./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound10.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_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/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_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/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_5e16e228-2676-4d23-8f5a-2f3b935e9f01/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 978aef3a9c6676fa4727e3e1dda0ca6c114efab4 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:40:04,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:40:04,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:40:04,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:40:04,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:40:04,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:40:04,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:40:04,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:40:04,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:40:04,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:40:04,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:40:04,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:40:04,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:40:04,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:40:04,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:40:04,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:40:04,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:40:04,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:40:04,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:40:04,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:40:04,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:40:04,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:40:04,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:40:04,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:40:04,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:40:04,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:40:04,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:40:04,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:40:04,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:40:04,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:40:04,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:40:04,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:40:04,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:40:04,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:40:04,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:40:04,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:40:04,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:40:04,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:40:04,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:40:04,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:40:04,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:40:04,117 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:40:04,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:40:04,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:40:04,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:40:04,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:40:04,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:40:04,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:40:04,151 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:40:04,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:40:04,152 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:40:04,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:40:04,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:40:04,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:40:04,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:40:04,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:40:04,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:40:04,153 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:40:04,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:40:04,154 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:40:04,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:40:04,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:40:04,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:40:04,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:40:04,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:40:04,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:40:04,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:40:04,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:40:04,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:40:04,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:40:04,156 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:40:04,157 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:40:04,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:40:04,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:40:04,157 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_5e16e228-2676-4d23-8f5a-2f3b935e9f01/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 978aef3a9c6676fa4727e3e1dda0ca6c114efab4 [2021-10-15 19:40:04,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:40:04,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:40:04,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:40:04,494 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:40:04,494 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:40:04,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound10.c [2021-10-15 19:40:04,601 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/data/83f127f0b/2b941595288044f9899ee6ee52c78c19/FLAGeb34f77ec [2021-10-15 19:40:05,026 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:40:05,027 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound10.c [2021-10-15 19:40:05,033 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/data/83f127f0b/2b941595288044f9899ee6ee52c78c19/FLAGeb34f77ec [2021-10-15 19:40:05,424 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/data/83f127f0b/2b941595288044f9899ee6ee52c78c19 [2021-10-15 19:40:05,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:40:05,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:40:05,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:40:05,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:40:05,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:40:05,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:40:05" (1/1) ... [2021-10-15 19:40:05,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ecab17e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05, skipping insertion in model container [2021-10-15 19:40:05,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:40:05" (1/1) ... [2021-10-15 19:40:05,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:40:05,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:40:05,603 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_5e16e228-2676-4d23-8f5a-2f3b935e9f01/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound10.c[525,538] [2021-10-15 19:40:05,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:40:05,626 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:40:05,639 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_5e16e228-2676-4d23-8f5a-2f3b935e9f01/sv-benchmarks/c/nla-digbench-scaling/geo3-ll_valuebound10.c[525,538] [2021-10-15 19:40:05,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:40:05,659 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:40:05,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05 WrapperNode [2021-10-15 19:40:05,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:40:05,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:40:05,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:40:05,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:40:05,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05" (1/1) ... [2021-10-15 19:40:05,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05" (1/1) ... [2021-10-15 19:40:05,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:40:05,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:40:05,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:40:05,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:40:05,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05" (1/1) ... [2021-10-15 19:40:05,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05" (1/1) ... [2021-10-15 