05:46,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:05:46,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745108387] [2021-08-29 12:05:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:46,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:05:46,287 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:05:46,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225838218] [2021-08-29 12:05:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:05:46,287 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:05:46,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:05:46,290 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) [2021-08-29 12:05:46,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-29 12:05:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:05:46,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core [2021-08-29 12:05:46,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:05:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:46,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:05:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:05:54,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:05:54,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745108387] [2021-08-29 12:05:54,616 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:05:54,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225838218] [2021-08-29 12:05:54,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225838218] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:05:54,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:05:54,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2021-08-29 12:05:54,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997058776] [2021-08-29 12:05:54,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-29 12:05:54,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:05:54,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-29 12:05:54,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=146, Unknown=1, NotChecked=0, Total=210 [2021-08-29 12:05:54,617 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 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) [2021-08-29 12:06:00,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:06:02,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:06:08,496 WARN L210 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-08-29 12:06:09,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:06:09,024 INFO L93 Difference]: Finished difference Result 124 states and 127 transitions. [2021-08-29 12:06:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-29 12:06:09,024 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 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) Word has length 35 [2021-08-29 12:06:09,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:06:09,025 INFO L225 Difference]: With dead ends: 124 [2021-08-29 12:06:09,025 INFO L226 Difference]: Without dead ends: 114 [2021-08-29 12:06:09,026 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 11211.90ms TimeCoverageRelationStatistics Valid=323, Invalid=668, Unknown=1, NotChecked=0, Total=992 [2021-08-29 12:06:09,026 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 331 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 75 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5484.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.69ms SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5523.71ms IncrementalHoareTripleChecker+Time [2021-08-29 12:06:09,026 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 0 Invalid, 483 Unknown, 0 Unchecked, 2.69ms Time], IncrementalHoareTripleChecker [75 Valid, 406 Invalid, 2 Unknown, 0 Unchecked, 5523.71ms Time] [2021-08-29 12:06:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-08-29 12:06:09,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2021-08-29 12:06:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 97 states have (on average 1.134020618556701) internal successors, (110), 102 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:06:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2021-08-29 12:06:09,038 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 35 [2021-08-29 12:06:09,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:06:09,039 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2021-08-29 12:06:09,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 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) [2021-08-29 12:06:09,039 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2021-08-29 12:06:09,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-29 12:06:09,039 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:06:09,040 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-29 12:06:09,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-29 12:06:09,256 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 [2021-08-29 12:06:09,257 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:06:09,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:06:09,257 INFO L82 PathProgramCache]: Analyzing trace with hash -517562664, now seen corresponding path program 2 times [2021-08-29 12:06:09,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:06:09,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646083955] [2021-08-29 12:06:09,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:06:09,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:06:09,267 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:06:09,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515377404] [2021-08-29 12:06:09,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 12:06:09,267 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:06:09,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:06:09,270 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) [2021-08-29 12:06:09,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-29 12:06:09,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-29 12:06:09,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:06:09,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-29 12:06:09,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:06:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-29 12:06:12,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:06:12,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:06:12,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646083955] [2021-08-29 12:06:12,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:06:12,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515377404] [2021-08-29 12:06:12,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515377404] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:06:12,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:06:12,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-29 12:06:12,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440356449] [2021-08-29 12:06:12,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 12:06:12,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:06:12,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 12:06:12,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2021-08-29 12:06:12,554 INFO L87 Difference]: