./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-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_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/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_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/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_b8307fd8-f90c-4908-844d-b9aec71b7f1a/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 0319027e70a0d2daf010f688863825be9b20c732 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 19:49:45,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:49:45,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:49:45,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:49:45,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:49:45,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:49:45,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:49:46,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:49:46,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:49:46,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:49:46,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:49:46,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:49:46,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:49:46,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:49:46,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:49:46,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:49:46,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:49:46,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:49:46,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:49:46,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:49:46,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:49:46,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:49:46,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:49:46,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:49:46,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:49:46,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:49:46,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:49:46,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:49:46,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:49:46,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:49:46,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:49:46,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:49:46,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:49:46,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:49:46,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:49:46,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:49:46,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:49:46,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:49:46,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:49:46,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:49:46,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:49:46,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:49:46,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:49:46,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:49:46,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:49:46,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:49:46,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:49:46,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:49:46,085 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:49:46,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:49:46,086 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:49:46,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:49:46,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:49:46,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:49:46,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:49:46,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:49:46,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:49:46,089 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:49:46,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:49:46,090 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:49:46,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:49:46,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:49:46,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:49:46,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:49:46,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:49:46,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:49:46,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:49:46,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:49:46,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:49:46,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:49:46,093 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:49:46,094 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:49:46,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:49:46,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:49:46,094 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_b8307fd8-f90c-4908-844d-b9aec71b7f1a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0319027e70a0d2daf010f688863825be9b20c732 [2021-10-15 19:49:46,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:49:46,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:49:46,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:49:46,367 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:49:46,367 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:49:46,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2021-10-15 19:49:46,442 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/data/c29e6a65c/36645eaf5a114b0e9f5464712fcce5af/FLAG42df0c898 [2021-10-15 19:49:47,107 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:49:47,107 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2021-10-15 19:49:47,122 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/data/c29e6a65c/36645eaf5a114b0e9f5464712fcce5af/FLAG42df0c898 [2021-10-15 19:49:47,449 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/data/c29e6a65c/36645eaf5a114b0e9f5464712fcce5af [2021-10-15 19:49:47,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:49:47,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:49:47,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:49:47,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:49:47,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:49:47,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:49:47" (1/1) ... [2021-10-15 19:49:47,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@367a99da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:49:47, skipping insertion in model container [2021-10-15 19:49:47,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:49:47" (1/1) ... [2021-10-15 19:49:47,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:49:47,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:49:47,673 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_b8307fd8-f90c-4908-844d-b9aec71b7f1a/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c[576,589] [2021-10-15 19:49:47,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:49:47,731 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:49:47,745 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_b8307fd8-f90c-4908-844d-b9aec71b7f1a/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c[576,589] [2021-10-15 19:49:47,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:49:47,767 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:49:47,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:49:47 WrapperNode [2021-10-15 19:49:47,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:49:47,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:49:47,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:49:47,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:49:47,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:49:47" (1/1) ... [2021-10-15 