./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product09.cil.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_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/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_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/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_58224176-27bd-4606-8cf3-30320458bc8d/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 382d2ea6a553ea1eace119fc8ce6f047e20e7ebe .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 19:35:25,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:35:25,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:35:25,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:35:25,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:35:25,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:35:25,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:35:25,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:35:25,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:35:25,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:35:25,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:35:25,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:35:25,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:35:25,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:35:25,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:35:25,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:35:25,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:35:25,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:35:25,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:35:25,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:35:25,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:35:25,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:35:25,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:35:25,184 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:35:25,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:35:25,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:35:25,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:35:25,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:35:25,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:35:25,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:35:25,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:35:25,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:35:25,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:35:25,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:35:25,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:35:25,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:35:25,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:35:25,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:35:25,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:35:25,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:35:25,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:35:25,215 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:35:25,277 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:35:25,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:35:25,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:35:25,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:35:25,282 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:35:25,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:35:25,282 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:35:25,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:35:25,283 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:35:25,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:35:25,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:35:25,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:35:25,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:35:25,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:35:25,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:35:25,288 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:35:25,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:35:25,288 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:35:25,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:35:25,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:35:25,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:35:25,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:35:25,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:35:25,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:35:25,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:35:25,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:35:25,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:35:25,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:35:25,292 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:35:25,295 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:35:25,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:35:25,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:35:25,296 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_58224176-27bd-4606-8cf3-30320458bc8d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 382d2ea6a553ea1eace119fc8ce6f047e20e7ebe [2021-10-15 19:35:25,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:35:25,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:35:25,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:35:25,726 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:35:25,727 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:35:25,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/product-lines/minepump_spec4_product09.cil.c [2021-10-15 19:35:25,816 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/data/78ad185d4/7a1c077b0d88406cb2c129ffa2ddba99/FLAG0c778169e [2021-10-15 19:35:26,436 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:35:26,436 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/sv-benchmarks/c/product-lines/minepump_spec4_product09.cil.c [2021-10-15 19:35:26,450 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/data/78ad185d4/7a1c077b0d88406cb2c129ffa2ddba99/FLAG0c778169e [2021-10-15 19:35:26,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/data/78ad185d4/7a1c077b0d88406cb2c129ffa2ddba99 [2021-10-15 19:35:26,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:35:26,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:35:26,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:35:26,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:35:26,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:35:26,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:35:26" (1/1) ... [2021-10-15 19:35:26,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527e4bf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:26, skipping insertion in model container [2021-10-15 19:35:26,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:35:26" (1/1) ... [2021-10-15 19:35:26,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:35:26,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:35:27,142 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_58224176-27bd-4606-8cf3-30320458bc8d/sv-benchmarks/c/product-lines/minepump_spec4_product09.cil.c[11292,11305] [2021-10-15 19:35:27,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:35:27,227 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:35:27,282 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_58224176-27bd-4606-8cf3-30320458bc8d/sv-benchmarks/c/product-lines/minepump_spec4_product09.cil.c[11292,11305] [2021-10-15 19:35:27,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:35:27,340 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:35:27,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:27 WrapperNode [2021-10-15 19:35:27,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:35:27,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:35:27,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:35:27,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:35:27,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:27" (1/1) ... [2021-10-15 