19:40:05,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05" (1/1) ... [2021-10-15 19:40:05,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05" (1/1) ... [2021-10-15 19:40:05,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05" (1/1) ... [2021-10-15 19:40:05,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05" (1/1) ... [2021-10-15 19:40:05,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05" (1/1) ... [2021-10-15 19:40:05,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:40:05,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:40:05,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:40:05,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:40:05,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05" (1/1) ... [2021-10-15 19:40:05,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:40:05,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:40:05,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:40:05,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:40:05,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:40:05,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:40:05,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:40:05,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:40:06,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:40:06,125 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-15 19:40:06,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:40:06 BoogieIcfgContainer [2021-10-15 19:40:06,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:40:06,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:40:06,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:40:06,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:40:06,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:40:05" (1/3) ... [2021-10-15 19:40:06,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316430f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:40:06, skipping insertion in model container [2021-10-15 19:40:06,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:40:05" (2/3) ... [2021-10-15 19:40:06,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316430f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:40:06, skipping insertion in model container [2021-10-15 19:40:06,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:40:06" (3/3) ... [2021-10-15 19:40:06,139 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll_valuebound10.c [2021-10-15 19:40:06,148 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:40:06,148 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-15 19:40:06,211 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:40:06,222 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 19:40:06,223 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-15 19:40:06,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 21 places, 28 transitions, 56 flow [2021-10-15 19:40:06,270 INFO L129 PetriNetUnfolder]: 8/28 cut-off events. [2021-10-15 19:40:06,271 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:40:06,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 28 events. 8/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:40:06,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 28 transitions, 56 flow [2021-10-15 19:40:06,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 17 places, 23 transitions, 46 flow [2021-10-15 19:40:06,292 INFO L129 PetriNetUnfolder]: 7/21 cut-off events. [2021-10-15 19:40:06,292 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:40:06,293 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:40:06,293 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:40:06,294 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:40:06,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:40:06,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2105589141, now seen corresponding path program 1 times [2021-10-15 19:40:06,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:40:06,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836345015] [2021-10-15 19:40:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:40:06,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:40:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:40:06,538 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 19:40:06,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:40:06,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836345015] [2021-10-15 19:40:06,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836345015] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:40:06,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:40:06,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:40:06,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948896433] [2021-10-15 19:40:06,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:40:06,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:40:06,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:40:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:40:06,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 28 [2021-10-15 19:40:06,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 23 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:06,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:40:06,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 28 [2021-10-15 19:40:06,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:40:06,617 INFO L129 PetriNetUnfolder]: 1/17 cut-off events. [2021-10-15 19:40:06,632 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:40:06,634 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 17 events. 1/17 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 5/20 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2021-10-15 19:40:06,635 INFO L132 encePairwiseOnDemand]: 22/28 looper letters, 0 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2021-10-15 19:40:06,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 17 transitions, 34 flow [2021-10-15 19:40:06,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:40:06,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:40:06,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 48 transitions. [2021-10-15 19:40:06,654 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2021-10-15 19:40:06,655 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 48 transitions. [2021-10-15 19:40:06,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 48 transitions. [2021-10-15 19:40:06,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:40:06,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 48 transitions. [2021-10-15 19:40:06,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:06,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:06,678 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:06,680 INFO L186 Difference]: Start difference. First operand has 17 places, 23 transitions, 46 flow. Second operand 2 states and 48 transitions. [2021-10-15 19:40:06,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 17 transitions, 34 flow [2021-10-15 19:40:06,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 34 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:40:06,685 INFO L242 Difference]: Finished difference. Result has 18 places, 17 transitions, 34 flow [2021-10-15 19:40:06,687 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=18, PETRI_TRANSITIONS=17} [2021-10-15 19:40:06,693 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2021-10-15 19:40:06,693 INFO L470 AbstractCegarLoop]: Abstraction has has 18 places, 17 transitions, 34 flow [2021-10-15 19:40:06,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:06,694 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:40:06,694 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:40:06,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:40:06,695 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:40:06,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:40:06,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-15 19:40:06,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:40:06,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430059335] [2021-10-15 19:40:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:40:06,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:40:06,741 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:40:06,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952381646] [2021-10-15 