19:49:47,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:49:47" (1/1) ... [2021-10-15 19:49:47,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:49:47,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:49:47,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:49:47,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:49:47,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:49:47" (1/1) ... [2021-10-15 19:49:47,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:49:47" (1/1) ... [2021-10-15 19:49:47,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:49:47" (1/1) ... [2021-10-15 19:49:47,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:49:47" (1/1) ... [2021-10-15 19:49:47,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:49:47" (1/1) ... [2021-10-15 19:49:47,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:49:47" (1/1) ... [2021-10-15 19:49:47,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:49:47" (1/1) ... [2021-10-15 19:49:47,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:49:47,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:49:47,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:49:47,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:49:47,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:49:47" (1/1) ... [2021-10-15 19:49:47,871 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:49:47,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:49:47,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:49:47,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:49:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:49:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:49:47,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:49:47,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:49:48,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:49:48,272 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-15 19:49:48,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:49:48 BoogieIcfgContainer [2021-10-15 19:49:48,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:49:48,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:49:48,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:49:48,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:49:48,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:49:47" (1/3) ... [2021-10-15 19:49:48,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc06ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:49:48, skipping insertion in model container [2021-10-15 19:49:48,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:49:47" (2/3) ... [2021-10-15 19:49:48,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc06ee8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:49:48, skipping insertion in model container [2021-10-15 19:49:48,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:49:48" (3/3) ... [2021-10-15 19:49:48,284 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound1.c [2021-10-15 19:49:48,290 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:49:48,290 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-15 19:49:48,344 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:49:48,351 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 19:49:48,351 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-15 19:49:48,364 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 43 places, 58 transitions, 116 flow [2021-10-15 19:49:48,396 INFO L129 PetriNetUnfolder]: 16/58 cut-off events. [2021-10-15 19:49:48,397 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:49:48,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 58 events. 16/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:49:48,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 58 transitions, 116 flow [2021-10-15 19:49:48,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 53 transitions, 106 flow [2021-10-15 19:49:48,412 INFO L129 PetriNetUnfolder]: 5/20 cut-off events. [2021-10-15 19:49:48,413 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:49:48,413 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:49:48,414 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:49:48,415 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-15 19:49:48,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:49:48,428 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2021-10-15 19:49:48,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:49:48,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539042616] [2021-10-15 19:49:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:49:48,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:49:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:49:48,638 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 19:49:48,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:49:48,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539042616] [2021-10-15 19:49:48,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539042616] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:49:48,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:49:48,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:49:48,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178270987] [2021-10-15 19:49:48,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:49:48,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:49:48,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:49:48,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:49:48,676 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 58 [2021-10-15 19:49:48,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 53 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:49:48,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:49:48,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 58 [2021-10-15 19:49:48,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:49:48,700 INFO L129 PetriNetUnfolder]: 2/40 cut-off events. [2021-10-15 19:49:48,700 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:49:48,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 40 events. 2/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 11/43 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2021-10-15 19:49:48,703 INFO L132 encePairwiseOnDemand]: 45/58 looper letters, 0 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2021-10-15 19:49:48,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 40 transitions, 80 flow [2021-10-15 19:49:48,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:49:48,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:49:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 101 transitions. [2021-10-15 19:49:48,718 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8706896551724138 [2021-10-15 19:49:48,719 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 101 transitions. [2021-10-15 19:49:48,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 101 transitions. [2021-10-15 19:49:48,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:49:48,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 101 transitions. [2021-10-15 19:49:48,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 50.5) internal successors, (101), 2 states have internal predecessors, (101), 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 19:49:48,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 19:49:48,735 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 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 19:49:48,737 INFO L186 Difference]: Start difference. First operand has 39 places, 53 transitions, 106 flow. Second operand 2 states and 101 transitions. [2021-10-15 19:49:48,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 40 transitions, 80 flow [2021-10-15 