./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/bresenham-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench/bresenham-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68505a1040934ea3cdccf61a3fb1a3debf8c6c64330c175637d96b2737c92d5f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 23:16:29,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 23:16:29,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 23:16:29,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 23:16:29,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 23:16:29,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 23:16:29,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 23:16:29,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 23:16:29,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 23:16:29,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 23:16:29,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 23:16:29,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 23:16:29,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 23:16:29,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 23:16:29,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 23:16:29,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 23:16:29,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 23:16:29,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 23:16:29,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 23:16:29,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 23:16:29,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 23:16:29,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 23:16:29,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 23:16:29,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 23:16:29,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 23:16:29,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 23:16:29,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 23:16:29,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 23:16:29,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 23:16:29,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 23:16:29,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 23:16:29,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 23:16:29,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 23:16:29,737 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 23:16:29,738 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 23:16:29,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 23:16:29,739 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 23:16:29,739 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 23:16:29,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 23:16:29,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 23:16:29,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 23:16:29,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-22 23:16:29,785 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 23:16:29,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 23:16:29,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-22 23:16:29,787 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-22 23:16:29,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 23:16:29,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 23:16:29,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 23:16:29,788 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 23:16:29,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 23:16:29,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 23:16:29,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 23:16:29,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 23:16:29,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 23:16:29,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 23:16:29,797 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 23:16:29,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 23:16:29,797 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 23:16:29,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 23:16:29,798 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-22 23:16:29,798 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-22 23:16:29,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 23:16:29,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-22 23:16:29,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 23:16:29,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 23:16:29,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 23:16:29,799 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-22 23:16:29,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 23:16:29,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 23:16:29,800 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68505a1040934ea3cdccf61a3fb1a3debf8c6c64330c175637d96b2737c92d5f [2021-11-22 23:16:30,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 23:16:30,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 23:16:30,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 23:16:30,082 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 23:16:30,084 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 23:16:30,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/nla-digbench/bresenham-ll.c [2021-11-22 23:16:30,158 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/data/7cc7d305e/d675ae9cb07d4451abef2a2d770e0dbb/FLAG94f49815d [2021-11-22 23:16:30,608 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 23:16:30,609 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/sv-benchmarks/c/nla-digbench/bresenham-ll.c [2021-11-22 23:16:30,615 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/data/7cc7d305e/d675ae9cb07d4451abef2a2d770e0dbb/FLAG94f49815d [2021-11-22 23:16:30,987 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/data/7cc7d305e/d675ae9cb07d4451abef2a2d770e0dbb [2021-11-22 23:16:30,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 23:16:30,991 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 23:16:30,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 23:16:30,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 23:16:31,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 23:16:31,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:16:30" (1/1) ... [2021-11-22 23:16:31,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a026b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:31, skipping insertion in model container [2021-11-22 23:16:31,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:16:30" (1/1) ... [2021-11-22 23:16:31,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 23:16:31,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 23:16:31,213 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/sv-benchmarks/c/nla-digbench/bresenham-ll.c[597,610] [2021-11-22 23:16:31,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:16:31,234 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 23:16:31,246 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/sv-benchmarks/c/nla-digbench/bresenham-ll.c[597,610] [2021-11-22 23:16:31,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:16:31,264 INFO L208 MainTranslator]: Completed translation [2021-11-22 23:16:31,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:31 WrapperNode [2021-11-22 23:16:31,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 23:16:31,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 23:16:31,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 23:16:31,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 23:16:31,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:31" (1/1) ... [2021-11-22 23:16:31,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:31" (1/1) ... [2021-11-22 23:16:31,295 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2021-11-22 23:16:31,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 23:16:31,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 23:16:31,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 23:16:31,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 23:16:31,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:31" (1/1) ... [2021-11-22 23:16:31,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:31" (1/1) ... [2021-11-22 23:16:31,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:31" (1/1) ... [2021-11-22 23:16:31,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:31" (1/1) ... [2021-11-22 23:16:31,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:31" (1/1) ... [2021-11-22 23:16:31,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:31" (1/1) ... [2021-11-22 23:16:31,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:31" (1/1) ... [2021-11-22 23:16:31,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 23:16:31,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 23:16:31,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 23:16:31,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 23:16:31,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:16:31" (1/1) ... [2021-11-22 23:16:31,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-22 23:16:31,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-22 23:16:31,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-22 23:16:31,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_661868a0-817b-4c3c-b53e-dce2e6e046dc/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-22 23:16:31,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 23:16:31,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 23:16:31,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 23:16:31,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 23:16:31,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-22 23:16:31,384 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-22 23:16:31,451 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 23:16:31,454 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 23:16:31,565 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 23:16:31,589 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 