./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be --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 95c338a7a91abcfb8302c7314ea1de7bdde280884a10e8d539233a34032b9a5d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:41:24,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:41:24,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:41:24,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:41:24,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:41:24,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:41:24,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:41:24,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:41:24,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:41:24,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:41:24,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:41:24,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:41:24,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:41:24,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:41:24,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:41:24,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:41:24,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:41:24,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:41:24,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:41:24,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:41:24,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:41:24,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:41:24,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:41:24,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:41:24,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:41:24,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:41:24,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:41:24,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:41:24,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:41:24,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:41:24,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:41:24,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:41:24,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:41:24,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:41:24,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:41:24,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:41:24,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:41:24,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:41:24,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:41:24,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:41:24,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:41:24,807 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:41:24,863 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:41:24,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:41:24,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:41:24,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:41:24,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:41:24,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:41:24,875 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:41:24,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:41:24,876 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:41:24,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:41:24,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:41:24,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:41:24,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:41:24,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:41:24,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:41:24,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:41:24,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:41:24,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:41:24,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:41:24,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:41:24,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:41:24,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:41:24,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:41:24,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:41:24,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:41:24,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:41:24,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:41:24,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:41:24,883 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:41:24,883 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:41:24,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:41:24,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:41:24,884 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_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95c338a7a91abcfb8302c7314ea1de7bdde280884a10e8d539233a34032b9a5d [2021-10-21 19:41:25,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:41:25,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:41:25,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:41:25,272 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:41:25,273 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:41:25,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2021-10-21 19:41:25,350 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/data/771acb13c/b2220887af104c7ebb563d45333b73d2/FLAG2c3b13eb6 [2021-10-21 19:41:25,943 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:41:25,944 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2021-10-21 19:41:25,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/data/771acb13c/b2220887af104c7ebb563d45333b73d2/FLAG2c3b13eb6 [2021-10-21 19:41:26,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/data/771acb13c/b2220887af104c7ebb563d45333b73d2 [2021-10-21 19:41:26,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:41:26,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:41:26,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:41:26,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:41:26,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:41:26,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:41:26" (1/1) ... [2021-10-21 19:41:26,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ad242af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:26, skipping insertion in model container [2021-10-21 19:41:26,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:41:26" (1/1) ... [2021-10-21 19:41:26,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:41:26,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:41:26,616 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_f1175dc5-ba86-416e-a770-f10923fd9d10/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c[576,589] [2021-10-21 19:41:26,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:41:26,686 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:41:26,705 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_f1175dc5-ba86-416e-a770-f10923fd9d10/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c[576,589] [2021-10-21 19:41:26,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:41:26,752 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:41:26,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:26 WrapperNode [2021-10-21 19:41:26,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:41:26,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:41:26,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:41:26,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:41:26,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:26" (1/1) ... [2021-10-21 19:41:26,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:26" (1/1) ... [2021-10-21 19:41:26,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:41:26,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:41:26,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:41:26,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:41:26,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:26" (1/1) ... [2021-10-21 