./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.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_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/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_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/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_1df00cda-eb7f-4bb5-bf26-07ea783d5553/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 39bbda04ca16eb75ea07b4929f3af02faa55a8e5 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:55:40,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:55:40,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:55:40,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:55:40,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:55:40,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:55:40,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:55:40,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:55:40,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:55:40,771 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:55:40,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:55:40,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:55:40,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:55:40,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:55:40,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:55:40,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:55:40,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:55:40,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:55:40,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:55:40,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:55:40,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:55:40,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:55:40,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:55:40,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:55:40,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:55:40,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:55:40,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:55:40,815 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:55:40,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:55:40,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:55:40,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:55:40,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:55:40,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:55:40,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:55:40,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:55:40,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:55:40,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:55:40,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:55:40,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:55:40,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:55:40,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:55:40,841 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:55:40,896 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:55:40,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:55:40,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:55:40,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:55:40,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:55:40,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:55:40,900 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:55:40,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:55:40,901 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:55:40,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:55:40,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:55:40,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:55:40,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:55:40,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:55:40,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:55:40,903 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:55:40,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:55:40,904 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:55:40,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:55:40,905 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:55:40,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:55:40,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:55:40,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:55:40,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:55:40,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:55:40,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:55:40,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:55:40,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:55:40,908 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:55:40,908 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:55:40,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:55:40,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:55:40,909 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_1df00cda-eb7f-4bb5-bf26-07ea783d5553/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39bbda04ca16eb75ea07b4929f3af02faa55a8e5 [2021-10-15 19:55:41,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:55:41,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:55:41,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:55:41,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:55:41,276 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:55:41,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.c [2021-10-15 19:55:41,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/data/a791b9d5b/a233300001cf44bca49581e483959136/FLAG707dc9e72 [2021-10-15 19:55:42,068 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:55:42,069 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.c [2021-10-15 19:55:42,078 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/data/a791b9d5b/a233300001cf44bca49581e483959136/FLAG707dc9e72 [2021-10-15 19:55:42,425 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/data/a791b9d5b/a233300001cf44bca49581e483959136 [2021-10-15 19:55:42,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:55:42,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:55:42,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:55:42,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:55:42,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:55:42,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:55:42" (1/1) ... [2021-10-15 19:55:42,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43324d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:42, skipping insertion in model container [2021-10-15 19:55:42,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:55:42" (1/1) ... [2021-10-15 19:55:42,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:55:42,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:55:42,692 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_1df00cda-eb7f-4bb5-bf26-07ea783d5553/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.c[458,471] [2021-10-15 19:55:42,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:55:42,725 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:55:42,749 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_1df00cda-eb7f-4bb5-bf26-07ea783d5553/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.c[458,471] [2021-10-15 19:55:42,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:55:42,797 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:55:42,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:42 WrapperNode [2021-10-15 19:55:42,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:55:42,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:55:42,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:55:42,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:55:42,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:42" (1/1) ... [2021-10-15 19:55:42,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:42" (1/1) ... [2021-10-15 19:55:42,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:55:42,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:55:42,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:55:42,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:55:42,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:42" (1/1) ... [2021-10-15 19:55:42,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:42" (1/1) ... [2021-10-15 19:55:42,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:42" (1/1) ... [2021-10-15 19:55:42,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:42" (1/1) ... [2021-10-15 19:55:42,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:42" (1/1) ... [2021-10-15 19:55:42,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:42" (1/1) ... [2021-10-15 19:55:42,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:42" (1/1) ... [2021-10-15 