Start difference. First operand 103 states and 110 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) [2021-08-29 12:06:15,451 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:06:17,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:06:19,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:06:23,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:06:27,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:06:29,219 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:06:36,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:06:38,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:06:40,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:06:41,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:06:43,527 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:06:43,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:06:43,558 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2021-08-29 12:06:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 12:06:43,559 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 [2021-08-29 12:06:43,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:06:43,559 INFO L225 Difference]: With dead ends: 103 [2021-08-29 12:06:43,559 INFO L226 Difference]: Without dead ends: 99 [2021-08-29 12:06:43,560 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 7307.36ms TimeCoverageRelationStatistics Valid=42, Invalid=112, Unknown=2, NotChecked=0, Total=156 [2021-08-29 12:06:43,560 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 65 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 43 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25716.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.00ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25743.12ms IncrementalHoareTripleChecker+Time [2021-08-29 12:06:43,560 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 0 Invalid, 187 Unknown, 0 Unchecked, 1.00ms Time], IncrementalHoareTripleChecker [43 Valid, 139 Invalid, 5 Unknown, 0 Unchecked, 25743.12ms Time] [2021-08-29 12:06:43,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-08-29 12:06:43,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2021-08-29 12:06:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 87 states have (on average 1.0804597701149425) internal successors, (94), 90 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:06:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2021-08-29 12:06:43,578 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 35 [2021-08-29 12:06:43,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:06:43,579 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2021-08-29 12:06:43,579 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) [2021-08-29 12:06:43,579 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2021-08-29 12:06:43,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-08-29 12:06:43,581 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:06:43,581 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:06:43,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-29 12:06:43,796 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 [2021-08-29 12:06:43,797 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:06:43,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:06:43,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1745507624, now seen corresponding path program 2 times [2021-08-29 12:06:43,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:06:43,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38731746] [2021-08-29 12:06:43,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:06:43,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:06:43,801 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:06:43,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1242628065] [2021-08-29 12:06:43,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 12:06:43,802 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:06:43,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:06:43,802 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) [2021-08-29 12:06:43,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-29 12:06:43,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-29 12:06:43,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:06:43,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 48 conjunts are in the unsatisfiable core [2021-08-29 12:06:43,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:06:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:06:44,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:06:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 12:06:51,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:06:51,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38731746] [2021-08-29 12:06:51,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:06:51,707 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242628065] [2021-08-29 12:06:51,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242628065] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 12:06:51,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 12:06:51,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2021-08-29 12:06:51,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979074827] [2021-08-29 12:06:51,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-08-29 12:06:51,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:06:51,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-08-29 12:06:51,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-08-29 12:06:51,709 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:07:05,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:07:05,613 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions. [2021-08-29 12:07:05,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-08-29 12:07:05,614 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2021-08-29 12:07:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:07:05,614 INFO L225 Difference]: With dead ends: 122 [2021-08-29 12:07:05,614 INFO L226 Difference]: Without dead ends: 120 [2021-08-29 12:07:05,615 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 13545.90ms TimeCoverageRelationStatistics Valid=353, Invalid=906, Unknown=1, NotChecked=0, Total=1260 [2021-08-29 12:07:05,615 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 197 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 981.