19:41:26,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:26" (1/1) ... [2021-10-21 19:41:26,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:26" (1/1) ... [2021-10-21 19:41:26,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:26" (1/1) ... [2021-10-21 19:41:26,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:26" (1/1) ... [2021-10-21 19:41:26,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:26" (1/1) ... [2021-10-21 19:41:26,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:26" (1/1) ... [2021-10-21 19:41:26,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:41:26,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:41:26,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:41:26,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:41:26,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:26" (1/1) ... [2021-10-21 19:41:26,899 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:41:26,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:26,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:41:26,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:41:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:41:26,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:41:26,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:41:26,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:41:27,354 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:41:27,354 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-21 19:41:27,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:41:27 BoogieIcfgContainer [2021-10-21 19:41:27,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:41:27,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:41:27,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:41:27,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:41:27,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:41:26" (1/3) ... [2021-10-21 19:41:27,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1149bdee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:41:27, skipping insertion in model container [2021-10-21 19:41:27,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:41:26" (2/3) ... [2021-10-21 19:41:27,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1149bdee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:41:27, skipping insertion in model container [2021-10-21 19:41:27,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:41:27" (3/3) ... [2021-10-21 19:41:27,370 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound2.c [2021-10-21 19:41:27,377 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:41:27,377 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-21 19:41:27,439 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:41:27,448 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 [2021-10-21 19:41:27,448 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-21 19:41:27,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:27,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:41:27,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:27,478 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:27,479 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:27,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:27,487 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-21 19:41:27,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:27,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883208210] [2021-10-21 19:41:27,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:27,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:27,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:27,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883208210] [2021-10-21 19:41:27,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883208210] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:27,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:27,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:41:27,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804744872] [2021-10-21 19:41:27,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:41:27,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:27,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:41:27,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:41:27,805 INFO L87 Difference]: Start difference. First operand has 43 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 42 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:27,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:27,824 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2021-10-21 19:41:27,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:41:27,826 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-21 19:41:27,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:27,836 INFO L225 Difference]: With dead ends: 83 [2021-10-21 19:41:27,837 INFO L226 Difference]: Without dead ends: 39 [2021-10-21 19:41:27,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:41:27,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-21 19:41:27,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-21 19:41:27,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.25) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:27,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-10-21 19:41:27,874 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 11 [2021-10-21 19:41:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:27,875 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-10-21 19:41:27,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:27,876 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-10-21 19:41:27,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:41:27,876 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:27,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:27,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:41:27,877 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:27,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:27,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-21 19:41:27,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:27,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973018206] [2021-10-21 19:41:27,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:27,880 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:27,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:41:27,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753590436] [2021-10-21 19:41:27,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:27,911 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:27,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:27,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:41:27,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:41:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:27,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:41:28,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:28,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:28,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:28,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973018206] [2021-10-21 19:41:28,572 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:41:28,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753590436] [2021-10-21 19:41:28,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753590436] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:28,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:28,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:41:28,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869179560] [2021-10-21 19:41:28,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:41:28,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:28,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:41:28,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:41:28,577 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:28,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:28,842 