./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound1.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_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/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_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/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_ac405089-9966-48c6-a2f9-579067b6c2d1/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 209c539de9d1137f5ec250dab311a19588f71926 ............................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:46:05,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:46:05,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:46:05,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:46:05,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:46:05,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:46:05,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:46:05,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:46:05,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:46:05,145 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:46:05,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:46:05,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:46:05,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:46:05,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:46:05,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:46:05,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:46:05,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:46:05,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:46:05,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:46:05,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:46:05,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:46:05,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:46:05,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:46:05,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:46:05,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:46:05,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:46:05,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:46:05,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:46:05,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:46:05,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:46:05,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:46:05,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:46:05,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:46:05,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:46:05,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:46:05,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:46:05,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:46:05,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:46:05,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:46:05,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:46:05,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:46:05,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:46:05,227 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:46:05,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:46:05,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:46:05,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:46:05,229 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:46:05,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:46:05,230 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:46:05,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:46:05,231 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:46:05,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:46:05,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:46:05,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:46:05,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:46:05,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:46:05,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:46:05,233 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:46:05,233 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:46:05,233 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:46:05,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:46:05,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:46:05,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:46:05,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:46:05,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:46:05,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:46:05,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:46:05,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:46:05,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:46:05,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:46:05,237 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:46:05,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:46:05,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:46:05,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:46:05,238 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_ac405089-9966-48c6-a2f9-579067b6c2d1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 209c539de9d1137f5ec250dab311a19588f71926 [2021-10-15 19:46:05,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:46:05,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:46:05,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:46:05,588 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:46:05,594 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:46:05,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound1.c [2021-10-15 19:46:05,682 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/data/3c1059604/c5678a3ce30243fcbd0f15399f4d8bab/FLAG53ad27118 [2021-10-15 19:46:06,236 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:46:06,236 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound1.c [2021-10-15 19:46:06,244 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/data/3c1059604/c5678a3ce30243fcbd0f15399f4d8bab/FLAG53ad27118 [2021-10-15 19:46:06,580 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/data/3c1059604/c5678a3ce30243fcbd0f15399f4d8bab [2021-10-15 19:46:06,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:46:06,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:46:06,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:46:06,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:46:06,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:46:06,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:46:06" (1/1) ... [2021-10-15 19:46:06,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f002f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:06, skipping insertion in model container [2021-10-15 19:46:06,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:46:06" (1/1) ... [2021-10-15 19:46:06,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:46:06,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:46:06,845 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_ac405089-9966-48c6-a2f9-579067b6c2d1/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound1.c[454,467] [2021-10-15 19:46:06,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:46:06,870 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:46:06,891 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_ac405089-9966-48c6-a2f9-579067b6c2d1/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound1.c[454,467] [2021-10-15 19:46:06,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:46:06,914 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:46:06,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:06 WrapperNode [2021-10-15 19:46:06,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:46:06,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:46:06,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:46:06,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:46:06,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:06" (1/1) ... [2021-10-15 19:46:06,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:06" (1/1) ... [2021-10-15 19:46:06,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:46:06,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:46:06,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:46:06,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:46:06,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:06" (1/1) ... [2021-10-15 19:46:06,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:06" (1/1) ... [2021-10-15 19:46:06,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:06" (1/1) ... [2021-10-15 19:46:06,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:06" (1/1) ... [2021-10-15 19:46:06,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:06" (1/1) ... [2021-10-15 19:46:07,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:06" (1/1) ... [2021-10-15 19:46:07,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:06" (1/1) ... [2021-10-15 19:46:07,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:46:07,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:46:07,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:46:07,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:46:07,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:06" (1/1) ... [2021-10-15 19:46:07,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:46:07,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:07,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:46:07,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:46:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:46:07,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:46:07,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:46:07,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:46:07,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:46:07,441 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-15 19:46:07,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:46:07 BoogieIcfgContainer [2021-10-15 19:46:07,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:46:07,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:46:07,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:46:07,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:46:07,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:46:06" (1/3) ... [2021-10-15 19:46:07,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef69928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:46:07, skipping insertion in model container [2021-10-15 19:46:07,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:46:06" (2/3) ... [2021-10-15 19:46:07,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ef69928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:46:07, skipping insertion in model container [2021-10-15 19:46:07,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:46:07" (3/3) ... [2021-10-15 19:46:07,478 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_valuebound1.c [2021-10-15 19:46:07,485 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:46:07,485 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-15 19:46:07,561 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:46:07,593 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 19:46:07,593 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-15 19:46:07,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 22 transitions, 44 flow [2021-10-15 19:46:07,631 INFO L129 PetriNetUnfolder]: 6/22 cut-off events. [2021-10-15 19:46:07,632 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:46:07,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 22 events. 