19:49:48,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:49:48,749 INFO L242 Difference]: Finished difference. Result has 40 places, 40 transitions, 80 flow [2021-10-15 19:49:48,752 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2021-10-15 19:49:48,753 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2021-10-15 19:49:48,755 INFO L470 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 80 flow [2021-10-15 19:49:48,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 45.5) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:49:48,755 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:49:48,755 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:49:48,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:49:48,756 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-15 19:49:48,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:49:48,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2021-10-15 19:49:48,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:49:48,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26314989] [2021-10-15 19:49:48,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:49:48,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:49:48,815 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:49:48,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1617702700] [2021-10-15 19:49:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:49:48,817 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:49:48,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:49:48,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:49:48,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:49:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:49:48,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-15 19:49:48,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:49:49,438 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 19:49:49,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:49:49,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26314989] [2021-10-15 19:49:49,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:49:49,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617702700] [2021-10-15 19:49:49,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617702700] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:49:49,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:49:49,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-15 19:49:49,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553759631] [2021-10-15 19:49:49,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:49:49,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:49:49,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:49:49,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:49:49,456 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 58 [2021-10-15 19:49:49,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 80 flow. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:49:49,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:49:49,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 58 [2021-10-15 19:49:49,459 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:49:49,720 INFO L129 PetriNetUnfolder]: 2/51 cut-off events. [2021-10-15 19:49:49,724 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:49:49,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 51 events. 2/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 92. Up to 27 conditions per place. [2021-10-15 19:49:49,727 INFO L132 encePairwiseOnDemand]: 49/58 looper letters, 33 selfloop transitions, 8 changer transitions 0/49 dead transitions. [2021-10-15 19:49:49,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 180 flow [2021-10-15 19:49:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:49:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:49:49,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2021-10-15 19:49:49,736 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.2801724137931034 [2021-10-15 19:49:49,737 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 130 transitions. [2021-10-15 19:49:49,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 130 transitions. [2021-10-15 19:49:49,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:49:49,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 130 transitions. [2021-10-15 19:49:49,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 16.25) internal successors, (130), 8 states have internal predecessors, (130), 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 19:49:49,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 58.0) internal successors, (522), 9 states have internal predecessors, (522), 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 19:49:49,752 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 58.0) internal successors, (522), 9 states have internal predecessors, (522), 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 19:49:49,752 INFO L186 Difference]: Start difference. First operand has 40 places, 40 transitions, 80 flow. Second operand 8 states and 130 transitions. [2021-10-15 19:49:49,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 180 flow [2021-10-15 19:49:49,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:49:49,758 INFO L242 Difference]: Finished difference. Result has 49 places, 43 transitions, 116 flow [2021-10-15 19:49:49,758 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=116, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2021-10-15 19:49:49,759 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2021-10-15 19:49:49,759 INFO L470 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 116 flow [2021-10-15 19:49:49,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:49:49,760 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:49:49,760 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:49:49,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:49:49,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:49:49,966 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-15 19:49:49,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:49:49,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1277171076, now seen corresponding path program 1 times [2021-10-15 19:49:49,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:49:49,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015961722] [2021-10-15 19:49:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:49:49,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:49:49,989 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:49:49,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122164720] [2021-10-15 19:49:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:49:49,990 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:49:49,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:49:49,991 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:49:50,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 19:49:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:49:50,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-15 19:49:50,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:49:50,292 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 19:49:50,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:49:50,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015961722] [2021-10-15 19:49:50,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:49:50,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122164720] [2021-10-15 19:49:50,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122164720] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:49:50,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:49:50,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-15 19:49:50,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413209928] [2021-10-15 19:49:50,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:49:50,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:49:50,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:49:50,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:49:50,297 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 58 [2021-10-15 19:49:50,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 116 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 19:49:50,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:49:50,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 58 [2021-10-15 19:49:50,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:49:50,515 INFO L129 PetriNetUnfolder]: 3/65 cut-off events. [2021-10-15 19:49:50,515 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:49:50,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 65 events. 