./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3 --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 ac0ddd59582a3509504d1d53a5eb7b96958f7615 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:34:46,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:34:46,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:34:46,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:34:46,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:34:46,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:34:46,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:34:46,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:34:46,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:34:46,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:34:46,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:34:46,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:34:46,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:34:46,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:34:46,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:34:46,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:34:46,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:34:46,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:34:46,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:34:46,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:34:46,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:34:46,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:34:46,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:34:46,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:34:46,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:34:46,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:34:46,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:34:46,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:34:46,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:34:46,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:34:46,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:34:46,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:34:46,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:34:46,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:34:46,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:34:46,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:34:46,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:34:46,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:34:46,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:34:46,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:34:46,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:34:46,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:34:46,332 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:34:46,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:34:46,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:34:46,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:34:46,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:34:46,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:34:46,335 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:34:46,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:34:46,336 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:34:46,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:34:46,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:34:46,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:34:46,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:34:46,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:34:46,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:34:46,338 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:34:46,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:34:46,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:34:46,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:34:46,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:34:46,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:34:46,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:34:46,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:34:46,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:34:46,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:34:46,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:34:46,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:34:46,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:34:46,343 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:34:46,344 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:34:46,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:34:46,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:34:46,345 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_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac0ddd59582a3509504d1d53a5eb7b96958f7615 [2021-10-15 19:34:46,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:34:46,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:34:46,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:34:46,654 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:34:46,655 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:34:46,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.c [2021-10-15 19:34:46,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/data/f465d12d8/7400270ef86b4ee7b9d8836b1f66c5b5/FLAGcc7607871 [2021-10-15 19:34:47,147 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:34:47,148 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.c [2021-10-15 19:34:47,154 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/data/f465d12d8/7400270ef86b4ee7b9d8836b1f66c5b5/FLAGcc7607871 [2021-10-15 19:34:47,546 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/data/f465d12d8/7400270ef86b4ee7b9d8836b1f66c5b5 [2021-10-15 19:34:47,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:34:47,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:34:47,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:34:47,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:34:47,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:34:47,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:34:47" (1/1) ... [2021-10-15 19:34:47,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b873e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:47, skipping insertion in model container [2021-10-15 19:34:47,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:34:47" (1/1) ... [2021-10-15 19:34:47,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:34:47,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:34:47,750 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_86fc8196-9cf1-4716-a273-a2d061bd0e3b/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.c[525,538] [2021-10-15 19:34:47,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:34:47,771 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:34:47,782 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_86fc8196-9cf1-4716-a273-a2d061bd0e3b/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound100.c[525,538] [2021-10-15 19:34:47,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:34:47,801 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:34:47,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:47 WrapperNode [2021-10-15 19:34:47,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:34:47,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:34:47,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:34:47,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:34:47,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:47" (1/1) ... [2021-10-15 19:34:47,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:47" (1/1) ... [2021-10-15 19:34:47,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:34:47,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:34:47,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:34:47,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:34:47,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:47" (1/1) ... [2021-10-15 19:34:47,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:47" (1/1) ... [2021-10-15 19:34:47,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:47" (1/1) ... [2021-10-15 19:34:47,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:47" (1/1) ... [2021-10-15 19:34:47,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:47" (1/1) ... [2021-10-15 