./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-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_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/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_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/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_c9735a9a-d43a-46a9-91bf-97c740c929eb/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 c5e2258de6ff8f26c9f54c35b2950a3b6898eace ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 19:25:34,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:25:34,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:25:34,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:25:34,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:25:34,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:25:34,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:25:34,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:25:34,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:25:34,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:25:34,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:25:34,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:25:34,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:25:34,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:25:34,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:25:34,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:25:34,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:25:34,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:25:34,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:25:34,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:25:34,596 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:25:34,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:25:34,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:25:34,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:25:34,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:25:34,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:25:34,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:25:34,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:25:34,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:25:34,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:25:34,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:25:34,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:25:34,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:25:34,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:25:34,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:25:34,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:25:34,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:25:34,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:25:34,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:25:34,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:25:34,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:25:34,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:25:34,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:25:34,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:25:34,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:25:34,658 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:25:34,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:25:34,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:25:34,660 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:25:34,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:25:34,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:25:34,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:25:34,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:25:34,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:25:34,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:25:34,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:25:34,663 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:25:34,663 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:25:34,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:25:34,664 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:25:34,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:25:34,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:25:34,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:25:34,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:25:34,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:25:34,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:25:34,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:25:34,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:25:34,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:25:34,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:25:34,668 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:25:34,669 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:25:34,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:25:34,669 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:25:34,670 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_c9735a9a-d43a-46a9-91bf-97c740c929eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5e2258de6ff8f26c9f54c35b2950a3b6898eace [2021-10-15 19:25:34,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:25:35,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:25:35,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:25:35,010 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:25:35,011 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:25:35,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound100.c [2021-10-15 19:25:35,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/data/b32ff3604/97cddc3baa9a42838db0d5e454b22bfc/FLAG4a0a1e757 [2021-10-15 19:25:35,688 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:25:35,689 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound100.c [2021-10-15 19:25:35,701 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/data/b32ff3604/97cddc3baa9a42838db0d5e454b22bfc/FLAG4a0a1e757 [2021-10-15 19:25:36,025 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/data/b32ff3604/97cddc3baa9a42838db0d5e454b22bfc [2021-10-15 19:25:36,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:25:36,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:25:36,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:25:36,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:25:36,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:25:36,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:25:36" (1/1) ... [2021-10-15 19:25:36,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418a880f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:36, skipping insertion in model container [2021-10-15 19:25:36,053 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:25:36" (1/1) ... [2021-10-15 19:25:36,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:25:36,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:25:36,267 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_c9735a9a-d43a-46a9-91bf-97c740c929eb/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound100.c[525,538] [2021-10-15 19:25:36,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:25:36,291 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:25:36,305 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_c9735a9a-d43a-46a9-91bf-97c740c929eb/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound100.c[525,538] [2021-10-15 19:25:36,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:25:36,326 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:25:36,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:36 WrapperNode [2021-10-15 19:25:36,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:25:36,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:25:36,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:25:36,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:25:36,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:36" (1/1) ... [2021-10-15 19:25:36,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:36" (1/1) ... [2021-10-15 19:25:36,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:25:36,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:25:36,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:25:36,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:25:36,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:36" (1/1) ... [2021-10-15 19:25:36,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:36" (1/1) ... [2021-10-15 19:25:36,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:36" (1/1) ... [2021-10-15 19:25:36,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:36" (1/1) ... [2021-10-15 19:25:36,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:36" (1/1) ... [2021-10-15 19:25:36,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:36" (1/1) ... [2021-10-15 19:25:36,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:36" (1/1) ... [2021-10-15 19:25:36,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:25:36,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:25:36,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:25:36,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:25:36,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:36" (1/1) ... [2021-10-15 19:25:36,403 