19:35:27,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:27" (1/1) ... [2021-10-15 19:35:27,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:35:27,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:35:27,444 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:35:27,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:35:27,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:27" (1/1) ... [2021-10-15 19:35:27,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:27" (1/1) ... [2021-10-15 19:35:27,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:27" (1/1) ... [2021-10-15 19:35:27,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:27" (1/1) ... [2021-10-15 19:35:27,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:27" (1/1) ... [2021-10-15 19:35:27,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:27" (1/1) ... [2021-10-15 19:35:27,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:27" (1/1) ... [2021-10-15 19:35:27,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:35:27,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:35:27,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:35:27,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:35:27,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:27" (1/1) ... [2021-10-15 19:35:27,520 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:35:27,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:35:27,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:35:27,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:35:27,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:35:27,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:35:27,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:35:27,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:35:28,622 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:35:28,622 INFO L299 CfgBuilder]: Removed 66 assume(true) statements. [2021-10-15 19:35:28,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:35:28 BoogieIcfgContainer [2021-10-15 19:35:28,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:35:28,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:35:28,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:35:28,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:35:28,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:35:26" (1/3) ... [2021-10-15 19:35:28,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dce3383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:35:28, skipping insertion in model container [2021-10-15 19:35:28,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:35:27" (2/3) ... [2021-10-15 19:35:28,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dce3383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:35:28, skipping insertion in model container [2021-10-15 19:35:28,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:35:28" (3/3) ... [2021-10-15 19:35:28,638 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product09.cil.c [2021-10-15 19:35:28,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:35:28,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-15 19:35:28,730 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:35:28,742 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 19:35:28,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-15 19:35:28,766 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 57 places, 84 transitions, 168 flow [2021-10-15 19:35:28,827 INFO L129 PetriNetUnfolder]: 28/84 cut-off events. [2021-10-15 19:35:28,828 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:35:28,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 84 events. 28/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-10-15 19:35:28,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 84 transitions, 168 flow [2021-10-15 19:35:28,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 77 transitions, 154 flow [2021-10-15 19:35:28,864 INFO L129 PetriNetUnfolder]: 16/49 cut-off events. [2021-10-15 19:35:28,865 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:35:28,865 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:35:28,866 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:35:28,867 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:35:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:35:28,877 INFO L82 PathProgramCache]: Analyzing trace with hash 881855315, now seen corresponding path program 1 times [2021-10-15 19:35:28,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:35:28,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38838144] [2021-10-15 19:35:28,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:35:28,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:35:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:35:29,362 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 19:35:29,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:35:29,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38838144] [2021-10-15 19:35:29,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38838144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:35:29,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:35:29,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:35:29,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440804077] [2021-10-15 19:35:29,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:35:29,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:35:29,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:35:29,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:35:29,404 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 84 [2021-10-15 19:35:29,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 77 transitions, 154 flow. Second operand has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 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 19:35:29,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:35:29,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 84 [2021-10-15 19:35:29,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:35:29,434 INFO L129 PetriNetUnfolder]: 20/72 cut-off events. [2021-10-15 19:35:29,434 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:35:29,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 72 events. 20/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 4/54 useless extension candidates. Maximal degree in co-relation 72. Up to 3 conditions per place. [2021-10-15 19:35:29,436 INFO L132 encePairwiseOnDemand]: 79/84 looper letters, 0 selfloop transitions, 0 changer transitions 0/72 dead transitions. [2021-10-15 19:35:29,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 72 transitions, 144 flow [2021-10-15 19:35:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:35:29,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:35:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 159 transitions. [2021-10-15 19:35:29,451 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9464285714285714 [2021-10-15 19:35:29,452 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 159 transitions. [2021-10-15 19:35:29,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 159 transitions. [2021-10-15 19:35:29,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:35:29,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 159 transitions. [2021-10-15 19:35:29,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 79.5) internal successors, (159), 2 states have internal predecessors, (159), 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 19:35:29,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 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 19:35:29,480 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 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 19:35:29,483 INFO L186 Difference]: Start difference. First operand has 53 places, 77 transitions, 154 flow. Second operand 2 states and 159 transitions. [2021-10-15 19:35:29,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 72 transitions, 144 flow [2021-10-15 19:35:29,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 