19:34:47,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:47" (1/1) ... [2021-10-15 19:34:47,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:47" (1/1) ... [2021-10-15 19:34:47,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:34:47,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:34:47,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:34:47,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:34:47,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:47" (1/1) ... [2021-10-15 19:34:47,874 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:34:47,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:34:47,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:34:47,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:34:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:34:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:34:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:34:47,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:34:48,141 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:34:48,142 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-15 19:34:48,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:34:48 BoogieIcfgContainer [2021-10-15 19:34:48,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:34:48,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:34:48,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:34:48,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:34:48,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:34:47" (1/3) ... [2021-10-15 19:34:48,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3adb6dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:34:48, skipping insertion in model container [2021-10-15 19:34:48,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:34:47" (2/3) ... [2021-10-15 19:34:48,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3adb6dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:34:48, skipping insertion in model container [2021-10-15 19:34:48,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:34:48" (3/3) ... [2021-10-15 19:34:48,152 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound100.c [2021-10-15 19:34:48,157 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:34:48,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-15 19:34:48,204 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:34:48,211 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=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 [2021-10-15 19:34:48,211 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-15 19:34:48,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 28 transitions, 56 flow [2021-10-15 19:34:48,242 INFO L129 PetriNetUnfolder]: 8/28 cut-off events. [2021-10-15 19:34:48,243 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:34:48,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 28 events. 8/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:34:48,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 28 transitions, 56 flow [2021-10-15 19:34:48,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 17 places, 23 transitions, 46 flow [2021-10-15 19:34:48,255 INFO L129 PetriNetUnfolder]: 7/21 cut-off events. [2021-10-15 19:34:48,255 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:34:48,256 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:48,256 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:34:48,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:34:48,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:48,262 INFO L82 PathProgramCache]: Analyzing trace with hash 2105589141, now seen corresponding path program 1 times [2021-10-15 19:34:48,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:48,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483354692] [2021-10-15 19:34:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:48,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:48,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:34:48,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:48,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483354692] [2021-10-15 19:34:48,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483354692] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:48,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:48,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:34:48,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377868126] [2021-10-15 19:34:48,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:34:48,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:48,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:34:48,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:34:48,504 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 28 [2021-10-15 19:34:48,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 23 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2021-10-15 19:34:48,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:48,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 28 [2021-10-15 19:34:48,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:48,517 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-10-15 19:34:48,517 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:34:48,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 17 events. 1/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 5/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2021-10-15 19:34:48,519 INFO L132 encePairwiseOnDemand]: 22/28 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2021-10-15 19:34:48,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 17 transitions, 34 flow [2021-10-15 19:34:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:34:48,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:34:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 48 transitions. [2021-10-15 19:34:48,531 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2021-10-15 19:34:48,531 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 48 transitions. [2021-10-15 19:34:48,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 48 transitions. [2021-10-15 19:34:48,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:48,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 48 transitions. [2021-10-15 19:34:48,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2021-10-15 19:34:48,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-10-15 19:34:48,541 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2021-10-15 19:34:48,543 INFO L186 Difference]: Start difference. First operand has 17 places, 23 transitions, 46 flow. Second operand 2 states and 48 transitions. [2021-10-15 19:34:48,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 17 transitions, 34 flow [2021-10-15 19:34:48,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 34 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:34:48,548 INFO L242 Difference]: Finished difference. Result has 18 places, 17 transitions, 34 flow [2021-10-15 19:34:48,550 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=18, PETRI_TRANSITIONS=17} [2021-10-15 19:34:48,550 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2021-10-15 19:34:48,551 INFO L470 AbstractCegarLoop]: Abstraction has has 18 places, 17 transitions, 34 flow [2021-10-15 19:34:48,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2021-10-15 19:34:48,551 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:48,552 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:34:48,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:34:48,552 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:34:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:48,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-15 19:34:48,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:48,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048076644] [2021-10-15 19:34:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:48,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:48,579 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:34:48,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [414480650] [2021-10-15 19:34:48,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:48,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:34:48,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:34:48,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:34:48,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:34:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:48,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-15 