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.98ms SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 1012.44ms IncrementalHoareTripleChecker+Time [2021-08-29 12:07:05,615 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 0 Invalid, 598 Unknown, 0 Unchecked, 1.98ms Time], IncrementalHoareTripleChecker [60 Valid, 375 Invalid, 0 Unknown, 163 Unchecked, 1012.44ms Time] [2021-08-29 12:07:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-08-29 12:07:05,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2021-08-29 12:07:05,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 99 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:07:05,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2021-08-29 12:07:05,628 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 42 [2021-08-29 12:07:05,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:07:05,628 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2021-08-29 12:07:05,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 20 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:07:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2021-08-29 12:07:05,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-29 12:07:05,629 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:07:05,629 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:07:05,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-29 12:07:05,833 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 [2021-08-29 12:07:05,833 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:07:05,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:07:05,833 INFO L82 PathProgramCache]: Analyzing trace with hash 233518372, now seen corresponding path program 1 times [2021-08-29 12:07:05,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:07:05,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177103012] [2021-08-29 12:07:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:07:05,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:07:05,838 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:07:05,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103812234] [2021-08-29 12:07:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:07:05,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:07:05,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:07:05,839 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) [2021-08-29 12:07:05,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-29 12:07:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 12:07:05,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-29 12:07:05,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:07:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-08-29 12:07:06,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:07:06,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:07:06,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177103012] [2021-08-29 12:07:06,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:07:06,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103812234] [2021-08-29 12:07:06,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103812234] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:07:06,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:07:06,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 12:07:06,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417649067] [2021-08-29 12:07:06,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 12:07:06,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:07:06,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 12:07:06,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 12:07:06,066 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 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) [2021-08-29 12:07:07,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:07:07,165 INFO L93 Difference]: Finished difference Result 100 states and 103 transitions. [2021-08-29 12:07:07,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 12:07:07,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 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 50 [2021-08-29 12:07:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:07:07,166 INFO L225 Difference]: With dead ends: 100 [2021-08-29 12:07:07,166 INFO L226 Difference]: Without dead ends: 86 [2021-08-29 12:07:07,166 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 172.39ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 12:07:07,167 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 957.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.34ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 967.08ms IncrementalHoareTripleChecker+Time [2021-08-29 12:07:07,167 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 111 Unknown, 0 Unchecked, 0.34ms Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 967.08ms Time] [2021-08-29 12:07:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-08-29 12:07:07,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-08-29 12:07:07,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 85 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:07:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2021-08-29 12:07:07,179 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 50 [2021-08-29 12:07:07,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:07:07,179 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2021-08-29 12:07:07,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 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) [2021-08-29 12:07:07,179 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2021-08-29 12:07:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-29 12:07:07,180 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:07:07,180 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:07:07,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-08-29 12:07:07,385 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 [2021-08-29 12:07:07,385 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:07:07,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:07:07,385 INFO L82 PathProgramCache]: Analyzing trace with hash -521312586, now seen corresponding path program 2 times [2021-08-29 12:07:07,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:07:07,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680551160] [2021-08-29 12:07:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:07:07,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:07:07,391 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:07:07,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150855186] [2021-08-29 12:07:07,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-29 12:07:07,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:07:07,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:07:07,392 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) [2021-08-29 12:07:07,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-29 12:07:07,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-29 12:07:07,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:07:07,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 34 conjunts are in the unsatisfiable core [2021-08-29 12:07:07,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:07:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-08-29 12:07:13,931 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 12:07:13,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:07:13,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680551160] [2021-08-29 12:07:13,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:07:13,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150855186] [2021-08-29 12:07:13,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150855186] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 12:07:13,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 12:07:13,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-29 12:07:13,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447767743] [2021-08-29 