144 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:35:29,495 INFO L242 Difference]: Finished difference. Result has 54 places, 72 transitions, 144 flow [2021-10-15 19:35:29,497 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=144, PETRI_PLACES=54, PETRI_TRANSITIONS=72} [2021-10-15 19:35:29,498 INFO L334 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2021-10-15 19:35:29,499 INFO L470 AbstractCegarLoop]: Abstraction has has 54 places, 72 transitions, 144 flow [2021-10-15 19:35:29,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 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 19:35:29,500 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:35:29,500 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:35:29,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:35:29,501 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:35:29,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:35:29,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1127498704, now seen corresponding path program 1 times [2021-10-15 19:35:29,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:35:29,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461528270] [2021-10-15 19:35:29,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:35:29,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:35:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:35:29,648 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 19:35:29,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:35:29,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461528270] [2021-10-15 19:35:29,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461528270] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:35:29,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:35:29,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:35:29,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638594330] [2021-10-15 19:35:29,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:35:29,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:35:29,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:35:29,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:35:29,658 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 84 [2021-10-15 19:35:29,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 72 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 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 19:35:29,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:35:29,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 84 [2021-10-15 19:35:29,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:35:29,681 INFO L129 PetriNetUnfolder]: 11/37 cut-off events. [2021-10-15 19:35:29,682 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:35:29,682 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 37 events. 11/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2021-10-15 19:35:29,687 INFO L132 encePairwiseOnDemand]: 82/84 looper letters, 1 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2021-10-15 19:35:29,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 78 flow [2021-10-15 19:35:29,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:35:29,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:35:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2021-10-15 19:35:29,701 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2021-10-15 19:35:29,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2021-10-15 19:35:29,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2021-10-15 19:35:29,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:35:29,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2021-10-15 19:35:29,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 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 19:35:29,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 19:35:29,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 19:35:29,711 INFO L186 Difference]: Start difference. First operand has 54 places, 72 transitions, 144 flow. Second operand 3 states and 225 transitions. [2021-10-15 19:35:29,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 78 flow [2021-10-15 19:35:29,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 78 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:35:29,714 INFO L242 Difference]: Finished difference. Result has 30 places, 37 transitions, 76 flow [2021-10-15 19:35:29,715 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=30, PETRI_TRANSITIONS=37} [2021-10-15 19:35:29,715 INFO L334 CegarLoopForPetriNet]: 53 programPoint places, -23 predicate places. [2021-10-15 19:35:29,715 INFO L470 AbstractCegarLoop]: Abstraction has has 30 places, 37 transitions, 76 flow [2021-10-15 19:35:29,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 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 19:35:29,716 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:35:29,716 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:35:29,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:35:29,717 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:35:29,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:35:29,717 INFO L82 PathProgramCache]: Analyzing trace with hash -357317040, now seen corresponding path program 1 times [2021-10-15 19:35:29,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:35:29,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992748805] [2021-10-15 19:35:29,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:35:29,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:35:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:35:29,961 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 19:35:29,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:35:29,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992748805] [2021-10-15 19:35:29,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992748805] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:35:29,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:35:29,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:35:29,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325683881] [2021-10-15 19:35:29,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:35:29,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:35:29,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:35:29,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:35:29,972 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 84 [2021-10-15 19:35:29,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 37 transitions, 76 flow. Second operand has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 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 19:35:29,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:35:29,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 84 [2021-10-15 19:35:29,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:35:30,403 INFO L129 PetriNetUnfolder]: 64/184 cut-off events. [2021-10-15 19:35:30,404 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:35:30,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 184 events. 