19:55:42,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:55:42,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:55:42,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:55:42,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:55:42,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:42" (1/1) ... [2021-10-15 19:55:42,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:55:42,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:55:42,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:55:42,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:55:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:55:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:55:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:55:43,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:55:43,339 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:55:43,339 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-15 19:55:43,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:55:43 BoogieIcfgContainer [2021-10-15 19:55:43,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:55:43,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:55:43,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:55:43,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:55:43,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:55:42" (1/3) ... [2021-10-15 19:55:43,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1534298f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:55:43, skipping insertion in model container [2021-10-15 19:55:43,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:55:42" (2/3) ... [2021-10-15 19:55:43,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1534298f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:55:43, skipping insertion in model container [2021-10-15 19:55:43,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:55:43" (3/3) ... [2021-10-15 19:55:43,367 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound2.c [2021-10-15 19:55:43,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:55:43,390 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-15 19:55:43,488 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:55:43,497 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 19:55:43,497 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-15 19:55:43,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 25 transitions, 50 flow [2021-10-15 19:55:43,563 INFO L129 PetriNetUnfolder]: 6/25 cut-off events. [2021-10-15 19:55:43,564 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:55:43,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26 conditions, 25 events. 6/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:55:43,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 25 transitions, 50 flow [2021-10-15 19:55:43,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 16 places, 20 transitions, 40 flow [2021-10-15 19:55:43,582 INFO L129 PetriNetUnfolder]: 5/15 cut-off events. [2021-10-15 19:55:43,583 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:55:43,583 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:55:43,584 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-15 19:55:43,587 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:55:43,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:55:43,607 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-15 19:55:43,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:55:43,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581772349] [2021-10-15 19:55:43,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:43,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:55:43,792 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:55:43,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138398226] [2021-10-15 19:55:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:43,794 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:43,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:55:43,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:55:43,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:55:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:55:43,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:55:43,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:55:44,095 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 19:55:44,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:55:44,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581772349] [2021-10-15 19:55:44,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:55:44,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138398226] [2021-10-15 19:55:44,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138398226] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:55:44,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:55:44,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:55:44,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961456369] [2021-10-15 19:55:44,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:55:44,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:55:44,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:55:44,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:55:44,162 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2021-10-15 19:55:44,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 20 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 19:55:44,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:55:44,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2021-10-15 19:55:44,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:55:44,296 INFO L129 PetriNetUnfolder]: 4/31 cut-off events. [2021-10-15 19:55:44,297 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:55:44,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 31 events. 4/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 46 event pairs, 0 based on Foata normal form. 6/35 useless extension candidates. Maximal degree in co-relation 2. Up to 12 conditions per place. [2021-10-15 19:55:44,302 INFO L132 encePairwiseOnDemand]: 15/25 looper letters, 10 selfloop transitions, 5 changer transitions 4/26 dead transitions. [2021-10-15 19:55:44,303 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 26 transitions, 90 flow [2021-10-15 19:55:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:55:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:55:44,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 77 transitions. [2021-10-15 19:55:44,325 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.616 [2021-10-15 19:55:44,326 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 77 transitions. [2021-10-15 19:55:44,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 77 transitions. [2021-10-15 19:55:44,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:55:44,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 77 transitions. [2021-10-15 19:55:44,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:55:44,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:55:44,349 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:55:44,352 INFO L186 Difference]: Start difference. First operand has 16 places, 20 transitions, 40 flow. Second operand 5 states and 77 transitions. [2021-10-15 19:55:44,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 26 transitions, 90 flow [2021-10-15 19:55:44,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 26 transitions, 90 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:55:44,361 INFO L242 Difference]: Finished difference. Result has 23 places, 21 transitions, 73 flow [2021-10-15 19:55:44,364 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2021-10-15 19:55:44,365 INFO L334 CegarLoopForPetriNet]: 16 programPoint places, 7 predicate places. [2021-10-15 19:55:44,365 INFO L470 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 73 flow [2021-10-15 19:55:44,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 19:55:44,365 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:55:44,366 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-15 19:55:44,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-15 19:55:44,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-15 19:55:44,587 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:55:44,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:55:44,590 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-10-15 19:55:44,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:55:44,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665028870] [2021-10-15 19:55:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:44,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:55:44,614 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:55:44,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463051273] [2021-10-15 