12:07:13,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-29 12:07:13,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:07:13,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-29 12:07:13,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-08-29 12:07:13,932 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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) [2021-08-29 12:07:15,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:07:19,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:07:21,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:07:24,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:07:26,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:07:27,730 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:07:29,732 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:07:32,011 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:07:34,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-08-29 12:07:36,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:07:36,584 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-08-29 12:07:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 12:07:36,585 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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 55 [2021-08-29 12:07:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:07:36,585 INFO L225 Difference]: With dead ends: 86 [2021-08-29 12:07:36,585 INFO L226 Difference]: Without dead ends: 76 [2021-08-29 12:07:36,585 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 9310.11ms TimeCoverageRelationStatistics Valid=123, Invalid=296, Unknown=1, NotChecked=0, Total=420 [2021-08-29 12:07:36,586 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 32 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19250.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.92ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19277.14ms IncrementalHoareTripleChecker+Time [2021-08-29 12:07:36,586 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 140 Unknown, 0 Unchecked, 0.92ms Time], IncrementalHoareTripleChecker [32 Valid, 105 Invalid, 3 Unknown, 0 Unchecked, 19277.14ms Time] [2021-08-29 12:07:36,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-08-29 12:07:36,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-08-29 12:07:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:07:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2021-08-29 12:07:36,597 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 55 [2021-08-29 12:07:36,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:07:36,597 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2021-08-29 12:07:36,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 15 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) [2021-08-29 12:07:36,598 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2021-08-29 12:07:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-29 12:07:36,598 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 12:07:36,598 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 12:07:36,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-29 12:07:36,805 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 [2021-08-29 12:07:36,805 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-08-29 12:07:36,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 12:07:36,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1549546317, now seen corresponding path program 3 times [2021-08-29 12:07:36,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 12:07:36,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120597774] [2021-08-29 12:07:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 12:07:36,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 12:07:36,809 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 12:07:36,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515685259] [2021-08-29 12:07:36,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-29 12:07:36,810 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 12:07:36,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 12:07:36,810 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) [2021-08-29 12:07:36,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-29 12:07:36,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-08-29 12:07:36,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-29 12:07:36,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 43 conjunts are in the unsatisfiable core [2021-08-29 12:07:36,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 12:07:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 84 proven. 3 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-08-29 12:07:42,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 12:07:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-08-29 12:07:42,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 12:07:42,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120597774] [2021-08-29 12:07:42,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 12:07:42,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515685259] [2021-08-29 12:07:42,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515685259] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-29 12:07:42,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 12:07:42,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 24 [2021-08-29 12:07:42,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163582014] [2021-08-29 12:07:42,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-29 12:07:42,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 12:07:42,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-29 12:07:42,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-08-29 12:07:42,929 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:07:43,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 12:07:43,263 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2021-08-29 12:07:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 12:07:43,263 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-08-29 12:07:43,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 12:07:43,263 INFO L225 Difference]: With dead ends: 76 [2021-08-29 12:07:43,263 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 12:07:43,264 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 5395.42ms TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2021-08-29 12:07:43,264 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 63 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 182.