6/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 0 based on Foata normal form. 0/14 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:46:07,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 17 places, 22 transitions, 44 flow [2021-10-15 19:46:07,640 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 13 places, 17 transitions, 34 flow [2021-10-15 19:46:07,644 INFO L129 PetriNetUnfolder]: 5/14 cut-off events. [2021-10-15 19:46:07,645 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:46:07,645 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:07,646 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:07,647 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:46:07,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:07,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-15 19:46:07,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:07,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306470922] [2021-10-15 19:46:07,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:07,668 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:07,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:46:07,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440193777] [2021-10-15 19:46:07,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:07,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:07,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:07,792 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:46:07,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:46:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:46:07,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:46:07,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:46:08,028 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 19:46:08,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:46:08,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306470922] [2021-10-15 19:46:08,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:46:08,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440193777] [2021-10-15 19:46:08,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440193777] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:46:08,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:46:08,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:46:08,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190968160] [2021-10-15 19:46:08,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:46:08,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:46:08,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:46:08,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:46:08,063 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2021-10-15 19:46:08,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 17 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 19:46:08,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:08,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2021-10-15 19:46:08,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:08,137 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2021-10-15 19:46:08,138 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:46:08,138 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 19 events. 1/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 3/21 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2021-10-15 19:46:08,140 INFO L132 encePairwiseOnDemand]: 13/22 looper letters, 8 selfloop transitions, 4 changer transitions 1/18 dead transitions. [2021-10-15 19:46:08,140 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 18 transitions, 62 flow [2021-10-15 19:46:08,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:46:08,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:46:08,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2021-10-15 19:46:08,155 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5727272727272728 [2021-10-15 19:46:08,156 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 63 transitions. [2021-10-15 19:46:08,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 63 transitions. [2021-10-15 19:46:08,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:08,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 63 transitions. [2021-10-15 19:46:08,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 19:46:08,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 19:46:08,188 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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 19:46:08,191 INFO L186 Difference]: Start difference. First operand has 13 places, 17 transitions, 34 flow. Second operand 5 states and 63 transitions. [2021-10-15 19:46:08,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 18 transitions, 62 flow [2021-10-15 19:46:08,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 18 transitions, 62 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:46:08,197 INFO L242 Difference]: Finished difference. Result has 18 places, 16 transitions, 50 flow [2021-10-15 19:46:08,199 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=50, PETRI_PLACES=18, PETRI_TRANSITIONS=16} [2021-10-15 19:46:08,200 INFO L334 CegarLoopForPetriNet]: 13 programPoint places, 5 predicate places. [2021-10-15 19:46:08,201 INFO L470 AbstractCegarLoop]: Abstraction has has 18 places, 16 transitions, 50 flow [2021-10-15 19:46:08,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 19:46:08,201 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:08,201 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:08,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:46:08,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-15 19:46:08,404 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:46:08,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:08,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1864186656, now seen corresponding path program 1 times [2021-10-15 19:46:08,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:08,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116659718] [2021-10-15 19:46:08,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:08,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:08,448 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:46:08,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576008520] [2021-10-15 19:46:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:08,450 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:08,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:08,457 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:46:08,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 19:46:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:46:08,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-15 19:46:08,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:46:08,774 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 19:46:08,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:46:08,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116659718] [2021-10-15 19:46:08,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:46:08,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576008520] [2021-10-15 19:46:08,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576008520] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:46:08,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:46:08,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-15 19:46:08,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942194275] [2021-10-15 19:46:08,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:46:08,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:46:08,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:46:08,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:46:08,782 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2021-10-15 19:46:08,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 19:46:08,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:08,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2021-10-15 19:46:08,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:08,889 INFO L129 PetriNetUnfolder]: 1/24 cut-off events. [2021-10-15 19:46:08,889 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:46:08,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 24 events. 