19:55:44,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:44,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:44,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:55:44,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:55:44,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-15 19:55:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:55:44,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-15 19:55:44,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:55:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:55:44,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:55:44,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665028870] [2021-10-15 19:55:44,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:55:44,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463051273] [2021-10-15 19:55:44,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463051273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:55:44,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:55:44,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-15 19:55:44,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071099854] [2021-10-15 19:55:44,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:55:44,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:55:44,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:55:44,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:55:44,971 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 25 [2021-10-15 19:55:44,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 19:55:44,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:55:44,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 25 [2021-10-15 19:55:44,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:55:45,106 INFO L129 PetriNetUnfolder]: 4/42 cut-off events. [2021-10-15 19:55:45,106 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2021-10-15 19:55:45,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 42 events. 4/42 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 2/44 useless extension candidates. Maximal degree in co-relation 51. Up to 12 conditions per place. [2021-10-15 19:55:45,108 INFO L132 encePairwiseOnDemand]: 18/25 looper letters, 13 selfloop transitions, 8 changer transitions 5/33 dead transitions. [2021-10-15 19:55:45,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 33 transitions, 167 flow [2021-10-15 19:55:45,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:55:45,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:55:45,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2021-10-15 19:55:45,115 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5542857142857143 [2021-10-15 19:55:45,115 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 97 transitions. [2021-10-15 19:55:45,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 97 transitions. [2021-10-15 19:55:45,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:55:45,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 97 transitions. [2021-10-15 19:55:45,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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 19:55:45,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 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 19:55:45,125 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 25.0) internal successors, (200), 8 states have internal predecessors, (200), 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 19:55:45,126 INFO L186 Difference]: Start difference. First operand has 23 places, 21 transitions, 73 flow. Second operand 7 states and 97 transitions. [2021-10-15 19:55:45,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 33 transitions, 167 flow [2021-10-15 19:55:45,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:55:45,136 INFO L242 Difference]: Finished difference. Result has 32 places, 25 transitions, 130 flow [2021-10-15 19:55:45,136 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=130, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2021-10-15 19:55:45,137 INFO L334 CegarLoopForPetriNet]: 16 programPoint places, 16 predicate places. [2021-10-15 19:55:45,137 INFO L470 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 130 flow [2021-10-15 19:55:45,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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 19:55:45,139 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:55:45,139 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:55:45,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:55:45,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:45,367 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:55:45,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:55:45,368 INFO L82 PathProgramCache]: Analyzing trace with hash 757648847, now seen corresponding path program 1 times [2021-10-15 19:55:45,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:55:45,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572795605] [2021-10-15 19:55:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:45,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:55:45,385 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:55:45,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869940968] [2021-10-15 19:55:45,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:45,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:45,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:55:45,388 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:55:45,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-15 19:55:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:55:45,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-15 19:55:45,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:55:45,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:55:45,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:55:45,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572795605] [2021-10-15 19:55:45,537 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:55:45,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869940968] [2021-10-15 19:55:45,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869940968] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:55:45,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:55:45,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-15 19:55:45,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207079580] [2021-10-15 19:55:45,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:55:45,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:55:45,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:55:45,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:55:45,542 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 25 [2021-10-15 19:55:45,542 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 19:55:45,542 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:55:45,543 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 25 [2021-10-15 19:55:45,543 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:55:45,585 INFO L129 PetriNetUnfolder]: 3/35 cut-off events. [2021-10-15 19:55:45,586 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2021-10-15 19:55:45,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 35 events. 3/35 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 2/37 useless extension candidates. Maximal degree in co-relation 70. Up to 8 conditions per place. [2021-10-15 19:55:45,587 INFO L132 encePairwiseOnDemand]: 21/25 looper letters, 5 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-10-15 19:55:45,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 145 flow [2021-10-15 19:55:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:55:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:55:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2021-10-15 19:55:45,590 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7133333333333334 [2021-10-15 19:55:45,590 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 107 transitions. [2021-10-15 19:55:45,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 107 transitions. [2021-10-15 19:55:45,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:55:45,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 107 transitions. [2021-10-15 19:55:45,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 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 19:55:45,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:55:45,593 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:55:45,594 INFO L186 Difference]: Start difference. First operand has 32 places, 25 transitions, 130 flow. Second operand 6 states and 107 transitions. [2021-10-15 19:55:45,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 145 flow [2021-10-15 19:55:45,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 115 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-10-15 19:55:45,598 