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.44ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 192.97ms IncrementalHoareTripleChecker+Time [2021-08-29 12:07:43,264 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 0 Invalid, 76 Unknown, 0 Unchecked, 0.44ms Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 192.97ms Time] [2021-08-29 12:07:43,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 12:07:43,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 12:07:43,265 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) [2021-08-29 12:07:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 12:07:43,265 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2021-08-29 12:07:43,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 12:07:43,265 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 12:07:43,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 12:07:43,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 12:07:43,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 12:07:43,267 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2021-08-29 12:07:43,268 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2021-08-29 12:07:43,268 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2021-08-29 12:07:43,268 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2021-08-29 12:07:43,268 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining) [2021-08-29 12:07:43,268 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (5 of 11 remaining) [2021-08-29 12:07:43,268 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2021-08-29 12:07:43,268 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2021-08-29 12:07:43,269 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2021-08-29 12:07:43,269 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2021-08-29 12:07:43,269 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2021-08-29 12:07:43,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-29 12:07:43,469 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 [2021-08-29 12:07:43,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 12:07:43,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:07:43,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:07:43,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:07:43,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:07:43,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:07:43,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:07:43,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:07:43,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:07:43,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:07:43,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:07:43,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:07:43,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:07:43,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 12:07:55,623 WARN L210 SmtUtils]: Spent 11.87s on a formula simplification. DAG size of input: 192 DAG size of output: 56 [2021-08-29 12:08:13,034 WARN L210 SmtUtils]: Spent 17.41s on a formula simplification. DAG size of input: 189 DAG size of output: 41 [2021-08-29 12:08:19,579 WARN L210 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 203 DAG size of output: 36 [2021-08-29 12:08:36,362 WARN L210 SmtUtils]: Spent 14.04s on a formula simplification. DAG size of input: 179 DAG size of output: 52 [2021-08-29 12:08:52,321 WARN L210 SmtUtils]: Spent 15.96s on a formula simplification. DAG size of input: 177 DAG size of output: 41 [2021-08-29 12:09:18,277 WARN L210 SmtUtils]: Spent 25.95s on a formula simplification. DAG size of input: 202 DAG size of output: 48 [2021-08-29 12:09:26,671 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 12:09:26,672 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 12:09:26,672 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-08-29 12:09:26,672 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 12:09:26,672 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 12:09:26,672 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 12:09:26,672 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-08-29 12:09:26,672 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 12:09:26,672 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 12:09:26,672 INFO L861 garLoopResultBuilder]: At program point L55(lines 22 56) the Hoare annotation is: true [2021-08-29 12:09:26,672 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 12:09:26,673 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-08-29 12:09:26,673 INFO L854 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~x~0 (let ((.cse0 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (* .cse0 .cse0 .cse0))) (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) [2021-08-29 12:09:26,673 INFO L858 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-08-29 12:09:26,673 INFO L854 garLoopResultBuilder]: At program point L15-5(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 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-08-29 12:09:26,673 INFO L858 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-08-29 12:09:26,673 INFO L854 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 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-08-29 12:09:26,673 INFO L858 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-08-29 12:09:26,674 INFO L854 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) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (= ULTIMATE.start_main_~y~0 (let ((.cse0 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse0 .cse0)) (* 3 .cse0) 1))) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-08-29 12:09:26,674 INFO L858 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-08-29 12:09:26,674 INFO L854 garLoopResultBuilder]: At program point L15-14(lines 39 40) 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) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (= ULTIMATE.start_main_~y~0 (let ((.cse0 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse0 .cse0)) (* 3 .cse0) 1))) (<= 0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)) (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))) [2021-08-29 12:09:26,674 INFO L858 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-08-29 12:09:26,674 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 12:09:26,674 INFO L854 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1))) (.cse2 (<= 0 ULTIMATE.start_main_~a~0)) (.cse3 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and .cse0 (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0))) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) (* 18 ULTIMATE.start_main_~x~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (* 2 ULTIMATE.start_main_~z~0))) .cse2 (= 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)) .cse3 (= ULTIMATE.start_main_~n~0 0)) (and .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 (= ULTIMATE.start_main_~x~0 1) (< ULTIMATE.start_main_~a~0 1) .cse2 .cse3 (= ULTIMATE.start_main_~n~0 1)))) [2021-08-29 12:09:26,674 INFO L858 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-08-29 12:09:26,674 INFO L854 garLoopResultBuilder]: At program point L15-20(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_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (let ((.cse1 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (= (+ (* 6 (* ULTIMATE.start_main_~a~0 .cse1 .cse1 .cse1)) (* 12 (* .cse1 .cse1 .cse1))) (* .cse1 .cse1 .cse1 ULTIMATE.start_main_~z~0))) (<= 0 ULTIMATE.start_main_~a~0) .