19:40:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:40:06,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:40:06,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:40:06,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:40:06,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:40:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:40:06,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-15 19:40:06,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:40:07,076 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 19:40:07,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:40:07,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430059335] [2021-10-15 19:40:07,078 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:40:07,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952381646] [2021-10-15 19:40:07,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952381646] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:40:07,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:40:07,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:40:07,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991360007] [2021-10-15 19:40:07,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:40:07,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:40:07,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:40:07,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:40:07,088 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 28 [2021-10-15 19:40:07,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 17 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:07,090 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:40:07,090 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 28 [2021-10-15 19:40:07,090 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:40:07,164 INFO L129 PetriNetUnfolder]: 1/23 cut-off events. [2021-10-15 19:40:07,164 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:40:07,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 23 events. 1/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 37. Up to 10 conditions per place. [2021-10-15 19:40:07,165 INFO L132 encePairwiseOnDemand]: 23/28 looper letters, 9 selfloop transitions, 4 changer transitions 1/22 dead transitions. [2021-10-15 19:40:07,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 22 transitions, 72 flow [2021-10-15 19:40:07,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:40:07,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:40:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2021-10-15 19:40:07,167 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2021-10-15 19:40:07,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 66 transitions. [2021-10-15 19:40:07,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 66 transitions. [2021-10-15 19:40:07,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:40:07,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 66 transitions. [2021-10-15 19:40:07,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:07,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:07,171 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:07,172 INFO L186 Difference]: Start difference. First operand has 18 places, 17 transitions, 34 flow. Second operand 5 states and 66 transitions. [2021-10-15 19:40:07,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 22 transitions, 72 flow [2021-10-15 19:40:07,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 22 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:40:07,174 INFO L242 Difference]: Finished difference. Result has 23 places, 20 transitions, 58 flow [2021-10-15 19:40:07,175 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=23, PETRI_TRANSITIONS=20} [2021-10-15 19:40:07,175 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, 6 predicate places. [2021-10-15 19:40:07,175 INFO L470 AbstractCegarLoop]: Abstraction has has 23 places, 20 transitions, 58 flow [2021-10-15 19:40:07,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:07,176 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:40:07,176 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:40:07,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:40:07,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:40:07,405 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:40:07,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:40:07,406 INFO L82 PathProgramCache]: Analyzing trace with hash -937492348, now seen corresponding path program 1 times [2021-10-15 19:40:07,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:40:07,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828078591] [2021-10-15 19:40:07,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:40:07,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:40:07,431 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:40:07,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [904704541] [2021-10-15 19:40:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:40:07,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:40:07,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:40:07,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:40:07,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 19:40:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:40:07,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-15 19:40:07,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:40:07,718 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 19:40:07,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:40:07,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828078591] [2021-10-15 19:40:07,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:40:07,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904704541] [2021-10-15 19:40:07,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904704541] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:40:07,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:40:07,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-15 19:40:07,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766207117] [2021-10-15 19:40:07,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:40:07,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:40:07,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:40:07,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:40:07,729 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 28 [2021-10-15 19:40:07,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 58 flow. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 19:40:07,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:40:07,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 28 [2021-10-15 19:40:07,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:40:07,818 INFO L129 PetriNetUnfolder]: 1/28 cut-off events. [2021-10-15 19:40:07,819 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:40:07,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 28 events. 1/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 2/30 useless extension candidates. Maximal degree in co-relation 57. Up to 10 conditions per place. [2021-10-15 19:40:07,820 INFO L132 encePairwiseOnDemand]: 23/28 looper letters, 11 selfloop transitions, 5 changer transitions 2/26 dead transitions. [2021-10-15 19:40:07,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 26 transitions, 110 flow [2021-10-15 19:40:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:40:07,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:40:07,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2021-10-15 19:40:07,825 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2021-10-15 19:40:07,825 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 80 transitions. [2021-10-15 19:40:07,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 80 transitions. [2021-10-15 19:40:07,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:40:07,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 80 transitions. [2021-10-15 19:40:07,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:07,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:07,832 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:07,832 INFO L186 Difference]: Start difference. First operand has 23 places, 20 transitions, 58 flow. Second operand 6 states and 80 transitions. [2021-10-15 