INFO L242 Difference]: Finished difference. Result has 35 places, 26 transitions, 115 flow [2021-10-15 19:55:45,599 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=115, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2021-10-15 19:55:45,599 INFO L334 CegarLoopForPetriNet]: 16 programPoint places, 19 predicate places. [2021-10-15 19:55:45,599 INFO L470 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 115 flow [2021-10-15 19:55:45,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 19:55:45,600 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:55:45,600 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:55:45,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:55:45,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:45,827 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:55:45,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:55:45,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1997070616, now seen corresponding path program 1 times [2021-10-15 19:55:45,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:55:45,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404084508] [2021-10-15 19:55:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:45,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:55:45,846 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:55:45,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065217570] [2021-10-15 19:55:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:45,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:45,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:55:45,848 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:55:45,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-15 19:55:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:55:45,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-15 19:55:45,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:55:46,177 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 19:55:46,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:55:46,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404084508] [2021-10-15 19:55:46,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:55:46,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065217570] [2021-10-15 19:55:46,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065217570] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:55:46,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:55:46,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-15 19:55:46,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221832449] [2021-10-15 19:55:46,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:55:46,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:55:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:55:46,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:55:46,182 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 25 [2021-10-15 19:55:46,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:55:46,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:55:46,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 25 [2021-10-15 19:55:46,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:55:46,267 INFO L129 PetriNetUnfolder]: 3/33 cut-off events. [2021-10-15 19:55:46,267 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-10-15 19:55:46,268 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 33 events. 3/33 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 40 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 79. Up to 14 conditions per place. [2021-10-15 19:55:46,269 INFO L132 encePairwiseOnDemand]: 20/25 looper letters, 16 selfloop transitions, 3 changer transitions 4/31 dead transitions. [2021-10-15 19:55:46,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 31 transitions, 171 flow [2021-10-15 19:55:46,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:55:46,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:55:46,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2021-10-15 19:55:46,271 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2021-10-15 19:55:46,271 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 76 transitions. [2021-10-15 19:55:46,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 76 transitions. [2021-10-15 19:55:46,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:55:46,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 76 transitions. [2021-10-15 19:55:46,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 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 19:55:46,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:55:46,274 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:55:46,275 INFO L186 Difference]: Start difference. First operand has 35 places, 26 transitions, 115 flow. Second operand 6 states and 76 transitions. [2021-10-15 19:55:46,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 31 transitions, 171 flow [2021-10-15 19:55:46,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 167 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:55:46,279 INFO L242 Difference]: Finished difference. Result has 40 places, 25 transitions, 117 flow [2021-10-15 19:55:46,279 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2021-10-15 19:55:46,280 INFO L334 CegarLoopForPetriNet]: 16 programPoint places, 24 predicate places. [2021-10-15 19:55:46,280 INFO L470 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 117 flow [2021-10-15 19:55:46,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:55:46,280 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:55:46,281 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2021-10-15 19:55:46,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:55:46,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:46,496 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:55:46,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:55:46,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1778536670, now seen corresponding path program 2 times [2021-10-15 19:55:46,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:55:46,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609974692] [2021-10-15 19:55:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:46,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:55:46,520 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:55:46,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312316529] [2021-10-15 19:55:46,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:55:46,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:46,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:55:46,523 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:55:46,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-15 19:55:46,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 19:55:46,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:55:46,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:55:46,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:55:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:55:46,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:55:46,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609974692] [2021-10-15 19:55:46,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-15 19:55:46,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312316529] [2021-10-15 19:55:46,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312316529] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:55:46,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:55:46,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-15 19:55:46,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220337002] [2021-10-15 19:55:46,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:55:46,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:55:46,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:55:46,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:55:46,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 25 [2021-10-15 19:55:46,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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 19:55:46,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:55:46,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 25 [2021-10-15 19:55:46,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:55:46,938 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-10-15 19:55:46,939 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-10-15 19:55:46,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 20 events. 