64/184 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 511 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 227. Up to 24 conditions per place. [2021-10-15 19:35:30,409 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 19 selfloop transitions, 23 changer transitions 0/66 dead transitions. [2021-10-15 19:35:30,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 66 transitions, 218 flow [2021-10-15 19:35:30,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-15 19:35:30,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-15 19:35:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 711 transitions. [2021-10-15 19:35:30,416 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6510989010989011 [2021-10-15 19:35:30,417 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 711 transitions. [2021-10-15 19:35:30,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 711 transitions. [2021-10-15 19:35:30,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:35:30,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 711 transitions. [2021-10-15 19:35:30,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 54.69230769230769) internal successors, (711), 13 states have internal predecessors, (711), 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 19:35:30,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 19:35:30,430 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 19:35:30,430 INFO L186 Difference]: Start difference. First operand has 30 places, 37 transitions, 76 flow. Second operand 13 states and 711 transitions. [2021-10-15 19:35:30,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 66 transitions, 218 flow [2021-10-15 19:35:30,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:35:30,437 INFO L242 Difference]: Finished difference. Result has 45 places, 60 transitions, 213 flow [2021-10-15 19:35:30,437 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=213, PETRI_PLACES=45, PETRI_TRANSITIONS=60} [2021-10-15 19:35:30,437 INFO L334 CegarLoopForPetriNet]: 53 programPoint places, -8 predicate places. [2021-10-15 19:35:30,437 INFO L470 AbstractCegarLoop]: Abstraction has has 45 places, 60 transitions, 213 flow [2021-10-15 19:35:30,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 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 19:35:30,438 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:35:30,439 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:35:30,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:35:30,439 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:35:30,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:35:30,441 INFO L82 PathProgramCache]: Analyzing trace with hash 444418065, now seen corresponding path program 1 times [2021-10-15 19:35:30,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:35:30,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721520872] [2021-10-15 19:35:30,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:35:30,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:35:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:35:30,558 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 19:35:30,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:35:30,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721520872] [2021-10-15 19:35:30,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721520872] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:35:30,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:35:30,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:35:30,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747768984] [2021-10-15 19:35:30,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:35:30,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:35:30,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:35:30,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:35:30,562 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 84 [2021-10-15 19:35:30,563 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 60 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 19:35:30,563 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:35:30,563 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 84 [2021-10-15 19:35:30,563 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:35:30,608 INFO L129 PetriNetUnfolder]: 50/162 cut-off events. [2021-10-15 19:35:30,608 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-10-15 19:35:30,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 162 events. 50/162 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 272 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 209. Up to 24 conditions per place. [2021-10-15 19:35:30,610 INFO L132 encePairwiseOnDemand]: 82/84 looper letters, 2 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2021-10-15 19:35:30,610 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 174 flow [2021-10-15 19:35:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:35:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:35:30,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2021-10-15 19:35:30,616 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8134920634920635 [2021-10-15 19:35:30,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2021-10-15 19:35:30,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2021-10-15 19:35:30,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:35:30,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2021-10-15 19:35:30,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 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 19:35:30,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 19:35:30,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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 19:35:30,620 INFO L186 Difference]: Start difference. First operand has 45 places, 60 transitions, 213 flow. Second operand 3 states and 205 transitions. [2021-10-15 19:35:30,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 174 flow [2021-10-15 19:35:30,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 167 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:35:30,627 INFO L242 Difference]: Finished difference. Result has 43 places, 50 transitions, 163 flow [2021-10-15 19:35:30,628 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2021-10-15 19:35:30,628 INFO L334 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2021-10-15 19:35:30,628 INFO L470 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 163 flow [2021-10-15 19:35:30,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 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 19:35:30,629 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:35:30,629 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:35:30,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:35:30,630 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:35:30,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:35:30,631 INFO L82 PathProgramCache]: Analyzing trace with hash 587810131, now seen corresponding path program 1 times [2021-10-15 19:35:30,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:35:30,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485199986] [2021-10-15 19:35:30,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:35:30,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:35:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:35:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:30,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:35:30,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485199986] [2021-10-15 19:35:30,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485199986] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:35:30,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110747285] [2021-10-15 19:35:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:35:30,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:35:30,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:35:30,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:35:30,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:35:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:35:30,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 19:35:30,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:35:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:35:31,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110747285] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:35:31,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:35:31,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-10-15 19:35:31,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918045902] [2021-10-15 19:35:31,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:35:31,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:35:31,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:35:31,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:35:31,149 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-10-15 19:35:31,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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 19:35:31,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:35:31,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-10-15 19:35:31,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:35:31,263 INFO L129 PetriNetUnfolder]: 24/84 cut-off events. [2021-10-15 19:35:31,264 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-10-15 19:35:31,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 84 events. 