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-10-21 19:41:28,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:41:28,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-21 19:41:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:28,844 INFO L225 Difference]: With dead ends: 52 [2021-10-21 19:41:28,844 INFO L226 Difference]: Without dead ends: 50 [2021-10-21 19:41:28,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 270.9ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:41:28,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-21 19:41:28,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-10-21 19:41:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:28,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-10-21 19:41:28,855 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 11 [2021-10-21 19:41:28,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:28,856 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-10-21 19:41:28,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:28,856 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-10-21 19:41:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:41:28,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:28,857 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:28,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:29,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:29,074 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:29,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:29,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2021-10-21 19:41:29,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:29,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412975532] [2021-10-21 19:41:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:29,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:29,117 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:41:29,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375279920] [2021-10-21 19:41:29,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:29,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:29,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:29,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:41:29,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:41:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:29,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:41:29,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:29,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:29,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412975532] [2021-10-21 19:41:29,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:41:29,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375279920] [2021-10-21 19:41:29,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375279920] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:29,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:29,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:41:29,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410628882] [2021-10-21 19:41:29,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:41:29,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:29,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:41:29,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:41:29,604 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:29,903 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-10-21 19:41:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:41:29,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-21 19:41:29,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:29,909 INFO L225 Difference]: With dead ends: 69 [2021-10-21 19:41:29,909 INFO L226 Difference]: Without dead ends: 61 [2021-10-21 19:41:29,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 226.6ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:41:29,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-21 19:41:29,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2021-10-21 19:41:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 52 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2021-10-21 19:41:29,935 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 13 [2021-10-21 19:41:29,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:29,936 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2021-10-21 19:41:29,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:29,937 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2021-10-21 19:41:29,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:41:29,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:29,938 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:29,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:30,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-21 19:41:30,165 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:30,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:30,166 INFO L82 PathProgramCache]: Analyzing trace with hash 916732292, now seen corresponding path program 1 times [2021-10-21 19:41:30,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:30,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519003015] [2021-10-21 19:41:30,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:30,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:30,188 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:41:30,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373090950] [2021-10-21 19:41:30,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:30,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:30,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:30,190 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:41:30,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:41:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:30,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 19:41:30,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:30,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:30,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519003015] [2021-10-21 19:41:30,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:41:30,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373090950] [2021-10-21 19:41:30,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373090950] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:30,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:30,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-21 19:41:30,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893531505] [2021-10-21 19:41:30,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:41:30,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:30,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:41:30,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:41:30,648 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:31,070 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2021-10-21 19:41:31,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:41:31,071 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-21 19:41:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:31,073 INFO L225 Difference]: With dead ends: 113 [2021-10-21 19:41:31,073 INFO L226 Difference]: Without dead ends: 107 [2021-10-21 19:41:31,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 328.