3/65 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 132. Up to 26 conditions per place. [2021-10-15 19:49:50,517 INFO L132 encePairwiseOnDemand]: 45/58 looper letters, 40 selfloop transitions, 10 changer transitions 2/61 dead transitions. [2021-10-15 19:49:50,517 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 61 transitions, 256 flow [2021-10-15 19:49:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:49:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:49:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2021-10-15 19:49:50,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3254310344827586 [2021-10-15 19:49:50,520 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 151 transitions. [2021-10-15 19:49:50,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 151 transitions. [2021-10-15 19:49:50,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:49:50,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 151 transitions. [2021-10-15 19:49:50,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 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 19:49:50,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 58.0) internal successors, (522), 9 states have internal predecessors, (522), 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 19:49:50,525 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 58.0) internal successors, (522), 9 states have internal predecessors, (522), 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 19:49:50,525 INFO L186 Difference]: Start difference. First operand has 49 places, 43 transitions, 116 flow. Second operand 8 states and 151 transitions. [2021-10-15 19:49:50,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 61 transitions, 256 flow [2021-10-15 19:49:50,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 246 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-15 19:49:50,530 INFO L242 Difference]: Finished difference. Result has 53 places, 47 transitions, 158 flow [2021-10-15 19:49:50,530 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=158, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2021-10-15 19:49:50,530 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2021-10-15 19:49:50,531 INFO L470 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 158 flow [2021-10-15 19:49:50,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 19:49:50,531 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:49:50,532 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:49:50,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:49:50,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:49:50,749 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-15 19:49:50,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:49:50,750 INFO L82 PathProgramCache]: Analyzing trace with hash 916732292, now seen corresponding path program 1 times [2021-10-15 19:49:50,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:49:50,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588382424] [2021-10-15 19:49:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:49:50,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:49:50,768 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:49:50,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853223690] [2021-10-15 19:49:50,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:49:50,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:49:50,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:49:50,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:49:50,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-15 19:49:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:49:50,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-15 19:49:50,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:49:51,133 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 19:49:51,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:49:51,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588382424] [2021-10-15 19:49:51,135 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:49:51,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853223690] [2021-10-15 19:49:51,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853223690] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:49:51,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:49:51,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-15 19:49:51,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056773568] [2021-10-15 19:49:51,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-15 19:49:51,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:49:51,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-15 19:49:51,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-15 19:49:51,140 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 58 [2021-10-15 19:49:51,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 158 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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 19:49:51,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:49:51,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 58 [2021-10-15 19:49:51,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:49:51,504 INFO L129 PetriNetUnfolder]: 5/103 cut-off events. [2021-10-15 19:49:51,504 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-10-15 19:49:51,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 103 events. 5/103 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 182 event pairs, 0 based on Foata normal form. 1/92 useless extension candidates. Maximal degree in co-relation 239. Up to 24 conditions per place. [2021-10-15 19:49:51,506 INFO L132 encePairwiseOnDemand]: 36/58 looper letters, 31 selfloop transitions, 33 changer transitions 0/72 dead transitions. [2021-10-15 19:49:51,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 72 transitions, 367 flow [2021-10-15 19:49:51,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:49:51,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:49:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2021-10-15 19:49:51,513 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.2896551724137931 [2021-10-15 19:49:51,513 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 168 transitions. [2021-10-15 19:49:51,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 168 transitions. [2021-10-15 19:49:51,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:49:51,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 168 transitions. [2021-10-15 19:49:51,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.8) internal successors, (168), 10 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 19:49:51,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 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 19:49:51,522 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 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 19:49:51,522 INFO L186 Difference]: Start difference. First operand