0/20 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 19:55:46,939 INFO L132 encePairwiseOnDemand]: 21/25 looper letters, 3 selfloop transitions, 5 changer transitions 1/19 dead transitions. [2021-10-15 19:55:46,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 19 transitions, 104 flow [2021-10-15 19:55:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:55:46,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:55:46,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2021-10-15 19:55:46,944 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7 [2021-10-15 19:55:46,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 105 transitions. [2021-10-15 19:55:46,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 105 transitions. [2021-10-15 19:55:46,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:55:46,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 105 transitions. [2021-10-15 19:55:46,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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 19:55:46,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:55:46,950 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:55:46,950 INFO L186 Difference]: Start difference. First operand has 40 places, 25 transitions, 117 flow. Second operand 6 states and 105 transitions. [2021-10-15 19:55:46,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 19 transitions, 104 flow [2021-10-15 19:55:46,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 19 transitions, 84 flow, removed 2 selfloop flow, removed 10 redundant places. [2021-10-15 19:55:46,956 INFO L242 Difference]: Finished difference. Result has 30 places, 18 transitions, 74 flow [2021-10-15 19:55:46,956 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=74, PETRI_PLACES=30, PETRI_TRANSITIONS=18} [2021-10-15 19:55:46,956 INFO L334 CegarLoopForPetriNet]: 16 programPoint places, 14 predicate places. [2021-10-15 19:55:46,957 INFO L470 AbstractCegarLoop]: Abstraction has has 30 places, 18 transitions, 74 flow [2021-10-15 19:55:46,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 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 19:55:46,957 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:55:46,957 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-15 19:55:46,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-15 19:55:47,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:47,172 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:55:47,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:55:47,173 INFO L82 PathProgramCache]: Analyzing trace with hash 699894435, now seen corresponding path program 2 times [2021-10-15 19:55:47,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:55:47,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840854372] [2021-10-15 19:55:47,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:55:47,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:55:47,188 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-15 19:55:47,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003030153] [2021-10-15 19:55:47,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:55:47,189 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:47,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:55:47,190 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:55:47,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-15 19:55:47,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 19:55:47,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-15 19:55:47,309 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:55:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:55:47,353 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:55:47,353 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:55:47,355 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:55:47,357 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:55:47,358 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:55:47,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-15 19:55:47,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:55:47,568 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:55:47,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:55:47 BoogieIcfgContainer [2021-10-15 19:55:47,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:55:47,614 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:55:47,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:55:47,615 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:55:47,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:55:43" (3/4) ... [2021-10-15 19:55:47,618 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 19:55:47,697 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:55:47,698 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:55:47,700 INFO L168 Benchmark]: Toolchain (without parser) took 5265.11 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 64.9 MB in the beginning and 63.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:55:47,701 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 96.5 MB. Free memory is still 52.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:55:47,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.15 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 64.7 MB in the beginning and 105.3 MB in the end (delta: -40.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:55:47,702 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.89 ms. Allocated memory is still 130.0 MB. Free memory was 105.3 MB in the beginning and 104.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:55:47,703 INFO L168 Benchmark]: Boogie Preprocessor took 24.85 ms. Allocated memory is still 130.0 MB. Free memory was 104.0 MB in the beginning and 102.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:55:47,703 INFO L168 Benchmark]: RCFGBuilder took 467.62 ms. Allocated memory is still 130.0 MB. Free memory was 102.8 MB in the beginning and 93.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:55:47,704 INFO L168 Benchmark]: TraceAbstraction took 4269.20 ms. Allocated memory is still 130.0 MB. Free memory was 92.7 MB in the beginning and 65.2 MB in the end (delta: 27.5 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:55:47,705 INFO L168 Benchmark]: Witness Printer took 83.47 ms. Allocated memory is still 130.0 MB. Free memory was 65.2 MB in the beginning and 63.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:55:47,708 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 96.5 MB. Free memory is still 52.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 361.15 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 64.7 MB in the beginning and 105.3 MB in the end (delta: -40.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.89 ms. Allocated memory is still 130.0 MB. Free memory was 105.3 MB in the beginning and 104.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.85 ms. Allocated memory is still 130.0 MB. Free memory was 104.0 MB in the beginning and 102.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 467.62 ms. Allocated memory is still 130.0 MB. Free memory was 102.8 MB in the beginning and 93.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4269.20 ms. Allocated memory is still 130.0 MB. Free memory was 92.7 MB in the beginning and 65.2 MB in the end (delta: 27.5 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. * Witness Printer took 83.47 ms. Allocated memory is still 130.0 MB. Free memory was 65.2 MB in the beginning and 63.1 MB in the end (delta: 2.1 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 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L23] y = 0 [L24] x = 0 [L25] c = 0 VAL [counter=0] [L27] EXPR counter++ VAL [counter=1] [L27] COND TRUE counter++<2 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=1] [L27] EXPR counter++ VAL [counter=2] [L27] COND TRUE counter++<2 [L10] COND FALSE !(!(cond)) VAL [counter=2] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=2] [L27] EXPR counter++ VAL [counter=3] [L27] COND FALSE !(counter++<2) [L10] COND TRUE !(cond) VAL [counter=3] [L12] reach_error() VAL [counter=3] - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 8.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4084.9ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 0.0ms, AutomataDifference: 608.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 76.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 23 SDslu, 37 SDs, 0 SdLazy, 117 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 187.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 200.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=2, InterpolantAutomatonStates: 30, 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: 63.0ms SsaConstructionTime, 296.0ms SatisfiabilityAnalysisTime, 866.5ms InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 214 SizeOfPredicates, 13 NumberOfNonLiveVariables, 366 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/19 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-15 19:55:47,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1df00cda-eb7f-4bb5-bf26-07ea783d5553/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...