19:34:48,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:34:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:34:48,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:48,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048076644] [2021-10-15 19:34:48,837 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:34:48,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414480650] [2021-10-15 19:34:48,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414480650] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:34:48,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:34:48,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:34:48,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493530405] [2021-10-15 19:34:48,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:34:48,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:48,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:34:48,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:34:48,842 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 28 [2021-10-15 19:34:48,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 17 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:48,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:48,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 28 [2021-10-15 19:34:48,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:48,890 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2021-10-15 19:34:48,890 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:34:48,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 23 events. 1/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 37. Up to 10 conditions per place. [2021-10-15 19:34:48,891 INFO L132 encePairwiseOnDemand]: 23/28 looper letters, 9 selfloop transitions, 4 changer transitions 1/22 dead transitions. [2021-10-15 19:34:48,891 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 22 transitions, 72 flow [2021-10-15 19:34:48,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:34:48,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:34:48,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2021-10-15 19:34:48,894 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2021-10-15 19:34:48,894 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 66 transitions. [2021-10-15 19:34:48,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 66 transitions. [2021-10-15 19:34:48,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:48,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 66 transitions. [2021-10-15 19:34:48,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-10-15 19:34:48,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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) [2021-10-15 19:34:48,898 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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) [2021-10-15 19:34:48,898 INFO L186 Difference]: Start difference. First operand has 18 places, 17 transitions, 34 flow. Second operand 5 states and 66 transitions. [2021-10-15 19:34:48,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 22 transitions, 72 flow [2021-10-15 19:34:48,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:34:48,901 INFO L242 Difference]: Finished difference. Result has 23 places, 20 transitions, 58 flow [2021-10-15 19:34:48,901 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2021-10-15 19:34:48,902 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, 6 predicate places. [2021-10-15 19:34:48,902 INFO L470 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 58 flow [2021-10-15 19:34:48,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:48,903 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:48,903 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:34:48,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-15 19:34:49,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:34:49,117 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:34:49,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:49,118 INFO L82 PathProgramCache]: Analyzing trace with hash -937492348, now seen corresponding path program 1 times [2021-10-15 19:34:49,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:49,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678447918] [2021-10-15 19:34:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:49,119 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:49,140 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:34:49,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396098953] [2021-10-15 19:34:49,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:49,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:34:49,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:34:49,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:34:49,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 19:34:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:34:49,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-15 19:34:49,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:34:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:34:49,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:49,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678447918] [2021-10-15 19:34:49,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:34:49,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396098953] [2021-10-15 19:34:49,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396098953] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:34:49,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:34:49,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-15 19:34:49,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137300765] [2021-10-15 19:34:49,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:34:49,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:49,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:34:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:34:49,484 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 28 [2021-10-15 19:34:49,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2021-10-15 19:34:49,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:49,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 28 [2021-10-15 19:34:49,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:49,582 INFO L129 PetriNetUnfolder]: 1/28 cut-off events. [2021-10-15 19:34:49,582 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:34:49,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 28 events. 1/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 2/30 useless extension candidates. Maximal degree in co-relation 57. Up to 10 conditions per place. [2021-10-15 19:34:49,583 INFO L132 encePairwiseOnDemand]: 23/28 looper letters, 11 selfloop transitions, 5 changer transitions 2/26 dead transitions. [2021-10-15 19:34:49,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 26 transitions, 110 flow [2021-10-15 19:34:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:34:49,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:34:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2021-10-15 19:34:49,585 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2021-10-15 19:34:49,585 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 80 transitions. [2021-10-15 19:34:49,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 80 transitions. [2021-10-15 19:34:49,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:49,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 80 transitions. [2021-10-15 19:34:49,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:49,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 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) [2021-10-15 19:34:49,589 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 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) [2021-10-15 19:34:49,589 INFO L186 Difference]: Start difference. First operand has 23 places, 20 transitions, 58 flow. Second operand 6 states and 80 transitions. [2021-10-15 19:34:49,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 26 transitions, 110 flow [2021-10-15 