./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY --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 2436c69c19f049d89ef519f7bd9d4cf3f7b648737fca21472b0299c532d84f11 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:23:31,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:23:31,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:23:31,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:23:31,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:23:31,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:23:31,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:23:31,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:23:31,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:23:31,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:23:31,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:23:31,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:23:31,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:23:31,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:23:31,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:23:31,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:23:31,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:23:31,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:23:31,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:23:31,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:23:31,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:23:31,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:23:31,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:23:31,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:23:31,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:23:31,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:23:31,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:23:31,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:23:31,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:23:31,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:23:31,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:23:31,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:23:31,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:23:31,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:23:31,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:23:31,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:23:31,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:23:31,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:23:31,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:23:31,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:23:31,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:23:31,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 07:23:31,911 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:23:31,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:23:31,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:23:31,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:23:31,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:23:31,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:23:31,913 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:23:31,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:23:31,914 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:23:31,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:23:31,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:23:31,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:23:31,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:23:31,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:23:31,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:23:31,915 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:23:31,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:23:31,915 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:23:31,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:23:31,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:23:31,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:23:31,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:23:31,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:23:31,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:23:31,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:23:31,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:23:31,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:23:31,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:23:31,918 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:23:31,918 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:23:31,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:23:31,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:23:31,918 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_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2436c69c19f049d89ef519f7bd9d4cf3f7b648737fca21472b0299c532d84f11 [2021-11-07 07:23:32,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:23:32,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:23:32,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:23:32,184 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:23:32,184 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:23:32,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c [2021-11-07 07:23:32,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/data/d2be13add/eb8a040c4fea44c99c2a17296e17788c/FLAGa3744e30c [2021-11-07 07:23:32,698 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:23:32,699 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c [2021-11-07 07:23:32,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/data/d2be13add/eb8a040c4fea44c99c2a17296e17788c/FLAGa3744e30c [2021-11-07 07:23:33,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/data/d2be13add/eb8a040c4fea44c99c2a17296e17788c [2021-11-07 07:23:33,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:23:33,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:23:33,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:23:33,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:23:33,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:23:33,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:23:33" (1/1) ... [2021-11-07 07:23:33,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23944051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:33, skipping insertion in model container [2021-11-07 07:23:33,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:23:33" (1/1) ... [2021-11-07 07:23:33,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:23:33,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:23:33,340 WARN L228 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_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c[458,471] [2021-11-07 07:23:33,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:23:33,388 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:23:33,401 WARN L228 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_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c[458,471] [2021-11-07 07:23:33,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:23:33,441 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:23:33,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:33 WrapperNode [2021-11-07 07:23:33,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:23:33,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:23:33,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:23:33,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:23:33,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:33" (1/1) ... [2021-11-07 07:23:33,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:33" (1/1) ... [2021-11-07 07:23:33,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:23:33,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:23:33,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:23:33,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:23:33,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:33" (1/1) ... [2021-11-07 07:23:33,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:33" (1/1) ... [2021-11-07 07:23:33,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:33" (1/1) ... [2021-11-07 07:23:33,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:33" (1/1) ... [2021-11-07 07:23:33,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:33" (1/1) ... [2021-11-07 07:23:33,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:33" (1/1) ... [2021-11-07 07:23:33,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:33" (1/1) ... [2021-11-07 07:23:33,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:23:33,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:23:33,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:23:33,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:23:33,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:33" (1/1) ... [2021-11-07 07:23:33,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:23:33,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:33,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:23:33,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:23:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:23:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:23:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:23:33,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:23:33,853 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:23:33,854 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-11-07 07:23:33,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:23:33 BoogieIcfgContainer [2021-11-07 07:23:33,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:23:33,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:23:33,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:23:33,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:23:33,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:23:33" (1/3) ... [2021-11-07 07:23:33,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58db6480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:23:33, skipping insertion in model container [2021-11-07 07:23:33,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:23:33" (2/3) ... [2021-11-07 07:23:33,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58db6480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:23:33, skipping insertion in model container [2021-11-07 07:23:33,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:23:33" (3/3) ... [2021-11-07 07:23:33,863 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound100.c [2021-11-07 07:23:33,878 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:23:33,879 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 07:23:33,948 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:23:33,962 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-11-07 07:23:33,962 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 07:23:33,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 07:23:34,002 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:34,002 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:34,003 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:23:34,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:34,018 INFO L85 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-11-07 07:23:34,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:34,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472646580] [2021-11-07 07:23:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:34,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:34,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:34,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:34,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472646580] [2021-11-07 07:23:34,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472646580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:23:34,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:23:34,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:23:34,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699539852] [2021-11-07 07:23:34,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 07:23:34,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:34,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 07:23:34,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:23:34,189 INFO L87 Difference]: Start difference. First operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-11-07 07:23:34,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:34,203 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-11-07 07:23:34,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 07:23:34,205 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2021-11-07 07:23:34,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:34,212 INFO L225 Difference]: With dead ends: 43 [2021-11-07 07:23:34,213 INFO L226 Difference]: Without dead ends: 19 [2021-11-07 07:23:34,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 07:23:34,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-07 07:23:34,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-07 07:23:34,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:34,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-07 07:23:34,258 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 9 [2021-11-07 07:23:34,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:34,259 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-07 07:23:34,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2021-11-07 07:23:34,261 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-07 07:23:34,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 07:23:34,262 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:34,262 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:34,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:23:34,263 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:23:34,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:34,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-11-07 07:23:34,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:34,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965350439] [2021-11-07 07:23:34,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:34,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:34,307 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:34,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796372872] [2021-11-07 