./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN --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 dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:30:47,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:30:47,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:30:47,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:30:47,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:30:47,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:30:47,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:30:47,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:30:47,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:30:47,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:30:47,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:30:47,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:30:47,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:30:47,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:30:47,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:30:47,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:30:47,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:30:47,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:30:47,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:30:47,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:30:47,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:30:47,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:30:47,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:30:47,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:30:47,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:30:47,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:30:47,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:30:47,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:30:47,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:30:47,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:30:47,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:30:47,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:30:47,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:30:47,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:30:47,967 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:30:47,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:30:47,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:30:47,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:30:47,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:30:47,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:30:47,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:30:47,972 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:30:48,010 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:30:48,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:30:48,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:30:48,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:30:48,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:30:48,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:30:48,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:30:48,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:30:48,015 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:30:48,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:30:48,016 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:30:48,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:30:48,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:30:48,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:30:48,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:30:48,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:30:48,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:30:48,017 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:30:48,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:30:48,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:30:48,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:30:48,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:30:48,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:30:48,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:30:48,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:48,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:30:48,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:30:48,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:30:48,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:30:48,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:30:48,020 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:30:48,020 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:30:48,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:30:48,021 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_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2022-11-20 10:30:48,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:30:48,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:30:48,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:30:48,369 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:30:48,370 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:30:48,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-20 10:30:51,529 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:30:51,832 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:30:51,834 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-11-20 10:30:51,867 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/data/047bf344d/20293a8d6c6f438d80ea99b20fcb6754/FLAG8f51a13f5 [2022-11-20 10:30:51,888 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/data/047bf344d/20293a8d6c6f438d80ea99b20fcb6754 [2022-11-20 10:30:51,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:30:51,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:30:51,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:51,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:30:51,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:30:51,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:51" (1/1) ... [2022-11-20 10:30:51,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a51079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:51, skipping insertion in model container [2022-11-20 10:30:51,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:51" (1/1) ... [2022-11-20 10:30:51,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:30:51,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:52,480 WARN L237 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_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-20 10:30:52,499 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:52,500 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:52,500 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:52,501 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:52,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:52,579 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:30:52,634 WARN L237 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_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/sv-benchmarks/c/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-11-20 10:30:52,640 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:52,640 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:52,642 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:52,643 WARN L1569 CHandler]: Possible shadowing of function new [2022-11-20 10:30:52,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:52,742 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:30:52,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:52 WrapperNode [2022-11-20 10:30:52,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:52,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:52,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:30:52,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:30:52,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:52" (1/1) ... [2022-11-20 10:30:52,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:52" (1/1) ... [2022-11-20 10:30:52,817 INFO L138 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 221 [2022-11-20 10:30:52,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:52,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:30:52,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:30:52,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:30:52,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:52" (1/1) ... [2022-11-20 10:30:52,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:52" (1/1) ... [2022-11-20 10:30:52,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:52" (1/1) ... [2022-11-20 10:30:52,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:52" (1/1) ... [2022-11-20 10:30:52,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:52" (1/1) ... [2022-11-20 10:30:52,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:52" (1/1) ... [2022-11-20 10:30:52,854 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:52" (1/1) ... [2022-11-20 10:30:52,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:52" (1/1) ... [2022-11-20 10:30:52,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:30:52,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:30:52,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:30:52,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:30:52,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:52" (1/1) ... [2022-11-20 10:30:52,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:52,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:52,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:52,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:30:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:30:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:30:52,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:30:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:30:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:30:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:30:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:30:52,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:30:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:30:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 10:30:52,959 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 10:30:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:30:52,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:30:52,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:30:52,961 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:30:53,182 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:30:53,184 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:30:53,721 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:30:53,734 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:30:53,734 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-20 10:30:53,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:53 BoogieIcfgContainer [2022-11-20 10:30:53,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:30:53,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:30:53,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:30:53,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:30:53,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:30:51" (1/3) ... [2022-11-20 10:30:53,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6406c363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:53, skipping insertion in model container [2022-11-20 10:30:53,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:52" (2/3) ... [2022-11-20 10:30:53,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6406c363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:53, skipping insertion in model container [2022-11-20 10:30:53,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:53" (3/3) ... [2022-11-20 10:30:53,753 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2022-11-20 10:30:53,766 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:30:53,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:30:53,776 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:30:53,776 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:30:53,913 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 10:30:53,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 253 transitions, 514 flow [2022-11-20 10:30:54,097 INFO L130 PetriNetUnfolder]: 28/270 cut-off events. [2022-11-20 10:30:54,098 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-11-20 10:30:54,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 270 events. 