23:16:31,589 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 23:16:31,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:16:31 BoogieIcfgContainer [2021-11-22 23:16:31,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 23:16:31,592 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-22 23:16:31,592 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-22 23:16:31,602 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-22 23:16:31,603 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:16:31" (1/1) ... [2021-11-22 23:16:31,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:16:31,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:16:31,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 14 states and 17 transitions. [2021-11-22 23:16:31,671 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-11-22 23:16:31,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 23:16:31,673 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:16:31,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:16:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:16:31,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 23:16:31,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:16:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:16:32,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:16:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 18 states and 24 transitions. [2021-11-22 23:16:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2021-11-22 23:16:32,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 23:16:32,143 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:16:32,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:16:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:16:32,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-22 23:16:32,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:16:32,471 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:16:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:16:37,199 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 23:16:37,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:16:37,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 22 states and 36 transitions. [2021-11-22 23:16:37,236 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 36 transitions. [2021-11-22 23:16:37,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 23:16:37,237 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:16:37,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:16:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:16:37,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 23:16:37,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:16:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:16:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:16:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 24 states and 40 transitions. [2021-11-22 23:16:37,482 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 40 transitions. [2021-11-22 23:16:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 23:16:37,484 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:16:37,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:16:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:16:37,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-22 23:16:37,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:16:37,978 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:16:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 23:16:45,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 5.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 23:16:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:16:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 28 states and 53 transitions. [2021-11-22 23:16:45,868 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 53 transitions. [2021-11-22 23:16:45,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 23:16:45,869 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:16:45,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:16:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:16:45,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-22 23:16:45,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:16:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 23:16:47,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:16:47,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 32 states and 59 transitions. [2021-11-22 23:16:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 59 transitions. [2021-11-22 23:16:47,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 23:16:47,593 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:16:47,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:16:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:16:47,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 23:16:47,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:16:48,792 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:16:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-22 23:17:04,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 10.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 23:17:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:17:06,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 42 states and 93 transitions. [2021-11-22 23:17:06,320 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 93 transitions. [2021-11-22 23:17:06,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 23:17:06,321 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:17:06,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:17:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:17:06,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-22 23:17:06,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:17:07,699 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:17:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-22 23:17:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:17:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 48 states and 107 transitions. [2021-11-22 23:17:13,687 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 107 transitions. [2021-11-22 23:17:13,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 23:17:13,689 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:17:13,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:17:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:17:13,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-22 23:17:13,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:17:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-22 23:17:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:17:17,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 52 states and 116 transitions. [2021-11-22 23:17:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-11-22 23:17:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 23:17:17,495 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:17:17,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:17:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:17:17,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-22 23:17:17,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:17:18,773 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:17:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-22 23:17:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:17:27,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 55 states and 124 transitions. [2021-11-22 23:17:27,743 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 124 transitions. [2021-11-22 23:17:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 23:17:27,744 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:17:27,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:17:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:17:27,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-22 23:17:27,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:17:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-22 23:17:28,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:17:28,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 56 states and 125 transitions. [2021-11-22 23:17:28,823 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 125 transitions. [2021-11-22 23:17:28,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 23:17:28,825 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:17:28,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:17:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:17:28,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-22 23:17:28,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:17:30,748 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:17:35,092 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 23:17:43,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:17:43,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 60 states and 141 transitions. [2021-11-22 23:17:43,663 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 141 transitions. [2021-11-22 23:17:43,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 23:17:43,665 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:17:43,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:17:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:17:43,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-22 23:17:43,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:17:46,304 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 23:17:52,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:17:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 62 states and 142 transitions. [2021-11-22 23:17:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 142 transitions. [2021-11-22 23:17:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 23:17:52,643 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:17:52,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:17:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:17:52,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-22 