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:41:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-21 19:41:31,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 75. [2021-10-21 19:41:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 74 states have internal predecessors, (87), 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) [2021-10-21 19:41:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2021-10-21 19:41:31,091 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 16 [2021-10-21 19:41:31,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:31,092 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2021-10-21 19:41:31,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:31,092 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2021-10-21 19:41:31,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 19:41:31,093 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:31,094 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:31,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:31,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:31,310 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:31,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:31,311 INFO L82 PathProgramCache]: Analyzing trace with hash 2015957290, now seen corresponding path program 1 times [2021-10-21 19:41:31,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:31,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161729332] [2021-10-21 19:41:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:31,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:31,335 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:41:31,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090885998] [2021-10-21 19:41:31,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:31,336 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:31,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:31,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:41:31,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:41:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:31,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:41:31,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:31,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:31,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161729332] [2021-10-21 19:41:31,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:41:31,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090885998] [2021-10-21 19:41:31,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090885998] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:41:31,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:41:31,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:41:31,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44454721] [2021-10-21 19:41:31,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:41:31,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:31,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:41:31,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:41:31,684 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:31,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:31,819 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2021-10-21 19:41:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:41:31,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-21 19:41:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:31,828 INFO L225 Difference]: With dead ends: 75 [2021-10-21 19:41:31,828 INFO L226 Difference]: Without dead ends: 73 [2021-10-21 19:41:31,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:41:31,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-21 19:41:31,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-21 19:41:31,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 72 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2021-10-21 19:41:31,851 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 20 [2021-10-21 19:41:31,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:31,852 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2021-10-21 19:41:31,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:31,852 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2021-10-21 19:41:31,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-21 19:41:31,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:31,854 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:31,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:32,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:32,082 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:32,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:32,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1552659725, now seen corresponding path program 1 times [2021-10-21 19:41:32,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:32,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877289641] [2021-10-21 19:41:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:32,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:32,101 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:41:32,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621682154] [2021-10-21 19:41:32,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:32,102 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:32,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:32,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:41:32,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:41:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:32,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-21 19:41:32,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:32,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:32,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877289641] [2021-10-21 19:41:32,786 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:41:32,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621682154] [2021-10-21 19:41:32,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621682154] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:41:32,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:41:32,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:41:32,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606853904] [2021-10-21 19:41:32,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:41:32,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:32,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:41:32,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:41:32,789 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2021-10-21 19:41:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:33,459 INFO L93 Difference]: Finished difference Result 133 states and 148 transitions. [2021-10-21 19:41:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:41:33,459 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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 25 [2021-10-21 19:41:33,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:33,461 INFO L225 Difference]: With dead ends: 133 [2021-10-21 19:41:33,461 INFO L226 Difference]: Without dead ends: 95 [2021-10-21 19:41:33,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 507.2ms TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:41:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-10-21 19:41:33,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 56. [2021-10-21 19:41:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 55 states have internal predecessors, (59), 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) [2021-10-21 19:41:33,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-10-21 19:41:33,473 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 25 [2021-10-21 19:41:33,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:33,474 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-10-21 19:41:33,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2021-10-21 19:41:33,474 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-10-21 19:41:33,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-21 19:41:33,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:33,475 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:33,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:33,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-21 19:41:33,706 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:33,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:33,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1755069467, now seen corresponding path program 1 times [2021-10-21 19:41:33,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:33,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855893437] [2021-10-21 