19:34:49,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:34:49,593 INFO L242 Difference]: Finished difference. Result has 30 places, 22 transitions, 88 flow [2021-10-15 19:34:49,593 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=88, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2021-10-15 19:34:49,593 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, 13 predicate places. [2021-10-15 19:34:49,593 INFO L470 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 88 flow [2021-10-15 19:34:49,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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) [2021-10-15 19:34:49,594 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:49,594 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:34:49,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:34:49,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:34:49,814 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:34:49,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:49,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1342734009, now seen corresponding path program 2 times [2021-10-15 19:34:49,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:49,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534409988] [2021-10-15 19:34:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:49,815 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:49,833 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:34:49,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1613718818] [2021-10-15 19:34:49,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:34:49,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:34:49,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:34:49,835 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:34:49,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-15 19:34:49,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 19:34:49,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:34:50,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-15 19:34:50,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:34:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:34:50,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:34:50,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534409988] [2021-10-15 19:34:50,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:34:50,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613718818] [2021-10-15 19:34:50,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613718818] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:34:50,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:34:50,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-15 19:34:50,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581720950] [2021-10-15 19:34:50,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:34:50,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:34:50,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:34:50,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:34:50,785 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 28 [2021-10-15 19:34:50,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 88 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:50,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:34:50,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 28 [2021-10-15 19:34:50,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:34:51,082 INFO L129 PetriNetUnfolder]: 1/33 cut-off events. [2021-10-15 19:34:51,083 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-10-15 19:34:51,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 33 events. 1/33 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 2/35 useless extension candidates. Maximal degree in co-relation 81. Up to 10 conditions per place. [2021-10-15 19:34:51,083 INFO L132 encePairwiseOnDemand]: 23/28 looper letters, 13 selfloop transitions, 6 changer transitions 3/30 dead transitions. [2021-10-15 19:34:51,084 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 156 flow [2021-10-15 19:34:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:34:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:34:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2021-10-15 19:34:51,087 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2021-10-15 19:34:51,087 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 94 transitions. [2021-10-15 19:34:51,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 94 transitions. [2021-10-15 19:34:51,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:34:51,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 94 transitions. [2021-10-15 19:34:51,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:51,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 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) [2021-10-15 19:34:51,090 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 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) [2021-10-15 19:34:51,090 INFO L186 Difference]: Start difference. First operand has 30 places, 22 transitions, 88 flow. Second operand 7 states and 94 transitions. [2021-10-15 19:34:51,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 156 flow [2021-10-15 19:34:51,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 146 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-15 19:34:51,094 INFO L242 Difference]: Finished difference. Result has 35 places, 24 transitions, 114 flow [2021-10-15 19:34:51,094 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=114, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2021-10-15 19:34:51,094 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, 18 predicate places. [2021-10-15 19:34:51,094 INFO L470 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 114 flow [2021-10-15 19:34:51,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:34:51,095 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:34:51,095 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:34:51,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:34:51,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:34:51,313 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:34:51,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:34:51,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1931585436, now seen corresponding path program 3 times [2021-10-15 19:34:51,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:34:51,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425023519] [2021-10-15 19:34:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:34:51,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:34:51,332 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:34:51,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794690045] [2021-10-15 19:34:51,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 19:34:51,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:34:51,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:34:51,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:34:51,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-15 19:34:51,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-15 19:34:51,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:34:51,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-15 19:34:51,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:35:04,930 WARN L207 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 28 [2021-10-15 19:35:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:35:15,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:35:15,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425023519] [2021-10-15 19:35:15,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:35:15,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794690045] [2021-10-15 19:35:15,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794690045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:35:15,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:35:15,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-15 19:35:15,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762689069] [2021-10-15 19:35:15,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:35:15,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:35:15,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:35:15,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=36, Unknown=1, NotChecked=0, Total=56 [2021-10-15 19:35:15,490 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 28 [2021-10-15 19:35:15,491 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 114 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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) [2021-10-15 19:35:15,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:35:15,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 28 [2021-10-15 19:35:15,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:35:38,278 WARN L207 SmtUtils]: Spent 14.13 s on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2021-10-15 19:36:08,261 WARN L207 SmtUtils]: Spent 19.10 s on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2021-10-15 19:36:12,359 INFO L129 PetriNetUnfolder]: 1/29 cut-off events. [2021-10-15 19:36:12,359 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2021-10-15 19:36:12,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 29 events. 