24/84 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 110. Up to 12 conditions per place. [2021-10-15 19:35:31,265 INFO L132 encePairwiseOnDemand]: 82/84 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2021-10-15 19:35:31,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 116 flow [2021-10-15 19:35:31,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:35:31,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:35:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2021-10-15 19:35:31,267 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7916666666666666 [2021-10-15 19:35:31,267 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 266 transitions. [2021-10-15 19:35:31,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 266 transitions. [2021-10-15 19:35:31,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:35:31,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 266 transitions. [2021-10-15 19:35:31,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.5) internal successors, (266), 4 states have internal predecessors, (266), 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 19:35:31,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 19:35:31,272 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 19:35:31,272 INFO L186 Difference]: Start difference. First operand has 43 places, 50 transitions, 163 flow. Second operand 4 states and 266 transitions. [2021-10-15 19:35:31,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 116 flow [2021-10-15 19:35:31,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 34 transitions, 99 flow, removed 1 selfloop flow, removed 6 redundant places. [2021-10-15 19:35:31,274 INFO L242 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2021-10-15 19:35:31,275 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2021-10-15 19:35:31,275 INFO L334 CegarLoopForPetriNet]: 53 programPoint places, -20 predicate places. [2021-10-15 19:35:31,275 INFO L470 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2021-10-15 19:35:31,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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 19:35:31,278 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:35:31,279 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:35:31,279 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:35:31,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-15 19:35:31,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:35:31,497 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:35:31,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:35:31 BoogieIcfgContainer [2021-10-15 19:35:31,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:35:31,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:35:31,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:35:31,504 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:35:31,504 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:35:28" (3/4) ... [2021-10-15 19:35:31,508 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:35:31,537 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2021-10-15 19:35:31,538 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-15 19:35:31,539 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-15 19:35:31,539 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-15 19:35:31,540 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 19:35:31,540 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:35:31,541 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:35:31,616 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:35:31,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:35:31,618 INFO L168 Benchmark]: Toolchain (without parser) took 4873.51 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 52.2 MB in the beginning and 57.6 MB in the end (delta: -5.5 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:31,619 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:35:31,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 595.94 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 51.9 MB in the beginning and 77.0 MB in the end (delta: -25.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:31,620 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.92 ms. Allocated memory is still 109.1 MB. Free memory was 77.0 MB in the beginning and 74.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:31,620 INFO L168 Benchmark]: Boogie Preprocessor took 74.56 ms. Allocated memory is still 109.1 MB. Free memory was 74.1 MB in the beginning and 72.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:31,621 INFO L168 Benchmark]: RCFGBuilder took 1115.72 ms. Allocated memory is still 109.1 MB. Free memory was 72.4 MB in the beginning and 74.1 MB in the end (delta: -1.7 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:31,621 INFO L168 Benchmark]: TraceAbstraction took 2875.19 ms. Allocated memory is still 109.1 MB. Free memory was 74.1 MB in the beginning and 62.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:31,622 INFO L168 Benchmark]: Witness Printer took 113.31 ms. Allocated memory is still 109.1 MB. Free memory was 62.1 MB in the beginning and 57.6 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:35:31,625 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 595.94 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 51.9 MB in the beginning and 77.0 MB in the end (delta: -25.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.92 ms. Allocated memory is still 109.1 MB. Free memory was 77.0 MB in the beginning and 74.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.56 ms. Allocated memory is still 109.1 MB. Free memory was 74.1 MB in the beginning and 72.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1115.72 ms. Allocated memory is still 109.1 MB. Free memory was 72.4 MB in the beginning and 74.1 MB in the end (delta: -1.7 MB). Peak memory consumption was 32.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2875.19 ms. Allocated memory is still 109.1 MB. Free memory was 74.1 MB in the beginning and 62.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * Witness Printer took 113.31 ms. Allocated memory is still 109.1 MB. Free memory was 62.1 MB in the beginning and 57.6 MB in the end (delta: 4.4 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: 420]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 420]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 420]: 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, 57 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 19.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2773.2ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 828.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 102.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 43 SDslu, 21 SDs, 0 SdLazy, 86 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 323.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 166.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=213occurred in iteration=3, InterpolantAutomatonStates: 25, 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: 99.5ms SsaConstructionTime, 425.6ms SatisfiabilityAnalysisTime, 776.6ms InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 370 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 23/28 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:35:31,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58224176-27bd-4606-8cf3-30320458bc8d/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...