07:23:34,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:34,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:34,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:34,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:34,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:23:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:34,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:23:34,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:34,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:34,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965350439] [2021-11-07 07:23:34,551 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:34,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796372872] [2021-11-07 07:23:34,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796372872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:23:34,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:23:34,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:23:34,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442454017] [2021-11-07 07:23:34,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:23:34,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:34,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:23:34,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:23:34,555 INFO L87 Difference]: Start difference. First operand 19 states and 19 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) [2021-11-07 07:23:34,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:34,603 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-11-07 07:23:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:23:34,604 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 [2021-11-07 07:23:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:34,605 INFO L225 Difference]: With dead ends: 33 [2021-11-07 07:23:34,605 INFO L226 Difference]: Without dead ends: 23 [2021-11-07 07:23:34,606 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:23:34,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-07 07:23:34,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-11-07 07:23:34,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:34,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-11-07 07:23:34,611 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 9 [2021-11-07 07:23:34,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:34,611 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-11-07 07:23:34,611 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) [2021-11-07 07:23:34,612 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-11-07 07:23:34,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:23:34,612 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:34,613 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:34,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:34,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:34,827 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:23:34,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:34,828 INFO L85 PathProgramCache]: Analyzing trace with hash 636965506, now seen corresponding path program 1 times [2021-11-07 07:23:34,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:34,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783008205] [2021-11-07 07:23:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:34,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:34,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:34,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [961038219] [2021-11-07 07:23:34,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:34,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:34,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:34,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:34,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:23:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:34,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 07:23:34,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:35,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:35,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783008205] [2021-11-07 07:23:35,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:35,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961038219] [2021-11-07 07:23:35,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961038219] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:35,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:35,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-07 07:23:35,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527999502] [2021-11-07 07:23:35,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:23:35,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:35,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:23:35,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:23:35,066 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:35,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:35,147 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-11-07 07:23:35,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:23:35,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-11-07 07:23:35,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:35,151 INFO L225 Difference]: With dead ends: 36 [2021-11-07 07:23:35,151 INFO L226 Difference]: Without dead ends: 32 [2021-11-07 07:23:35,152 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:23:35,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-07 07:23:35,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2021-11-07 07:23:35,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-11-07 07:23:35,170 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 12 [2021-11-07 07:23:35,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:35,171 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-07 07:23:35,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:35,171 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-11-07 07:23:35,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 07:23:35,173 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:35,173 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:35,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:35,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:35,396 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:23:35,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:35,397 INFO L85 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 2 times [2021-11-07 07:23:35,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:35,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880933401] [2021-11-07 07:23:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:35,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:35,417 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:35,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943996150] [2021-11-07 07:23:35,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:23:35,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:35,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:35,419 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:35,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:23:35,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:23:35,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:35,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 07:23:35,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:35,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:35,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880933401] [2021-11-07 07:23:35,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:35,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943996150] [2021-11-07 07:23:35,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943996150] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:35,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:35,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-07 07:23:35,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154641952] [2021-11-07 07:23:35,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:23:35,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:35,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:23:35,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:23:35,848 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:36,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:36,013 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-11-07 07:23:36,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:23:36,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 07:23:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:36,014 INFO L225 Difference]: With dead ends: 45 [2021-11-07 07:23:36,014 INFO L226 Difference]: Without dead ends: 41 [2021-11-07 07:23:36,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:23:36,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-07 07:23:36,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2021-11-07 07:23:36,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 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) [2021-11-07 07:23:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2021-11-07 07:23:36,024 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 15 [2021-11-07 07:23:36,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:36,024 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2021-11-07 07:23:36,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:36,025 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2021-11-07 07:23:36,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 07:23:36,026 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:36,027 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:36,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:36,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:36,232 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:23:36,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:36,232 INFO L85 PathProgramCache]: Analyzing trace with hash -531865812, now seen corresponding path program 1 times [2021-11-07 07:23:36,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:36,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584353866] [2021-11-07 07:23:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:36,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:36,261 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:36,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88839620] [2021-11-07 07:23:36,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:36,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:36,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:36,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:36,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:23:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:36,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 07:23:36,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:36,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:36,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:36,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584353866] [2021-11-07 07:23:36,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 07:23:36,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88839620] [2021-11-07 07:23:36,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88839620] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:36,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:23:36,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-11-07 07:23:36,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476956740] [2021-11-07 07:23:36,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:23:36,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:36,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:23:36,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:23:36,569 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:36,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:36,636 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-11-07 07:23:36,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:23:36,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-07 07:23:36,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:36,638 INFO L225 Difference]: With dead ends: 36 [2021-11-07 07:23:36,638 INFO L226 Difference]: Without dead ends: 30 [2021-11-07 07:23:36,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:23:36,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-07 07:23:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-07 07:23:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:36,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-11-07 07:23:36,643 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2021-11-07 07:23:36,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:36,644 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-11-07 07:23:36,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:36,644 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-11-07 07:23:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 07:23:36,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:36,645 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:23:36,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:36,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:36,864 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 07:23:36,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1905056066, now seen corresponding path program 3 times [2021-11-07 07:23:36,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:36,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897926810] [2021-11-07 07:23:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:36,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:36,878 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 07:23:36,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374070255] [2021-11-07 07:23:36,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:23:36,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:36,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:36,880 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:36,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0ef191-9ec4-4f4e-ab4d-5e7741233e64/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process