1/24 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 2/26 useless extension candidates. Maximal degree in co-relation 3. Up to 9 conditions per place. [2021-10-15 19:46:08,893 INFO L132 encePairwiseOnDemand]: 17/22 looper letters, 10 selfloop transitions, 5 changer transitions 2/22 dead transitions. [2021-10-15 19:46:08,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 22 transitions, 100 flow [2021-10-15 19:46:08,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:46:08,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:46:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2021-10-15 19:46:08,898 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2021-10-15 19:46:08,898 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 67 transitions. [2021-10-15 19:46:08,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 67 transitions. [2021-10-15 19:46:08,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:08,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 67 transitions. [2021-10-15 19:46:08,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 19:46:08,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 19:46:08,908 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 19:46:08,909 INFO L186 Difference]: Start difference. First operand has 18 places, 16 transitions, 50 flow. Second operand 6 states and 67 transitions. [2021-10-15 19:46:08,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 22 transitions, 100 flow [2021-10-15 19:46:08,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 22 transitions, 100 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:46:08,915 INFO L242 Difference]: Finished difference. Result has 25 places, 18 transitions, 80 flow [2021-10-15 19:46:08,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=80, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2021-10-15 19:46:08,917 INFO L334 CegarLoopForPetriNet]: 13 programPoint places, 12 predicate places. [2021-10-15 19:46:08,917 INFO L470 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 80 flow [2021-10-15 19:46:08,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 19:46:08,918 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:46:08,918 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-15 19:46:08,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:46:09,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:09,140 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:46:09,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:46:09,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2052598129, now seen corresponding path program 2 times [2021-10-15 19:46:09,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:46:09,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749502157] [2021-10-15 19:46:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:46:09,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:46:09,161 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:46:09,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929163248] [2021-10-15 19:46:09,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:46:09,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:46:09,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:46:09,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:46:09,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-15 19:46:09,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 19:46:09,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:46:09,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 19:46:09,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:46:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:46:09,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:46:09,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749502157] [2021-10-15 19:46:09,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:46:09,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929163248] [2021-10-15 19:46:09,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929163248] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:46:09,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:46:09,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:46:09,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556026437] [2021-10-15 19:46:09,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:46:09,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:46:09,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:46:09,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:46:09,540 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 22 [2021-10-15 19:46:09,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 80 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 19:46:09,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:46:09,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 22 [2021-10-15 19:46:09,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:46:09,664 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-10-15 19:46:09,664 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-10-15 19:46:09,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 13 events. 0/13 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/14 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:46:09,666 INFO L132 encePairwiseOnDemand]: 18/22 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2021-10-15 19:46:09,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 11 transitions, 51 flow [2021-10-15 19:46:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:46:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:46:09,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2021-10-15 19:46:09,671 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5984848484848485 [2021-10-15 19:46:09,671 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 79 transitions. [2021-10-15 19:46:09,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 79 transitions. [2021-10-15 19:46:09,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:46:09,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 79 transitions. [2021-10-15 19:46:09,674 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 19:46:09,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 19:46:09,676 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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 19:46:09,676 INFO L186 Difference]: Start difference. First operand has 25 places, 18 transitions, 80 flow. Second operand 6 states and 79 transitions. [2021-10-15 19:46:09,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 11 transitions, 51 flow [2021-10-15 19:46:09,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 11 transitions, 37 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-10-15 19:46:09,680 INFO L242 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2021-10-15 19:46:09,680 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2021-10-15 19:46:09,681 INFO L334 CegarLoopForPetriNet]: 13 programPoint places, 5 predicate places. [2021-10-15 19:46:09,681 INFO L470 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2021-10-15 19:46:09,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 19:46:09,684 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:46:09,685 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:46:09,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:46:09,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-15 19:46:09,917 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:46:09,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:46:09 BoogieIcfgContainer [2021-10-15 19:46:09,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:46:09,924 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:46:09,924 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:46:09,924 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:46:09,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:46:07" (3/4) ... [2021-10-15 19:46:09,936 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:46:09,948 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-15 19:46:09,949 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:46:09,949 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:46:09,949 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:46:10,018 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:46:10,018 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:46:10,020 INFO L168 Benchmark]: Toolchain (without parser) took 3432.69 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.5 MB in the beginning and 94.3 MB in the end (delta: -34.9 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:10,021 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory was 75.8 MB in the beginning and 75.8 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:46:10,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.48 ms. Allocated memory is still 96.5 MB. Free memory was 59.3 MB in the beginning and 72.2 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:10,022 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.55 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 70.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:10,023 INFO L168 Benchmark]: Boogie Preprocessor took 57.00 ms. Allocated memory is still 96.5 MB. Free memory was 70.6 MB in the beginning and 69.7 MB in the end (delta: 983.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:46:10,052 INFO L168 Benchmark]: RCFGBuilder took 431.37 ms. Allocated memory is still 96.5 MB. Free memory was 69.7 MB in the beginning and 60.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:10,053 INFO L168 Benchmark]: TraceAbstraction took 2470.49 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.9 MB in the beginning and 54.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:10,054 INFO L168 Benchmark]: Witness Printer took 94.41 ms. Allocated memory is still 117.4 MB. Free memory was 54.9 MB in the beginning and 94.3 MB in the end (delta: -39.4 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:46:10,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory was 75.8 MB in the beginning and 75.8 MB in the end (delta: 51.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 323.48 ms. Allocated memory is still 96.5 MB. Free memory was 59.3 MB in the beginning and 72.2 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.55 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 70.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.00 ms. Allocated memory is still 96.5 MB. Free memory was 70.6 MB in the beginning and 69.7 MB in the end (delta: 983.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 431.37 ms. Allocated memory is still 96.5 MB. Free memory was 69.7 MB in the beginning and 60.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2470.49 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 59.9 MB in the beginning and 54.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. * Witness Printer took 94.41 ms. Allocated memory is still 117.4 MB. Free memory was 54.9 MB in the beginning and 94.3 MB in the end (delta: -39.4 MB). Peak memory consumption was 2.2 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: 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, 17 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2361.3ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 0.0ms, AutomataDifference: 427.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 46.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 12 SDslu, 13 SDs, 0 SdLazy, 50 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 86.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 230.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=2, InterpolantAutomatonStates: 17, 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: 32.7ms SsaConstructionTime, 65.5ms SatisfiabilityAnalysisTime, 671.8ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 142 SizeOfPredicates, 8 NumberOfNonLiveVariables, 195 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 7/9 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 19:46:10,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac405089-9966-48c6-a2f9-579067b6c2d1/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...