has 53 places, 47 transitions, 158 flow. Second operand 10 states and 168 transitions. [2021-10-15 19:49:51,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 72 transitions, 367 flow [2021-10-15 19:49:51,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 72 transitions, 356 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-15 19:49:51,530 INFO L242 Difference]: Finished difference. Result has 60 places, 64 transitions, 338 flow [2021-10-15 19:49:51,531 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=338, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2021-10-15 19:49:51,531 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2021-10-15 19:49:51,531 INFO L470 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 338 flow [2021-10-15 19:49:51,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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 19:49:51,531 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:49:51,532 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:49:51,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:49:51,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:49:51,750 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-15 19:49:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:49:51,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2015957290, now seen corresponding path program 1 times [2021-10-15 19:49:51,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:49:51,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978714999] [2021-10-15 19:49:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:49:51,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:49:51,767 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:49:51,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238065666] [2021-10-15 19:49:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:49:51,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:49:51,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:49:51,769 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:49:51,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-15 19:49:51,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:49:51,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-15 19:49:51,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:49:52,000 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 19:49:52,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:49:52,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978714999] [2021-10-15 19:49:52,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:49:52,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238065666] [2021-10-15 19:49:52,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238065666] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:49:52,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:49:52,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:49:52,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547984256] [2021-10-15 19:49:52,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:49:52,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:49:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:49:52,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:49:52,011 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 58 [2021-10-15 19:49:52,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 19:49:52,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:49:52,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 58 [2021-10-15 19:49:52,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:49:52,161 INFO L129 PetriNetUnfolder]: 5/95 cut-off events. [2021-10-15 19:49:52,164 INFO L130 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2021-10-15 19:49:52,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 95 events. 5/95 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 151 event pairs, 0 based on Foata normal form. 4/99 useless extension candidates. Maximal degree in co-relation 314. Up to 33 conditions per place. [2021-10-15 19:49:52,167 INFO L132 encePairwiseOnDemand]: 49/58 looper letters, 37 selfloop transitions, 16 changer transitions 0/62 dead transitions. [2021-10-15 19:49:52,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 440 flow [2021-10-15 19:49:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:49:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:49:52,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2021-10-15 19:49:52,170 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.27586206896551724 [2021-10-15 19:49:52,170 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 128 transitions. [2021-10-15 19:49:52,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 128 transitions. [2021-10-15 19:49:52,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:49:52,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 128 transitions. [2021-10-15 19:49:52,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 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 19:49:52,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 58.0) internal successors, (522), 9 states have internal predecessors, (522), 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 19:49:52,175 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 58.0) internal successors, (522), 9 states have internal predecessors, (522), 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 19:49:52,175 INFO L186 Difference]: Start difference. First operand has 60 places, 64 transitions, 338 flow. Second operand 8 states and 128 transitions. [2021-10-15 19:49:52,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 440 flow [2021-10-15 19:49:52,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 431 flow, removed 1 selfloop flow, removed 4 redundant places. [2021-10-15 19:49:52,190 INFO L242 Difference]: Finished difference. Result has 61 places, 62 transitions, 357 flow [2021-10-15 19:49:52,191 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=357, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2021-10-15 19:49:52,191 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2021-10-15 19:49:52,191 INFO L470 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 357 flow [2021-10-15 19:49:52,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 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 19:49:52,192 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:49:52,192 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:49:52,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-15 19:49:52,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:49:52,413 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-15 19:49:52,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:49:52,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1552659725, now seen corresponding path program 1 times [2021-10-15 19:49:52,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:49:52,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709450470] [2021-10-15 19:49:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:49:52,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:49:52,430 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:49:52,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555949989] [2021-10-15 19:49:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:49:52,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:49:52,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:49:52,450 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:49:52,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-15 19:49:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:49:52,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-15 19:49:52,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:49:52,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:49:52,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:49:52,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709450470] [2021-10-15 