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:25:36,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:25:36,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:25:36,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:25:36,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:25:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:25:36,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:25:36,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:25:36,810 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:25:36,816 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-15 19:25:36,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:25:36 BoogieIcfgContainer [2021-10-15 19:25:36,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:25:36,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:25:36,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:25:36,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:25:36,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:25:36" (1/3) ... [2021-10-15 19:25:36,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f428539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:25:36, skipping insertion in model container [2021-10-15 19:25:36,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:25:36" (2/3) ... [2021-10-15 19:25:36,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f428539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:25:36, skipping insertion in model container [2021-10-15 19:25:36,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:25:36" (3/3) ... [2021-10-15 19:25:36,843 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound100.c [2021-10-15 19:25:36,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:25:36,849 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-15 19:25:36,944 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:25:36,958 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 19:25:36,958 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-15 19:25:36,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 19 places, 25 transitions, 50 flow [2021-10-15 19:25:37,006 INFO L129 PetriNetUnfolder]: 7/25 cut-off events. [2021-10-15 19:25:37,007 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:25:37,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 25 events. 7/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:25:37,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 19 places, 25 transitions, 50 flow [2021-10-15 19:25:37,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 15 places, 20 transitions, 40 flow [2021-10-15 19:25:37,031 INFO L129 PetriNetUnfolder]: 6/18 cut-off events. [2021-10-15 19:25:37,032 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:25:37,032 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:37,033 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:25:37,034 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:37,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:37,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-10-15 19:25:37,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:37,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261049050] [2021-10-15 19:25:37,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:37,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:37,216 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:25:37,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071673154] [2021-10-15 19:25:37,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:37,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:25:37,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:25:37,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:25:37,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:25:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:37,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-15 19:25:37,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:25:37,819 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 19:25:37,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:37,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261049050] [2021-10-15 19:25:37,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:25:37,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071673154] [2021-10-15 19:25:37,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071673154] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:25:37,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:25:37,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:25:37,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928905931] [2021-10-15 19:25:37,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:25:37,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:25:37,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:25:37,863 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2021-10-15 19:25:37,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 20 transitions, 40 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:37,867 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:37,867 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2021-10-15 19:25:37,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:38,026 INFO L129 PetriNetUnfolder]: 1/21 cut-off events. [2021-10-15 19:25:38,027 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:25:38,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 21 events. 1/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 2/22 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-10-15 19:25:38,028 INFO L132 encePairwiseOnDemand]: 12/25 looper letters, 8 selfloop transitions, 7 changer transitions 1/20 dead transitions. [2021-10-15 19:25:38,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 72 flow [2021-10-15 19:25:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:25:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:25:38,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2021-10-15 19:25:38,059 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.415 [2021-10-15 19:25:38,060 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 83 transitions. [2021-10-15 19:25:38,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 83 transitions. [2021-10-15 19:25:38,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:38,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 83 transitions. [2021-10-15 19:25:38,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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 19:25:38,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 25.0) internal successors, (225), 9 states have internal predecessors, (225), 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 19:25:38,073 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 25.0) internal successors, (225), 9 states have internal predecessors, (225), 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 19:25:38,076 INFO L186 Difference]: Start difference. First operand has 15 places, 20 transitions, 40 flow. Second operand 8 states and 83 transitions. [2021-10-15 19:25:38,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 72 flow [2021-10-15 19:25:38,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 20 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:25:38,081 INFO L242 Difference]: Finished difference. Result has 23 places, 18 transitions, 60 flow [2021-10-15 19:25:38,084 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=60, PETRI_PLACES=23, PETRI_TRANSITIONS=18} [2021-10-15 19:25:38,084 INFO L334 CegarLoopForPetriNet]: 15 programPoint places, 8 predicate places. [2021-10-15 19:25:38,085 INFO L470 AbstractCegarLoop]: Abstraction has has 23 places, 18 transitions, 60 flow [2021-10-15 19:25:38,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,085 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:38,085 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:25:38,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:25:38,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-15 19:25:38,314 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:38,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:38,315 INFO L82 PathProgramCache]: Analyzing trace with hash 636965506, now seen corresponding path program 1 times [2021-10-15 19:25:38,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:38,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50238730] [2021-10-15 19:25:38,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:38,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:38,333 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:25:38,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379225099] [2021-10-15 19:25:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:38,334 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:25:38,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:25:38,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:25:38,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 19:25:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:25:38,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-15 19:25:38,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:25:38,511 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 19:25:38,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:38,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50238730] [2021-10-15 19:25:38,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:25:38,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379225099] [2021-10-15 19:25:38,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379225099] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:25:38,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:25:38,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-15 19:25:38,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228400538] [2021-10-15 19:25:38,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:25:38,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:38,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:25:38,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:25:38,517 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2021-10-15 19:25:38,518 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,518 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:38,518 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2021-10-15 19:25:38,518 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:38,647 INFO L129 PetriNetUnfolder]: 1/26 cut-off events. [2021-10-15 19:25:38,648 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-15 19:25:38,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 26 events. 