19:40:07,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 26 transitions, 110 flow [2021-10-15 19:40:07,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:40:07,839 INFO L242 Difference]: Finished difference. Result has 30 places, 22 transitions, 88 flow [2021-10-15 19:40:07,840 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=88, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2021-10-15 19:40:07,840 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, 13 predicate places. [2021-10-15 19:40:07,840 INFO L470 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 88 flow [2021-10-15 19:40:07,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 19:40:07,841 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:40:07,841 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:40:07,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:40:08,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:40:08,064 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:40:08,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:40:08,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1342734009, now seen corresponding path program 2 times [2021-10-15 19:40:08,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:40:08,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052709321] [2021-10-15 19:40:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:40:08,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:40:08,093 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:40:08,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609426462] [2021-10-15 19:40:08,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:40:08,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:40:08,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:40:08,105 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:40:08,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-15 19:40:08,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 19:40:08,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:40:08,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-15 19:40:08,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:40:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:40:08,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:40:08,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052709321] [2021-10-15 19:40:08,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:40:08,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609426462] [2021-10-15 19:40:08,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609426462] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:40:08,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:40:08,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-15 19:40:08,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363629889] [2021-10-15 19:40:08,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:40:08,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:40:08,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:40:08,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:40:08,431 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 28 [2021-10-15 19:40:08,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:08,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:40:08,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 28 [2021-10-15 19:40:08,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:40:08,963 INFO L129 PetriNetUnfolder]: 1/33 cut-off events. [2021-10-15 19:40:08,963 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2021-10-15 19:40:08,964 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 33 events. 1/33 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 2/35 useless extension candidates. Maximal degree in co-relation 81. Up to 10 conditions per place. [2021-10-15 19:40:08,964 INFO L132 encePairwiseOnDemand]: 23/28 looper letters, 13 selfloop transitions, 6 changer transitions 3/30 dead transitions. [2021-10-15 19:40:08,964 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 156 flow [2021-10-15 19:40:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:40:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:40:08,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2021-10-15 19:40:08,966 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47959183673469385 [2021-10-15 19:40:08,966 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 94 transitions. [2021-10-15 19:40:08,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 94 transitions. [2021-10-15 19:40:08,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:40:08,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 94 transitions. [2021-10-15 19:40:08,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:08,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:08,969 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:08,970 INFO L186 Difference]: Start difference. First operand has 30 places, 22 transitions, 88 flow. Second operand 7 states and 94 transitions. [2021-10-15 19:40:08,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 156 flow [2021-10-15 19:40:08,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 146 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-15 19:40:08,973 INFO L242 Difference]: Finished difference. Result has 35 places, 24 transitions, 114 flow [2021-10-15 19:40:08,973 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=114, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2021-10-15 19:40:08,973 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, 18 predicate places. [2021-10-15 19:40:08,974 INFO L470 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 114 flow [2021-10-15 19:40:08,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:40:08,974 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:40:08,974 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:40:09,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:40:09,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:40:09,201 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:40:09,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:40:09,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1931585436, now seen corresponding path program 3 times [2021-10-15 19:40:09,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:40:09,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27928716] [2021-10-15 19:40:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:40:09,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:40:09,217 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:40:09,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780092300] [2021-10-15 19:40:09,217 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 19:40:09,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:40:09,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:40:09,218 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:40:09,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-15 19:40:09,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-15 19:40:09,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:40:09,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 34 conjunts are in the unsatisfiable core [2021-10-15 19:40:09,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:40:23,808 WARN L207 SmtUtils]: Spent 6.12 s on a formula simplification that was a NOOP. DAG size: 33 [2021-10-15 19:40:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:40:41,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:40:41,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27928716] [2021-10-15 19:40:41,535 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:40:41,535 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780092300] [2021-10-15 19:40:41,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780092300] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:40:41,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:40:41,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-15 19:40:41,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889123380] [2021-10-15 19:40:41,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-15 19:40:41,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:40:41,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-15 19:40:41,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-10-15 19:40:41,538 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 28 [2021-10-15 19:40:41,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 114 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 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 19:40:41,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:40:41,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 28 [2021-10-15 19:40:41,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:41:04,274 WARN L207 SmtUtils]: Spent 14.21 s on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2021-10-15 19:41:13,778 WARN L207 SmtUtils]: Spent 5.42 s on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2021-10-15 19:41:34,724 WARN L207 SmtUtils]: Spent 20.54 s on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2021-10-15 19:41:38,810 INFO L129 PetriNetUnfolder]: 1/29 cut-off events. [2021-10-15 19:41:38,811 INFO L130 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2021-10-15 19:41:38,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 29 events. 