19:41:33,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:33,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:33,722 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:41:33,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851160244] [2021-10-21 19:41:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:33,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:33,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:33,724 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:41:33,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:41:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:33,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-21 19:41:33,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:34,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:34,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855893437] [2021-10-21 19:41:34,505 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:41:34,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851160244] [2021-10-21 19:41:34,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851160244] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:41:34,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:41:34,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 19:41:34,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582772762] [2021-10-21 19:41:34,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:41:34,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:41:34,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:41:34,512 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:34,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:34,771 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2021-10-21 19:41:34,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:41:34,772 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-21 19:41:34,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:34,773 INFO L225 Difference]: With dead ends: 98 [2021-10-21 19:41:34,773 INFO L226 Difference]: Without dead ends: 60 [2021-10-21 19:41:34,774 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 178.2ms TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:41:34,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-21 19:41:34,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2021-10-21 19:41:34,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 55 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2021-10-21 19:41:34,785 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 26 [2021-10-21 19:41:34,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:34,785 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2021-10-21 19:41:34,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:34,786 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2021-10-21 19:41:34,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-21 19:41:34,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:41:34,788 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:41:34,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:35,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-21 19:41:35,014 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-21 19:41:35,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:41:35,015 INFO L82 PathProgramCache]: Analyzing trace with hash -797667638, now seen corresponding path program 1 times [2021-10-21 19:41:35,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:41:35,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266816857] [2021-10-21 19:41:35,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:35,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:41:35,032 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:41:35,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12390205] [2021-10-21 19:41:35,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:41:35,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:35,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:41:35,034 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:41:35,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:41:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:41:35,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-21 19:41:35,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:41:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:41:36,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:41:36,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266816857] [2021-10-21 19:41:36,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:41:36,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12390205] [2021-10-21 19:41:36,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12390205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:41:36,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:41:36,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:41:36,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671429042] [2021-10-21 19:41:36,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:41:36,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:41:36,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:41:36,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:41:36,206 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:36,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:41:36,470 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2021-10-21 19:41:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:41:36,470 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-21 19:41:36,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:41:36,471 INFO L225 Difference]: With dead ends: 67 [2021-10-21 19:41:36,471 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:41:36,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 233.1ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:41:36,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:41:36,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:41:36,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:41:36,473 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-21 19:41:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:41:36,473 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:41:36,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:41:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:41:36,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:41:36,476 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:36,477 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:36,477 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:36,478 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:36,478 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:36,478 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:36,478 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:41:36,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:41:36,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:41:36,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:41:36,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:41:36,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:41:36,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:41:36,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:41:36,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:41:36,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:41:36,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:41:36,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:41:36,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:41:36,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:41:37,873 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:41:37,873 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-10-21 19:41:37,873 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2021-10-21 19:41:37,873 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2021-10-21 19:41:37,873 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:41:37,874 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:41:37,874 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:41:37,874 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-21 19:41:37,874 INFO L857 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-10-21 19:41:37,874 INFO L857 garLoopResultBuilder]: For program point L12-4(line 12) no Hoare annotation was computed. [2021-10-21 19:41:37,874 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:41:37,875 INFO L853 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse2 (<= ULTIMATE.start_main_~y~0 2)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (<= ULTIMATE.start_main_~x~0 2)) (.