19:49:52,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:49:52,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555949989] [2021-10-15 19:49:52,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555949989] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:49:52,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:49:52,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-15 19:49:52,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690598933] [2021-10-15 19:49:52,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:49:52,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:49:52,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:49:52,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:49:52,807 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 58 [2021-10-15 19:49:52,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 357 flow. Second operand has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 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 19:49:52,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:49:52,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 58 [2021-10-15 19:49:52,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:49:52,972 INFO L129 PetriNetUnfolder]: 1/44 cut-off events. [2021-10-15 19:49:52,973 INFO L130 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2021-10-15 19:49:52,973 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 44 events. 1/44 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 2/46 useless extension candidates. Maximal degree in co-relation 141. Up to 16 conditions per place. [2021-10-15 19:49:52,974 INFO L132 encePairwiseOnDemand]: 50/58 looper letters, 17 selfloop transitions, 7 changer transitions 2/40 dead transitions. [2021-10-15 19:49:52,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 40 transitions, 263 flow [2021-10-15 19:49:52,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:49:52,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 19:49:52,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2021-10-15 19:49:52,981 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47509578544061304 [2021-10-15 19:49:52,981 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 248 transitions. [2021-10-15 19:49:52,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 248 transitions. [2021-10-15 19:49:52,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:49:52,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 248 transitions. [2021-10-15 19:49:52,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 27.555555555555557) internal successors, (248), 9 states have internal predecessors, (248), 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 19:49:52,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 58.0) internal successors, (580), 10 states have internal predecessors, (580), 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 19:49:52,989 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 58.0) internal successors, (580), 10 states have internal predecessors, (580), 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 19:49:52,989 INFO L186 Difference]: Start difference. First operand has 61 places, 62 transitions, 357 flow. Second operand 9 states and 248 transitions. [2021-10-15 19:49:52,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 40 transitions, 263 flow [2021-10-15 19:49:52,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 40 transitions, 226 flow, removed 4 selfloop flow, removed 8 redundant places. [2021-10-15 19:49:52,996 INFO L242 Difference]: Finished difference. Result has 53 places, 38 transitions, 180 flow [2021-10-15 19:49:52,996 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=180, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2021-10-15 19:49:52,996 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2021-10-15 19:49:52,997 INFO L470 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 180 flow [2021-10-15 19:49:52,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.0) internal successors, (216), 8 states have internal predecessors, (216), 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 19:49:52,997 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:49:52,997 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:49:53,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-15 19:49:53,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-15 19:49:53,201 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-15 19:49:53,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:49:53,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1755069467, now seen corresponding path program 1 times [2021-10-15 19:49:53,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:49:53,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999547902] [2021-10-15 19:49:53,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:49:53,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:49:53,218 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:49:53,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1378590876] [2021-10-15 19:49:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:49:53,219 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:49:53,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:49:53,223 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:49:53,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-15 19:49:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:49:53,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-15 19:49:53,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:49:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:49:54,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:49:54,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999547902] [2021-10-15 19:49:54,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:49:54,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378590876] [2021-10-15 19:49:54,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378590876] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:49:54,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:49:54,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-15 19:49:54,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963617447] [2021-10-15 19:49:54,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-15 19:49:54,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:49:54,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-15 19:49:54,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-15 19:49:54,009 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 58 [2021-10-15 19:49:54,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 180 flow. Second operand has 11 states, 11 states have (on average 13.181818181818182) internal successors, (145), 11 states have internal predecessors, (145), 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 19:49:54,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:49:54,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 58 [2021-10-15 19:49:54,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:49:54,278 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-10-15 19:49:54,278 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-10-15 19:49:54,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 28 events. 