1/29 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 12 event pairs, 0 based on Foata normal form. 2/31 useless extension candidates. Maximal degree in co-relation 80. Up to 7 conditions per place. [2021-10-15 19:41:38,811 INFO L132 encePairwiseOnDemand]: 17/28 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2021-10-15 19:41:38,812 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 24 transitions, 146 flow [2021-10-15 19:41:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-15 19:41:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-15 19:41:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 99 transitions. [2021-10-15 19:41:38,815 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.27197802197802196 [2021-10-15 19:41:38,815 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 99 transitions. [2021-10-15 19:41:38,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 99 transitions. [2021-10-15 19:41:38,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:41:38,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 99 transitions. [2021-10-15 19:41:38,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 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 19:41:38,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 28.0) internal successors, (392), 14 states have internal predecessors, (392), 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 19:41:38,818 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 28.0) internal successors, (392), 14 states have internal predecessors, (392), 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 19:41:38,819 INFO L186 Difference]: Start difference. First operand has 35 places, 24 transitions, 114 flow. Second operand 13 states and 99 transitions. [2021-10-15 19:41:38,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 24 transitions, 146 flow [2021-10-15 19:41:38,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 24 transitions, 130 flow, removed 4 selfloop flow, removed 4 redundant places. [2021-10-15 19:41:38,828 INFO L242 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2021-10-15 19:41:38,828 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2021-10-15 19:41:38,828 INFO L334 CegarLoopForPetriNet]: 17 programPoint places, 22 predicate places. [2021-10-15 19:41:38,829 INFO L470 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2021-10-15 19:41:38,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 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 19:41:38,832 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:41:38,833 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:41:38,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:41:39,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:41:39,038 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:41:39,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:41:39 BoogieIcfgContainer [2021-10-15 19:41:39,043 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:41:39,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:41:39,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:41:39,044 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:41:39,044 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:40:06" (3/4) ... [2021-10-15 19:41:39,047 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:41:39,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-15 19:41:39,058 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:41:39,059 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:41:39,059 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:41:39,112 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:41:39,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:41:39,115 INFO L168 Benchmark]: Toolchain (without parser) took 93686.33 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 63.1 MB in the beginning and 89.6 MB in the end (delta: -26.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:41:39,115 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory was 47.1 MB in the beginning and 47.0 MB in the end (delta: 50.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:41:39,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.03 ms. Allocated memory is still 98.6 MB. Free memory was 62.9 MB in the beginning and 53.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:39,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.12 ms. Allocated memory is still 98.6 MB. Free memory was 53.0 MB in the beginning and 51.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:39,117 INFO L168 Benchmark]: Boogie Preprocessor took 20.03 ms. Allocated memory is still 98.6 MB. Free memory was 51.5 MB in the beginning and 50.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:41:39,118 INFO L168 Benchmark]: RCFGBuilder took 406.17 ms. Allocated memory is still 98.6 MB. Free memory was 50.3 MB in the beginning and 68.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:39,118 INFO L168 Benchmark]: TraceAbstraction took 92912.94 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 68.3 MB in the beginning and 92.5 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:41:39,118 INFO L168 Benchmark]: Witness Printer took 70.53 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 89.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:39,121 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory was 47.1 MB in the beginning and 47.0 MB in the end (delta: 50.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 231.03 ms. Allocated memory is still 98.6 MB. Free memory was 62.9 MB in the beginning and 53.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.12 ms. Allocated memory is still 98.6 MB. Free memory was 53.0 MB in the beginning and 51.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.03 ms. Allocated memory is still 98.6 MB. Free memory was 51.5 MB in the beginning and 50.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 406.17 ms. Allocated memory is still 98.6 MB. Free memory was 50.3 MB in the beginning and 68.9 MB in the end (delta: -18.6 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 92912.94 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 68.3 MB in the beginning and 92.5 MB in the end (delta: -24.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 70.53 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 89.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 9.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 92832.6ms, OverallIterations: 5, TraceHistogramMax: 4, EmptinessCheckTime: 0.0ms, AutomataDifference: 58144.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 60.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 30 SDslu, 35 SDs, 0 SdLazy, 162 SolverSat, 38 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 16757.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 50856.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=4, InterpolantAutomatonStates: 33, 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: 42.1ms SsaConstructionTime, 656.0ms SatisfiabilityAnalysisTime, 32506.2ms InterpolantComputationTime, 73 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 706 SizeOfPredicates, 34 NumberOfNonLiveVariables, 352 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 11/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:41:39,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e16e228-2676-4d23-8f5a-2f3b935e9f01/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...