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse6 (* 2 ULTIMATE.start_main_~y~0)) (.cse5 (<= 0 ULTIMATE.start_main_~x~0))) (let ((.cse0 (let ((.cse7 (<= ULTIMATE.start_main_~r~0 2)) (.cse8 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and .cse1 .cse7 .cse8 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~a~0 1) .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse1 .cse7 .cse8 .cse3 (<= .cse6 2) .cse4 (= ULTIMATE.start_main_~b~0 .cse6) (= ULTIMATE.start_main_~a~0 2) .cse5))))) (or (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) .cse0 (= ULTIMATE.start_main_~q~0 1)) (and (= ULTIMATE.start_main_~a~0 0) .cse1 (= ULTIMATE.start_main_~b~0 0) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~q~0 0) .cse5 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~q~0 2) (<= (+ ULTIMATE.start_main_~r~0 .cse6) ULTIMATE.start_main_~x~0) .cse0 (<= 0 ULTIMATE.start_main_~r~0))))) [2021-10-21 19:41:37,875 INFO L857 garLoopResultBuilder]: For program point L38-3(lines 38 62) no Hoare annotation was computed. [2021-10-21 19:41:37,875 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:41:37,875 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~x~0 2)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (let ((.cse6 (* 2 ULTIMATE.start_main_~y~0))) (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~b~0 .cse6) (= ULTIMATE.start_main_~a~0 2) .cse4 (<= .cse6 ULTIMATE.start_main_~r~0) .cse5)))) [2021-10-21 19:41:37,876 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2021-10-21 19:41:37,876 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:41:37,876 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:41:37,876 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse2 (<= ULTIMATE.start_main_~y~0 2)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (<= ULTIMATE.start_main_~x~0 2)) (.cse4 (<= 1 ULTIMATE.start_main_~y~0)) (.cse6 (* 2 ULTIMATE.start_main_~y~0)) (.cse5 (<= 0 ULTIMATE.start_main_~x~0))) (let ((.cse0 (let ((.cse7 (<= ULTIMATE.start_main_~r~0 2)) (.cse8 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and .cse1 .cse7 .cse8 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~a~0 1) .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse1 .cse7 .cse8 .cse3 (<= .cse6 2) .cse4 (= ULTIMATE.start_main_~b~0 .cse6) (= ULTIMATE.start_main_~a~0 2) .cse5))))) (or (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) .cse0 (= ULTIMATE.start_main_~q~0 1)) (and .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~q~0 0) .cse5 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (and (= ULTIMATE.start_main_~q~0 2) (<= (+ ULTIMATE.start_main_~r~0 .cse6) ULTIMATE.start_main_~x~0) .cse0 (<= 0 ULTIMATE.start_main_~r~0))))) [2021-10-21 19:41:37,876 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:41:37,877 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 42 43) the Hoare annotation is: (let ((.cse7 (* 2 ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (<= ULTIMATE.start_main_~y~0 2)) (.cse4 (<= ULTIMATE.start_main_~x~0 2)) (.cse5 (<= 1 ULTIMATE.start_main_~y~0)) (.cse6 (<= 0 ULTIMATE.start_main_~x~0))) (let ((.cse0 (let ((.cse8 (<= ULTIMATE.start_main_~r~0 2))) (or (and .cse2 .cse8 .cse4 (<= .cse7 2) .cse5 (= ULTIMATE.start_main_~b~0 .cse7) (= ULTIMATE.start_main_~a~0 2) .cse6) (and .cse2 .cse8 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~a~0 1) .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))))) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) .cse0 .cse1 (= ULTIMATE.start_main_~q~0 1)) (and .cse2 .cse1 .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~q~0 0) .cse6 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~q~0 2) (<= (+ ULTIMATE.start_main_~r~0 .cse7) ULTIMATE.start_main_~x~0) (<= 0 ULTIMATE.start_main_~r~0))))) [2021-10-21 19:41:37,877 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:41:37,877 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~x~0 2)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (let ((.cse6 (* 2 ULTIMATE.start_main_~y~0))) (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~b~0 .cse6) (= ULTIMATE.start_main_~a~0 2) .cse4 (<= .cse6 ULTIMATE.start_main_~r~0) .cse5)))) [2021-10-21 19:41:37,877 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:41:37,877 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= ULTIMATE.start_main_~x~0 2)) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (= ULTIMATE.start_main_~q~0 0))) (or (let ((.cse3 (* 2 ULTIMATE.start_main_~y~0))) (and .cse0 .cse1 (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) .cse2 (= ULTIMATE.start_main_~b~0 .cse3) (= ULTIMATE.start_main_~a~0 2) .cse4 (<= .cse3 ULTIMATE.start_main_~r~0))) (and .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 .cse4 (= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-21 19:41:37,878 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:41:37,878 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 52 53) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~x~0 2)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse5 (= ULTIMATE.start_main_~q~0 0))) (or (let ((.cse4 (* 2 ULTIMATE.start_main_~y~0))) (and .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) .cse3 (= ULTIMATE.start_main_~b~0 .cse4) (= ULTIMATE.start_main_~a~0 2) .cse5 (<= .cse4 ULTIMATE.start_main_~r~0))) (and .cse0 .cse1 .cse2 .cse3 .cse5 (= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2021-10-21 19:41:37,878 INFO L860 garLoopResultBuilder]: At program point L65(lines 22 66) the Hoare annotation is: true [2021-10-21 19:41:37,878 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:41:37,878 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:41:37,878 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (* 2 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0) (<= ULTIMATE.start_main_~x~0 2) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-10-21 19:41:37,878 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-21 19:41:37,879 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-21 19:41:37,879 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:41:37,879 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:41:37,879 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:41:37,879 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:41:37,879 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:41:37,879 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:41:37,880 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:41:37,880 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-21 19:41:37,880 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:41:37,880 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-21 19:41:37,887 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:41:37,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:41:37 BoogieIcfgContainer [2021-10-21 19:41:37,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:41:37,920 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:41:37,920 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:41:37,920 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:41:37,921 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:41:27" (3/4) ... [2021-10-21 19:41:37,925 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:41:37,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-21 19:41:37,939 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:41:37,940 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:41:37,940 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:41:37,993 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:41:37,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:41:37,996 INFO L168 Benchmark]: Toolchain (without parser) took 11683.03 ms. Allocated memory was 119.5 MB in the beginning and 153.1 MB in the end (delta: 33.6 MB). Free memory was 92.5 MB in the beginning and 80.