23:17:52,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:17:56,047 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:17:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 23:18:30,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 76 states and 180 transitions. [2021-11-22 23:18:30,387 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 180 transitions. [2021-11-22 23:18:30,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 23:18:30,389 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:30,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:30,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-22 23:18:30,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:18:33,219 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:18:35,582 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-22 23:18:49,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 23:18:57,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:18:57,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 79 states and 189 transitions. [2021-11-22 23:18:57,849 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 189 transitions. [2021-11-22 23:18:57,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 23:18:57,851 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:18:57,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:18:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:18:57,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-22 23:18:57,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:19:03,855 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:19:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-22 23:19:39,766 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 23:19:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:19:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 89 states and 222 transitions. [2021-11-22 23:19:52,699 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 222 transitions. [2021-11-22 23:19:52,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 23:19:52,701 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:19:52,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:19:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:19:52,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-22 23:19:52,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:20:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-22 23:20:23,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:20:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 91 states and 221 transitions. [2021-11-22 23:20:23,606 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions. [2021-11-22 23:20:23,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 23:20:23,608 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:20:23,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:20:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:20:23,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-22 23:20:23,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:20:32,821 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:20:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-22 23:21:21,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:21:21,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 94 states and 231 transitions. [2021-11-22 23:21:21,159 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 231 transitions. [2021-11-22 23:21:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 23:21:21,160 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:21:21,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:21:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:21:21,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-22 23:21:21,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:21:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-22 23:21:29,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:21:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 95 states and 232 transitions. [2021-11-22 23:21:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 232 transitions. [2021-11-22 23:21:29,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 23:21:29,082 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:21:29,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:21:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:21:29,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-22 23:21:29,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:21:36,153 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:21:42,598 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-22 23:21:48,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:21:48,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 97 states and 235 transitions. [2021-11-22 23:21:48,403 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 235 transitions. [2021-11-22 23:21:48,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-22 23:21:48,404 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:21:48,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:21:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:21:48,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-22 23:21:48,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:22:01,241 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:22:21,905 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 12 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-22 23:23:14,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:23:14,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 101 states and 255 transitions. [2021-11-22 23:23:14,564 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 255 transitions. [2021-11-22 23:23:14,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-22 23:23:14,566 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:23:14,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:23:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:23:14,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-22 23:23:14,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:23:29,828 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:23:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 12 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-22 23:24:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:24:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 104 states and 270 transitions. [2021-11-22 23:24:57,639 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 270 transitions. [2021-11-22 23:24:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-22 23:24:57,641 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:24:57,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:24:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:24:57,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 23:24:57,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:25:22,011 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:25:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 12 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-22 23:26:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:26:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 104 states and 262 transitions. [2021-11-22 23:26:11,927 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 262 transitions. [2021-11-22 23:26:11,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-22 23:26:11,928 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:26:11,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:26:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:26:12,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-22 23:26:12,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:26:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-22 23:27:05,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:27:05,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 106 states and 266 transitions. [2021-11-22 23:27:05,281 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 266 transitions. [2021-11-22 23:27:05,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 23:27:05,283 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:27:05,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:27:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:27:05,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-22 23:27:05,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:27:27,686 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:27:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 14 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-22 23:29:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:29:02,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 110 states and 288 transitions. [2021-11-22 23:29:02,210 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 288 transitions. [2021-11-22 23:29:02,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 23:29:02,211 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:29:02,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:29:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:29:02,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-22 23:29:02,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:29:18,023 WARN L906 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2021-11-22 23:29:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 14 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-22 23:29:59,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:29:59,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 110 states and 279 transitions. [2021-11-22 23:29:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 279 transitions. [2021-11-22 23:29:59,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-22 23:29:59,118 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:29:59,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:29:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:29:59,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-22 23:29:59,263 INFO L286 TraceCheckSpWp]: Computing forward predicates...