1/29 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 76. Up to 7 conditions per place. [2021-10-15 19:36:12,359 INFO L132 encePairwiseOnDemand]: 22/28 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2021-10-15 19:36:12,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 24 transitions, 138 flow [2021-10-15 19:36:12,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:36:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:36:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2021-10-15 19:36:12,361 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2021-10-15 19:36:12,361 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 97 transitions. [2021-10-15 19:36:12,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 97 transitions. [2021-10-15 19:36:12,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:36:12,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 97 transitions. [2021-10-15 19:36:12,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 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) [2021-10-15 19:36:12,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 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) [2021-10-15 19:36:12,364 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 28.0) internal successors, (252), 9 states have internal predecessors, (252), 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) [2021-10-15 19:36:12,364 INFO L186 Difference]: Start difference. First operand has 35 places, 24 transitions, 114 flow. Second operand 8 states and 97 transitions. [2021-10-15 19:36:12,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 24 transitions, 138 flow [2021-10-15 19:36:12,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 122 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-10-15 19:36:12,367 INFO L242 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2021-10-15 19:36:12,367 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2021-10-15 19:36:12,367 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, 17 predicate places. [2021-10-15 19:36:12,367 INFO L470 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2021-10-15 19:36:12,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 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) [2021-10-15 19:36:12,376 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:36:12,376 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:36:12,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:36:12,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:36:12,581 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:36:12,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:36:12 BoogieIcfgContainer [2021-10-15 19:36:12,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:36:12,586 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:36:12,586 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:36:12,587 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:36:12,587 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:34:48" (3/4) ... [2021-10-15 19:36:12,590 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:36:12,600 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-15 19:36:12,601 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:36:12,601 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:36:12,601 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:36:12,671 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:36:12,671 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:36:12,672 INFO L168 Benchmark]: Toolchain (without parser) took 85122.22 ms. Allocated memory was 96.5 MB in the beginning and 138.4 MB in the end (delta: 41.9 MB). Free memory was 54.5 MB in the beginning and 57.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:36:12,673 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 71.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:36:12,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.98 ms. Allocated memory is still 96.5 MB. Free memory was 54.3 MB in the beginning and 70.9 MB in the end (delta: -16.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:36:12,674 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.72 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 69.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:36:12,674 INFO L168 Benchmark]: Boogie Preprocessor took 21.55 ms. Allocated memory is still 96.5 MB. Free memory was 69.5 MB in the beginning and 68.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:36:12,675 INFO L168 Benchmark]: RCFGBuilder took 284.46 ms. Allocated memory is still 96.5 MB. Free memory was 68.2 MB in the beginning and 58.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:36:12,675 INFO L168 Benchmark]: TraceAbstraction took 84440.49 ms. Allocated memory was 96.5 MB in the beginning and 138.4 MB in the end (delta: 41.9 MB). Free memory was 58.1 MB in the beginning and 59.2 MB in the end (delta: -1.0 MB). Peak memory consumption was 43.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:36:12,676 INFO L168 Benchmark]: Witness Printer took 85.04 ms. Allocated memory is still 138.4 MB. Free memory was 59.2 MB in the beginning and 57.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:36:12,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 71.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 250.98 ms. Allocated memory is still 96.5 MB. Free memory was 54.3 MB in the beginning and 70.9 MB in the end (delta: -16.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.72 ms. Allocated memory is still 96.5 MB. Free memory was 70.9 MB in the beginning and 69.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.55 ms. Allocated memory is still 96.5 MB. Free memory was 69.5 MB in the beginning and 68.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 284.46 ms. Allocated memory is still 96.5 MB. Free memory was 68.2 MB in the beginning and 58.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 84440.49 ms. Allocated memory was 96.5 MB in the beginning and 138.4 MB in the end (delta: 41.9 MB). Free memory was 58.1 MB in the beginning and 59.2 MB in the end (delta: -1.0 MB). Peak memory consumption was 43.5 MB. Max. memory is 16.1 GB. * Witness Printer took 85.04 ms. Allocated memory is still 138.4 MB. Free memory was 59.2 MB in the beginning and 57.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 84381.8ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 0.0ms, AutomataDifference: 57414.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 38.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 15 SDslu, 31 SDs, 0 SdLazy, 161 SolverSat, 34 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 19080.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 49412.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=4, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 46.3ms SsaConstructionTime, 225.6ms SatisfiabilityAnalysisTime, 25324.9ms InterpolantComputationTime, 73 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 492 SizeOfPredicates, 30 NumberOfNonLiveVariables, 352 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 11/24 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:36:12,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fc8196-9cf1-4716-a273-a2d061bd0e3b/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...