1/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 2/28 useless extension candidates. Maximal degree in co-relation 3. Up to 9 conditions per place. [2021-10-15 19:25:38,649 INFO L132 encePairwiseOnDemand]: 20/25 looper letters, 10 selfloop transitions, 5 changer transitions 2/24 dead transitions. [2021-10-15 19:25:38,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 110 flow [2021-10-15 19:25:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:25:38,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:25:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2021-10-15 19:25:38,652 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5266666666666666 [2021-10-15 19:25:38,653 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 79 transitions. [2021-10-15 19:25:38,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 79 transitions. [2021-10-15 19:25:38,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:38,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 79 transitions. [2021-10-15 19:25:38,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 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 19:25:38,657 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 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 19:25:38,657 INFO L186 Difference]: Start difference. First operand has 23 places, 18 transitions, 60 flow. Second operand 6 states and 79 transitions. [2021-10-15 19:25:38,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 110 flow [2021-10-15 19:25:38,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 105 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:25:38,661 INFO L242 Difference]: Finished difference. Result has 27 places, 20 transitions, 85 flow [2021-10-15 19:25:38,661 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=85, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2021-10-15 19:25:38,662 INFO L334 CegarLoopForPetriNet]: 15 programPoint places, 12 predicate places. [2021-10-15 19:25:38,662 INFO L470 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 85 flow [2021-10-15 19:25:38,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:38,663 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:38,663 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:25:38,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:25:38,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:25:38,890 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:38,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:38,891 INFO L82 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 2 times [2021-10-15 19:25:38,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:38,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907412520] [2021-10-15 19:25:38,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:38,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:38,911 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:25:38,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603474631] [2021-10-15 19:25:38,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:25:38,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:25:38,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:25:38,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:25:38,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-15 19:25:39,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 19:25:39,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:25:39,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-15 19:25:39,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:25:39,342 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 19:25:39,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:39,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907412520] [2021-10-15 19:25:39,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:25:39,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603474631] [2021-10-15 19:25:39,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603474631] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:25:39,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:25:39,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-15 19:25:39,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904395995] [2021-10-15 19:25:39,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:25:39,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:39,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:25:39,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:25:39,348 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2021-10-15 19:25:39,348 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 85 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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 19:25:39,348 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:39,349 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2021-10-15 19:25:39,349 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:39,529 INFO L129 PetriNetUnfolder]: 1/31 cut-off events. [2021-10-15 19:25:39,529 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-10-15 19:25:39,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 31 events. 1/31 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 2/33 useless extension candidates. Maximal degree in co-relation 36. Up to 9 conditions per place. [2021-10-15 19:25:39,530 INFO L132 encePairwiseOnDemand]: 20/25 looper letters, 11 selfloop transitions, 7 changer transitions 3/28 dead transitions. [2021-10-15 19:25:39,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 151 flow [2021-10-15 19:25:39,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:25:39,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:25:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2021-10-15 19:25:39,533 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.515 [2021-10-15 19:25:39,533 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 103 transitions. [2021-10-15 19:25:39,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 103 transitions. [2021-10-15 19:25:39,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:39,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 103 transitions. [2021-10-15 19:25:39,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:39,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 25.0) internal successors, (225), 9 states have internal predecessors, (225), 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 19:25:39,537 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 25.0) internal successors, (225), 9 states have internal predecessors, (225), 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 19:25:39,537 INFO L186 Difference]: Start difference. First operand has 27 places, 20 transitions, 85 flow. Second operand 8 states and 103 transitions. [2021-10-15 19:25:39,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 151 flow [2021-10-15 19:25:39,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 141 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-15 19:25:39,541 INFO L242 Difference]: Finished difference. Result has 33 places, 22 transitions, 113 flow [2021-10-15 19:25:39,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=113, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2021-10-15 19:25:39,541 INFO L334 CegarLoopForPetriNet]: 15 programPoint places, 18 predicate places. [2021-10-15 19:25:39,542 INFO L470 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 113 flow [2021-10-15 19:25:39,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 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 19:25:39,542 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:25:39,542 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:25:39,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:25:39,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:25:39,762 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:25:39,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:25:39,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1905056066, now seen corresponding path program 3 times [2021-10-15 19:25:39,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:25:39,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622754602] [2021-10-15 19:25:39,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:25:39,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:25:39,776 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:25:39,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735901688] [2021-10-15 