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0))))) [2021-08-29 12:09:26,675 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 12:09:26,675 INFO L858 garLoopResultBuilder]: For program point L15-21(lines 15 18) no Hoare annotation was computed. [2021-08-29 12:09:26,675 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 12:09:26,675 INFO L854 garLoopResultBuilder]: At program point L15-23(lines 14 20) the Hoare annotation is: (let ((.cse5 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~a~0 2)) (.cse2 (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1))) (.cse3 (<= 0 ULTIMATE.start_main_~a~0)) (.cse4 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0))) .cse3 .cse4 .cse5))) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) (* 18 ULTIMATE.start_main_~x~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (* 2 ULTIMATE.start_main_~z~0)))) (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) .cse5))) [2021-08-29 12:09:26,675 INFO L858 garLoopResultBuilder]: For program point L15-24(lines 15 18) no Hoare annotation was computed. [2021-08-29 12:09:26,675 INFO L854 garLoopResultBuilder]: At program point L15-26(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1))) (.cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse2 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and .cse0 (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 12) .cse1 .cse2) (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) .cse2) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 2) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) (= (+ 6 (* 12 ULTIMATE.start_main_~y~0) (* 18 ULTIMATE.start_main_~x~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (* 2 ULTIMATE.start_main_~z~0))) (<= 0 ULTIMATE.start_main_~a~0) .cse1 .cse2))) [2021-08-29 12:09:26,675 INFO L858 garLoopResultBuilder]: For program point L15-27(lines 15 18) no Hoare annotation was computed. [2021-08-29 12:09:26,676 INFO L854 garLoopResultBuilder]: At program point L15-29(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= ULTIMATE.start_main_~x~0 (let ((.cse8 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (* .cse8 .cse8 .cse8)))) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= ULTIMATE.start_main_~a~0 2)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1))) (.cse6 (<= 0 ULTIMATE.start_main_~a~0)) (.cse7 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0))) .cse6 .cse7) (and (= ULTIMATE.start_main_~x~0 0) .cse2 (= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~z~0 6) .cse7) (and .cse2 .cse5 (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 12) .cse7) (and .cse0 .cse1 .cse2 .cse3 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) .cse4 .cse5 .cse6 .cse7))) [2021-08-29 12:09:26,676 INFO L858 garLoopResultBuilder]: For program point L15-30(lines 15 18) no Hoare annotation was computed. [2021-08-29 12:09:26,676 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-08-29 12:09:26,676 INFO L858 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-08-29 12:09:26,676 INFO L861 garLoopResultBuilder]: At program point L15-32(lines 14 20) the Hoare annotation is: true [2021-08-29 12:09:26,676 INFO L858 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-08-29 12:09:26,676 INFO L858 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-08-29 12:09:26,676 INFO L858 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-08-29 12:09:26,676 INFO L858 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-08-29 12:09:26,677 INFO L858 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-08-29 12:09:26,677 INFO L858 garLoopResultBuilder]: For program point L16-7(lines 16 17) no Hoare annotation was computed. [2021-08-29 12:09:26,677 INFO L858 garLoopResultBuilder]: For program point L16-8(lines 16 17) no Hoare annotation was computed. [2021-08-29 12:09:26,677 INFO L858 garLoopResultBuilder]: For program point L16-9(lines 16 17) no Hoare annotation was computed. [2021-08-29 12:09:26,677 INFO L858 garLoopResultBuilder]: For program point L16-10(lines 16 17) no Hoare annotation was computed. [2021-08-29 12:09:26,677 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 12:09:26,677 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 12:09:26,677 INFO L854 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~a~0 2)) (.cse3 (<= 0 ULTIMATE.start_main_~a~0)) (.cse4 (= ULTIMATE.start_main_~z~0 (+ (* 6 ULTIMATE.start_main_~n~0) 6))) (.cse5 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~y~0 (let ((.cse2 (div (+ 6 (* ULTIMATE.start_main_~z~0 (- 1))) (- 6)))) (+ (* 3 (* .cse2 .cse2)) (* 3 .cse2) 1))) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~n~0 0)) (and .cse0 .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~y~0 (+ (* 3 ULTIMATE.start_main_~n~0) (* 3 (* ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~n~0)) 1)) (or (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~a~0) (= (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) (+ (* 6 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0)) (* 12 ULTIMATE.start_main_~x~0)))) .cse3 .cse4 .cse5))) [2021-08-29 12:09:26,677 INFO L858 garLoopResultBuilder]: For program point L33-3(lines 33 46) no Hoare annotation was computed. [2021-08-29 12:09:26,678 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 12:09:26,678 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-29 12:09:26,681 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 12:09:26,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 12:09:26 BoogieIcfgContainer [2021-08-29 12:09:26,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 12:09:26,710 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 12:09:26,710 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 12:09:26,710 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 12:09:26,711 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 12:05:36" (3/4) ... [2021-08-29 12:09:26,714 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 12:09:26,721 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-08-29 12:09:26,721 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 12:09:26,721 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 12:09:26,721 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 12:09:26,769 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 12:09:26,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 12:09:26,770 INFO L158 Benchmark]: Toolchain (without parser) took 231244.71ms. Allocated memory was 48.2MB in the beginning and 111.1MB in the end (delta: 62.9MB). Free memory was 23.9MB in the beginning and 80.2MB in the end (delta: -56.3MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-08-29 12:09:26,770 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 48.2MB. Free memory was 30.5MB in the beginning and 30.5MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:09:26,770 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.27ms. Allocated memory was 48.2MB in the beginning and 62.9MB in the end (delta: 14.7MB). Free memory was 23.7MB in the beginning and 46.9MB in the end (delta: -23.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-08-29 12:09:26,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.63ms. Allocated memory is still 62.9MB. Free memory was 46.9MB in the beginning and 45.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 12:09:26,771 INFO L158 Benchmark]: Boogie Preprocessor took 29.54ms. Allocated memory is still 62.9MB. Free memory was 45.1MB in the beginning and 43.