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 45.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:37,996 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory is still 51.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:41:37,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.50 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 95.9 MB in the end (delta: -3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:37,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.34 ms. Allocated memory is still 119.5 MB. Free memory was 95.9 MB in the beginning and 94.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:37,998 INFO L168 Benchmark]: Boogie Preprocessor took 60.88 ms. Allocated memory is still 119.5 MB. Free memory was 94.2 MB in the beginning and 93.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:37,998 INFO L168 Benchmark]: RCFGBuilder took 476.22 ms. Allocated memory is still 119.5 MB. Free memory was 93.1 MB in the beginning and 82.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:37,999 INFO L168 Benchmark]: TraceAbstraction took 10559.34 ms. Allocated memory was 119.5 MB in the beginning and 153.1 MB in the end (delta: 33.6 MB). Free memory was 81.7 MB in the beginning and 83.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 75.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:38,000 INFO L168 Benchmark]: Witness Printer took 74.02 ms. Allocated memory is still 153.1 MB. Free memory was 83.5 MB in the beginning and 80.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:41:38,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory is still 51.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 435.50 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 95.9 MB in the end (delta: -3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.34 ms. Allocated memory is still 119.5 MB. Free memory was 95.9 MB in the beginning and 94.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.88 ms. Allocated memory is still 119.5 MB. Free memory was 94.2 MB in the beginning and 93.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 476.22 ms. Allocated memory is still 119.5 MB. Free memory was 93.1 MB in the beginning and 82.0 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10559.34 ms. Allocated memory was 119.5 MB in the beginning and 153.1 MB in the end (delta: 33.6 MB). Free memory was 81.7 MB in the beginning and 83.5 MB in the end (delta: -1.9 MB). Peak memory consumption was 75.2 MB. Max. memory is 16.1 GB. * Witness Printer took 74.02 ms. Allocated memory is still 153.1 MB. Free memory was 83.5 MB in the beginning and 80.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 10450.1ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 21.2ms, AutomataDifference: 2417.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1174.2ms, InitialAbstractionConstructionTime: 15.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 206 SDtfs, 960 SDslu, 382 SDs, 0 SdLazy, 795 SolverSat, 156 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 782.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1822.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=4, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 111.8ms AutomataMinimizationTime, 8 MinimizatonAttempts, 92 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 30 NumberOfFragments, 804 HoareAnnotationTreeSize, 10 FomulaSimplifications, 1342 FormulaSimplificationTreeSizeReduction, 140.3ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 280 FormulaSimplificationTreeSizeReductionInter, 1023.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 73.5ms SsaConstructionTime, 216.9ms SatisfiabilityAnalysisTime, 3709.7ms InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 1610 SizeOfPredicates, 60 NumberOfNonLiveVariables, 673 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 0/17 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((cond == 1 && x <= 2) && r <= x) && 1 <= y) && b == 2 * y) && a == 2) && q == 0) && 2 * y <= r) || ((((((((cond == 1 && 1 <= cond) && x <= 2) && 1 <= y) && q == 0) && a == 1) && y <= r) && r == x) && b == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((cond == 1 && 1 <= cond) && 2 * b <= r) && x <= 2) && 1 <= y) && q == 0) && a == 1) && r == x) && b == y - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && 1 <= cond) && x <= 2) && r <= x) && 1 <= y) && b == 2 * y) && a == 2) && q == 0) && 2 * y <= r) || ((((((((cond == 1 && 1 <= cond) && x <= 2) && 1 <= y) && q == 0) && a == 1) && y <= r) && r == x) && b == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && 1 <= cond) && x <= 2) && 1 <= y) && q == 0) && a == 1) && y <= r) && r == x) && b == y) || ((((((((cond == 1 && 1 <= cond) && x <= 2) && 1 <= y) && b == 2 * y) && a == 2) && q == 0) && 2 * y <= r) && r == x) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((x == r + y && 2 * r < x) && y <= x) && ((((((((cond == 1 && r <= 2) && x <= 2) && 2 * y <= 2) && 1 <= y) && b == 2 * y) && a == 2) && 0 <= x) || (((((((cond == 1 && r <= 2) && y <= 2) && x <= 2) && 1 <= y) && a == 1) && 0 <= x) && b == y))) && 1 <= cond) && q == 1) || (((((((cond == 1 && 1 <= cond) && y <= 2) && x <= 2) && 1 <= y) && q == 0) && 0 <= x) && r == x)) || ((((((((((((cond == 1 && r <= 2) && x <= 2) && 2 * y <= 2) && 1 <= y) && b == 2 * y) && a == 2) && 0 <= x) || (((((((cond == 1 && r <= 2) && y <= 2) && x <= 2) && 1 <= y) && a == 1) && 0 <= x) && b == y)) && 1 <= cond) && q == 2) && r + 2 * y <= x) && 0 <= r) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && 1 <= cond) && x <= 2) && 1 <= y) && q == 0) && a == 1) && y <= r) && r == x) && b == y) || ((((((((cond == 1 && 1 <= cond) && x <= 2) && 1 <= y) && b == 2 * y) && a == 2) && q == 0) && 2 * y <= r) && r == x) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((x == r + y && 2 * r < x) && y <= x) && (((((((((cond == 1 && r <= 2) && 1 <= cond) && y <= 2) && x <= 2) && 1 <= y) && a == 1) && 0 <= x) && b == y) || ((((((((cond == 1 && r <= 2) && 1 <= cond) && x <= 2) && 2 * y <= 2) && 1 <= y) && b == 2 * y) && a == 2) && 0 <= x))) && q == 1) || ((((((((a == 0 && cond == 1) && b == 0) && y <= 2) && x <= 2) && 1 <= y) && q == 0) && 0 <= x) && r == x)) || (((q == 2 && r + 2 * y <= x) && (((((((((cond == 1 && r <= 2) && 1 <= cond) && y <= 2) && x <= 2) && 1 <= y) && a == 1) && 0 <= x) && b == y) || ((((((((cond == 1 && r <= 2) && 1 <= cond) && x <= 2) && 2 * y <= 2) && 1 <= y) && b == 2 * y) && a == 2) && 0 <= x))) && 0 <= r) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((x == r + y && 2 * r < x) && y <= x) && (((((((((cond == 1 && r <= 2) && 1 <= cond) && y <= 2) && x <= 2) && 1 <= y) && a == 1) && 0 <= x) && b == y) || ((((((((cond == 1 && r <= 2) && 1 <= cond) && x <= 2) && 2 * y <= 2) && 1 <= y) && b == 2 * y) && a == 2) && 0 <= x))) && q == 1) || ((((((cond == 1 && y <= 2) && x <= 2) && 1 <= y) && q == 0) && 0 <= x) && r == x)) || (((q == 2 && r + 2 * y <= x) && (((((((((cond == 1 && r <= 2) && 1 <= cond) && y <= 2) && x <= 2) && 1 <= y) && a == 1) && 0 <= x) && b == y) || ((((((((cond == 1 && r <= 2) && 1 <= cond) && x <= 2) && 2 * y <= 2) && 1 <= y) && b == 2 * y) && a == 2) && 0 <= x))) && 0 <= r) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 19:41:38,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1175dc5-ba86-416e-a770-f10923fd9d10/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...