19:25:39,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 19:25:39,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:25:39,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:25:39,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:25:39,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-15 19:25:39,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-15 19:25:39,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:25:39,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-15 19:25:39,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:25:40,575 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-15 19:25:40,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:25:40,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622754602] [2021-10-15 19:25:40,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:25:40,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735901688] [2021-10-15 19:25:40,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735901688] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:25:40,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:25:40,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-15 19:25:40,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649077060] [2021-10-15 19:25:40,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:25:40,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:25:40,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:25:40,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:25:40,579 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2021-10-15 19:25:40,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:40,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:40,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2021-10-15 19:25:40,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:50,927 WARN L207 SmtUtils]: Spent 8.29 s on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2021-10-15 19:25:50,970 INFO L129 PetriNetUnfolder]: 1/27 cut-off events. [2021-10-15 19:25:50,970 INFO L130 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2021-10-15 19:25:50,970 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 27 events. 1/27 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 2/29 useless extension candidates. Maximal degree in co-relation 15. Up to 14 conditions per place. [2021-10-15 19:25:50,971 INFO L132 encePairwiseOnDemand]: 20/25 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2021-10-15 19:25:50,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 20 transitions, 127 flow [2021-10-15 19:25:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:25:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:25:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 62 transitions. [2021-10-15 19:25:50,972 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.496 [2021-10-15 19:25:50,973 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 62 transitions. [2021-10-15 19:25:50,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 62 transitions. [2021-10-15 19:25:50,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:25:50,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 62 transitions. [2021-10-15 19:25:50,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 19:25:50,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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 19:25:50,975 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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 19:25:50,975 INFO L186 Difference]: Start difference. First operand has 33 places, 22 transitions, 113 flow. Second operand 5 states and 62 transitions. [2021-10-15 19:25:50,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 20 transitions, 127 flow [2021-10-15 19:25:50,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 20 transitions, 109 flow, removed 4 selfloop flow, removed 5 redundant places. [2021-10-15 19:25:50,978 INFO L242 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2021-10-15 19:25:50,978 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2021-10-15 19:25:50,978 INFO L334 CegarLoopForPetriNet]: 15 programPoint places, 13 predicate places. [2021-10-15 19:25:50,978 INFO L470 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2021-10-15 19:25:50,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:25:50,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:25:50,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:25:51,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:25:51,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:25:51,188 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:25:51,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:25:51 BoogieIcfgContainer [2021-10-15 19:25:51,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:25:51,196 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:25:51,196 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:25:51,196 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:25:51,197 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:25:36" (3/4) ... [2021-10-15 19:25:51,201 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:25:51,226 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-15 19:25:51,226 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:25:51,227 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:25:51,227 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:25:51,275 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:25:51,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:25:51,283 INFO L168 Benchmark]: Toolchain (without parser) took 15253.28 ms. Allocated memory was 77.6 MB in the beginning and 119.5 MB in the end (delta: 41.9 MB). Free memory was 41.3 MB in the beginning and 47.6 MB in the end (delta: -6.3 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:51,285 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:25:51,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.28 ms. Allocated memory was 77.6 MB in the beginning and 119.5 MB in the end (delta: 41.9 MB). Free memory was 41.1 MB in the beginning and 95.8 MB in the end (delta: -54.7 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:51,287 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.36 ms. Allocated memory is still 119.5 MB. Free memory was 95.8 MB in the beginning and 94.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:51,290 INFO L168 Benchmark]: Boogie Preprocessor took 25.71 ms. Allocated memory is still 119.5 MB. Free memory was 94.1 MB in the beginning and 93.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:51,291 INFO L168 Benchmark]: RCFGBuilder took 425.74 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 83.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:51,291 INFO L168 Benchmark]: TraceAbstraction took 14374.27 ms. Allocated memory is still 119.5 MB. Free memory was 83.2 MB in the beginning and 50.5 MB in the end (delta: 32.7 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:51,292 INFO L168 Benchmark]: Witness Printer took 86.55 ms. Allocated memory is still 119.5 MB. Free memory was 50.5 MB in the beginning and 47.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:25:51,295 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 77.6 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 296.28 ms. Allocated memory was 77.6 MB in the beginning and 119.5 MB in the end (delta: 41.9 MB). Free memory was 41.1 MB in the beginning and 95.8 MB in the end (delta: -54.7 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.36 ms. Allocated memory is still 119.5 MB. Free memory was 95.8 MB in the beginning and 94.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.71 ms. Allocated memory is still 119.5 MB. Free memory was 94.1 MB in the beginning and 93.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 425.74 ms. Allocated memory is still 119.5 MB. Free memory was 93.0 MB in the beginning and 83.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14374.27 ms. Allocated memory is still 119.5 MB. Free memory was 83.2 MB in the beginning and 50.5 MB in the end (delta: 32.7 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. * Witness Printer took 86.55 ms. Allocated memory is still 119.5 MB. Free memory was 50.5 MB in the beginning and 47.6 MB in the end (delta: 2.9 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 14.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14247.2ms, OverallIterations: 4, TraceHistogramMax: 4, EmptinessCheckTime: 0.0ms, AutomataDifference: 10975.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 59.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 24 SDslu, 30 SDs, 0 SdLazy, 124 SolverSat, 41 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2322.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 8734.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=3, InterpolantAutomatonStates: 27, 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: 43.2ms SsaConstructionTime, 199.8ms SatisfiabilityAnalysisTime, 1551.0ms InterpolantComputationTime, 54 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 279 SizeOfPredicates, 23 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 14/24 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 19:25:51,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9735a9a-d43a-46a9-91bf-97c740c929eb/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...