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 12:09:26,774 INFO L158 Benchmark]: RCFGBuilder took 206.38ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 34.1MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 12:09:26,774 INFO L158 Benchmark]: TraceAbstraction took 230695.50ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 33.6MB in the beginning and 84.4MB in the end (delta: -50.8MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2021-08-29 12:09:26,774 INFO L158 Benchmark]: Witness Printer took 59.15ms. Allocated memory is still 111.1MB. Free memory was 84.4MB in the beginning and 80.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 12:09:26,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 48.2MB. Free memory was 30.5MB in the beginning and 30.5MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.27ms. Allocated memory was 48.2MB in the beginning and 62.9MB in the end (delta: 14.7MB). Free memory was 23.7MB in the beginning and 46.9MB in the end (delta: -23.2MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.63ms. Allocated memory is still 62.9MB. Free memory was 46.9MB in the beginning and 45.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.54ms. Allocated memory is still 62.9MB. Free memory was 45.1MB in the beginning and 43.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 206.38ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 34.1MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 230695.50ms. Allocated memory was 62.9MB in the beginning and 111.1MB in the end (delta: 48.2MB). Free memory was 33.6MB in the beginning and 84.4MB in the end (delta: -50.8MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. * Witness Printer took 59.15ms. Allocated memory is still 111.1MB. Free memory was 84.4MB in the beginning and 80.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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: 230623.10ms, OverallIterations: 17, TraceHistogramMax: 6, EmptinessCheckTime: 14.43ms, AutomataDifference: 87775.25ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 103201.68ms, InitialAbstractionConstructionTime: 6.20ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 1550 SdHoareTripleChecker+Valid, 55728.13ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1550 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 55273.17ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 210 IncrementalHoareTripleChecker+Unchecked, 1072 mSDsCounter, 431 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3313 IncrementalHoareTripleChecker+Invalid, 3964 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 431 mSolverCounterUnsat, 0 mSDtfsCounter, 3313 mSolverCounterSat, 25.87ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 884 GetRequests, 660 SyntacticMatches, 14 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 48405.87ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=11, InterpolantAutomatonStates: 154, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 182.85ms AutomataMinimizationTime, 17 MinimizatonAttempts, 225 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 66 NumberOfFragments, 1121 HoareAnnotationTreeSize, 13 FomulaSimplifications, 31826 FormulaSimplificationTreeSizeReduction, 283.87ms HoareSimplificationTime, 13 FomulaSimplificationsInter, 36888 FormulaSimplificationTreeSizeReductionInter, 102909.38ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 81.72ms SsaConstructionTime, 505.77ms SatisfiabilityAnalysisTime, 35051.87ms InterpolantComputationTime, 502 NumberOfCodeBlocks, 403 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 791 ConstructedInterpolants, 33 QuantifiedInterpolants, 13133 SizeOfPredicates, 117 NumberOfNonLiveVariables, 1579 ConjunctsInSsa, 308 ConjunctsInUnsatCore, 26 InterpolantComputations, 9 PerfectInterpolantSequences, 453/670 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 Derived loop invariant: ((((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && z * x == 6 * (a * x) + 12 * x) && 6 + 12 * y + 18 * x == z * y + 2 * z) && 0 <= a) && x == n * n * n) || ((((x == 0 && y == 1) && !(0 == cond)) && z == 6 * n + 6) && n == 0)) || (((((((cond == 1 && 1 <= cond) && y == 3 * n + 3 * (n * n) + 1) && x == 1) && a < 1) && 0 <= a) && z == 6 * n + 6) && n == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && a <= 2) && 1 == cond) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((cond == 1 && a <= 2) && 1 == cond) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && 0 <= a) && z == 6 * n + 6) && 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) && y == 3 * n + 3 * (n * n) + 1) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: ((((((cond == 1 && a <= 2) && y == 3 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6)) + 3 * ((6 + z * -1) / -6) + 1) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) && n == 0) || (((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && x == (6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6)) && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && 0 <= a) && z == 6 * n + 6 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && x == (6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6)) && 1 <= cond) && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && z * x == 6 * (a * x) + 12 * x) && 0 <= a) && z == 6 * n + 6) || ((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6)) || ((((1 <= cond && y == 3 * n + 3 * (n * n) + 1) && x == 1) && z == 12) && z == 6 * n + 6)) || ((((((((cond == 1 && x == (6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6)) && 1 <= cond) && a <= 2) && n <= a) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && 0 <= a) && z == 6 * n + 6) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 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) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && 6 * (a * ((6 + z * -1) / -6) * ((6 + z * -1) / -6) * ((6 + z * -1) / -6)) + 12 * ((6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6)) == (6 + z * -1) / -6 * ((6 + z * -1) / -6) * ((6 + z * -1) / -6) * z) && 0 <= a) && z == 6 * n + 6) && x == n * n * n) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && 0 <= a) && z == 6 * n + 6) && x == n * n * n - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((y == 3 * n + 3 * (n * n) + 1 && x == 1) && z == 12) && !(0 == cond)) && z == 6 * n + 6) || ((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6)) || ((((((((cond == 1 && a <= 2) && 1 == cond) && y == 3 * n + 3 * (n * n) + 1) && (n <= a || z * x == 6 * (a * x) + 12 * x)) && 6 + 12 * y + 18 * x == z * y + 2 * z) && 0 <= a) && !(0 == cond)) && z == 6 * n + 6) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && a <= 2) && n <= a) && y == 3 * n + 3 * (n * n) + 1) && 0 <= a) && !(0 == cond)) && z == 6 * n + 6) || ((((((cond == 1 && a <= 2) && y == 3 * n + 3 * (n * n) + 1) && z * x == 6 * (a * x) + 12 * x) && 0 <= a) && !(0 == cond)) && z == 6 * n + 6)) && 6 + 12 * y + 18 * x == z * y + 2 * z) || ((((x == 0 && 1 <= cond) && y == 1) && z == 6) && z == 6 * n + 6) RESULT: Ultimate proved your program to be correct! [2021-08-29 12:09:26,837 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...