0/28 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 3/31 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-10-15 19:49:54,278 INFO L132 encePairwiseOnDemand]: 45/58 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2021-10-15 19:49:54,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 28 transitions, 191 flow [2021-10-15 19:49:54,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-15 19:49:54,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-15 19:49:54,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2021-10-15 19:49:54,280 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.23275862068965517 [2021-10-15 19:49:54,280 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 162 transitions. [2021-10-15 19:49:54,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 162 transitions. [2021-10-15 19:49:54,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:49:54,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 162 transitions. [2021-10-15 19:49:54,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 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 19:49:54,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 58.0) internal successors, (754), 13 states have internal predecessors, (754), 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 19:49:54,284 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 58.0) internal successors, (754), 13 states have internal predecessors, (754), 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 19:49:54,284 INFO L186 Difference]: Start difference. First operand has 53 places, 38 transitions, 180 flow. Second operand 12 states and 162 transitions. [2021-10-15 19:49:54,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 28 transitions, 191 flow [2021-10-15 19:49:54,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 28 transitions, 150 flow, removed 0 selfloop flow, removed 13 redundant places. [2021-10-15 19:49:54,286 INFO L242 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2021-10-15 19:49:54,286 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2021-10-15 19:49:54,287 INFO L334 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2021-10-15 19:49:54,287 INFO L470 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2021-10-15 19:49:54,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.181818181818182) internal successors, (145), 11 states have internal predecessors, (145), 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 19:49:54,289 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:49:54,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:49:54,290 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:49:54,291 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:49:54,291 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:49:54,291 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:49:54,291 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:49:54,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-15 19:49:54,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-15 19:49:54,518 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:49:54,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:49:54 BoogieIcfgContainer [2021-10-15 19:49:54,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:49:54,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:49:54,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:49:54,525 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:49:54,525 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:49:48" (3/4) ... [2021-10-15 19:49:54,528 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:49:54,540 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-15 19:49:54,541 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:49:54,541 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:49:54,542 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:49:54,611 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:49:54,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:49:54,614 INFO L168 Benchmark]: Toolchain (without parser) took 7159.37 ms. Allocated memory was 102.8 MB in the beginning and 192.9 MB in the end (delta: 90.2 MB). Free memory was 73.2 MB in the beginning and 131.1 MB in the end (delta: -57.9 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:49:54,614 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 61.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:49:54,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.17 ms. Allocated memory was 102.8 MB in the beginning and 159.4 MB in the end (delta: 56.6 MB). Free memory was 73.0 MB in the beginning and 134.1 MB in the end (delta: -61.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:49:54,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.85 ms. Allocated memory is still 159.4 MB. Free memory was 134.1 MB in the beginning and 132.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:49:54,616 INFO L168 Benchmark]: Boogie Preprocessor took 46.53 ms. Allocated memory is still 159.4 MB. Free memory was 132.7 MB in the beginning and 131.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:49:54,616 INFO L168 Benchmark]: RCFGBuilder took 412.66 ms. Allocated memory is still 159.4 MB. Free memory was 131.2 MB in the beginning and 120.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:49:54,617 INFO L168 Benchmark]: TraceAbstraction took 6247.63 ms. Allocated memory was 159.4 MB in the beginning and 192.9 MB in the end (delta: 33.6 MB). Free memory was 119.5 MB in the beginning and 134.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:49:54,617 INFO L168 Benchmark]: Witness Printer took 87.72 ms. Allocated memory is still 192.9 MB. Free memory was 134.8 MB in the beginning and 131.1 MB in the end (delta: 3.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:49:54,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 61.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.17 ms. Allocated memory was 102.8 MB in the beginning and 159.4 MB in the end (delta: 56.6 MB). Free memory was 73.0 MB in the beginning and 134.1 MB in the end (delta: -61.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.85 ms. Allocated memory is still 159.4 MB. Free memory was 134.1 MB in the beginning and 132.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.53 ms. Allocated memory is still 159.4 MB. Free memory was 132.7 MB in the beginning and 131.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 412.66 ms. Allocated memory is still 159.4 MB. Free memory was 131.2 MB in the beginning and 120.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6247.63 ms. Allocated memory was 159.4 MB in the beginning and 192.9 MB in the end (delta: 33.6 MB). Free memory was 119.5 MB in the beginning and 134.8 MB in the end (delta: -15.2 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. * Witness Printer took 87.72 ms. Allocated memory is still 192.9 MB. Free memory was 134.8 MB in the beginning and 131.1 MB in the end (delta: 3.7 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 - 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 - 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 - 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, 43 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6178.9ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 1670.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 54.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 67 SDtfs, 532 SDslu, 103 SDs, 0 SdLazy, 457 SolverSat, 124 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 417.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1133.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=357occurred in iteration=5, InterpolantAutomatonStates: 57, 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: 48.1ms SsaConstructionTime, 161.6ms SatisfiabilityAnalysisTime, 2155.8ms InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 939 SizeOfPredicates, 54 NumberOfNonLiveVariables, 539 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 2/6 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:49:54,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8307fd8-f90c-4908-844d-b9aec71b7f1a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...