28/270 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 405 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 152. Up to 4 conditions per place. [2022-11-20 10:30:54,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 253 transitions, 514 flow [2022-11-20 10:30:54,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 248 transitions, 501 flow [2022-11-20 10:30:54,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:30:54,128 INFO L357 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, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5f2899e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:30:54,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 10:30:54,172 INFO L130 PetriNetUnfolder]: 10/179 cut-off events. [2022-11-20 10:30:54,173 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:30:54,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:54,174 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:54,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:54,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:54,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1618434674, now seen corresponding path program 1 times [2022-11-20 10:30:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:54,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029738232] [2022-11-20 10:30:54,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:54,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:30:54,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:54,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029738232] [2022-11-20 10:30:54,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029738232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:54,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:54,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:30:54,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835957333] [2022-11-20 10:30:54,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:54,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:30:54,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:54,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:30:54,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:30:54,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 253 [2022-11-20 10:30:54,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 248 transitions, 501 flow. Second operand has 2 states, 2 states have (on average 231.0) internal successors, (462), 2 states have internal predecessors, (462), 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) [2022-11-20 10:30:54,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:54,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 253 [2022-11-20 10:30:54,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:54,742 INFO L130 PetriNetUnfolder]: 5/242 cut-off events. [2022-11-20 10:30:54,742 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 10:30:54,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 242 events. 5/242 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 269 event pairs, 0 based on Foata normal form. 22/251 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2022-11-20 10:30:54,747 INFO L137 encePairwiseOnDemand]: 233/253 looper letters, 1 selfloop transitions, 0 changer transitions 2/227 dead transitions. [2022-11-20 10:30:54,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 227 transitions, 461 flow [2022-11-20 10:30:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:30:54,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 10:30:54,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 481 transitions. [2022-11-20 10:30:54,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.950592885375494 [2022-11-20 10:30:54,769 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 481 transitions. [2022-11-20 10:30:54,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 481 transitions. [2022-11-20 10:30:54,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:54,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 481 transitions. [2022-11-20 10:30:54,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 240.5) internal successors, (481), 2 states have internal predecessors, (481), 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) [2022-11-20 10:30:54,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 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) [2022-11-20 10:30:54,819 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 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) [2022-11-20 10:30:54,821 INFO L175 Difference]: Start difference. First operand has 226 places, 248 transitions, 501 flow. Second operand 2 states and 481 transitions. [2022-11-20 10:30:54,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 227 transitions, 461 flow [2022-11-20 10:30:54,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 227 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:30:54,839 INFO L231 Difference]: Finished difference. Result has 226 places, 225 transitions, 455 flow [2022-11-20 10:30:54,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=455, PETRI_PLACES=226, PETRI_TRANSITIONS=225} [2022-11-20 10:30:54,847 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 0 predicate places. [2022-11-20 10:30:54,847 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 225 transitions, 455 flow [2022-11-20 10:30:54,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 231.0) internal successors, (462), 2 states have internal predecessors, (462), 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) [2022-11-20 10:30:54,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:54,849 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:54,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:30:54,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:54,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:54,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1010357811, now seen corresponding path program 1 times [2022-11-20 10:30:54,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:54,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329011075] [2022-11-20 10:30:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:54,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:55,076 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:30:55,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:55,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329011075] [2022-11-20 10:30:55,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329011075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:55,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:55,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:55,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917491047] [2022-11-20 10:30:55,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:55,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:55,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:55,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:55,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:55,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 253 [2022-11-20 10:30:55,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 225 transitions, 455 flow. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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) [2022-11-20 10:30:55,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:55,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 253 [2022-11-20 10:30:55,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:55,162 INFO L130 PetriNetUnfolder]: 6/290 cut-off events. [2022-11-20 10:30:55,163 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 10:30:55,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 290 events. 6/290 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 401 event pairs, 0 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 311. Up to 12 conditions per place. [2022-11-20 10:30:55,165 INFO L137 encePairwiseOnDemand]: 250/253 looper letters, 16 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2022-11-20 10:30:55,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 232 transitions, 505 flow [2022-11-20 10:30:55,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:30:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 679 transitions. [2022-11-20 10:30:55,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8945981554677207 [2022-11-20 10:30:55,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 679 transitions. [2022-11-20 10:30:55,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 679 transitions. [2022-11-20 10:30:55,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:55,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 679 transitions. [2022-11-20 10:30:55,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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) [2022-11-20 10:30:55,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-11-20 10:30:55,175 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-11-20 10:30:55,175 INFO L175 Difference]: Start difference. First operand has 226 places, 225 transitions, 455 flow. Second operand 3 states and 679 transitions. [2022-11-20 10:30:55,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 232 transitions, 505 flow [2022-11-20 10:30:55,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 232 transitions, 505 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:30:55,182 INFO L231 Difference]: Finished difference. Result has 227 places, 226 transitions, 467 flow [2022-11-20 10:30:55,182 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=467, PETRI_PLACES=227, PETRI_TRANSITIONS=226} [2022-11-20 10:30:55,183 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 1 predicate places. [2022-11-20 10:30:55,183 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 226 transitions, 467 flow [2022-11-20 10:30:55,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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) [2022-11-20 10:30:55,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:55,185 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:55,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:30:55,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:55,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:55,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1795324933, now seen corresponding path program 1 times [2022-11-20 10:30:55,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:55,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060094967] [2022-11-20 10:30:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:55,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:30:55,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:55,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060094967] [2022-11-20 10:30:55,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060094967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:55,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:55,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:30:55,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131873335] [2022-11-20 10:30:55,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:55,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:30:55,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:55,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:30:55,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:30:55,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 253 [2022-11-20 10:30:55,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 226 transitions, 467 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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) [2022-11-20 10:30:55,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:55,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 253 [2022-11-20 10:30:55,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:55,417 INFO L130 PetriNetUnfolder]: 6/362 cut-off events. [2022-11-20 10:30:55,418 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 10:30:55,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 362 events. 6/362 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 545 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 392. Up to 15 conditions per place. [2022-11-20 10:30:55,420 INFO L137 encePairwiseOnDemand]: 250/253 looper letters, 10 selfloop transitions, 2 changer transitions 0/230 dead transitions. [2022-11-20 10:30:55,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 230 transitions, 499 flow [2022-11-20 10:30:55,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:30:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-20 10:30:55,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-11-20 10:30:55,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8985507246376812 [2022-11-20 10:30:55,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-11-20 10:30:55,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-11-20 10:30:55,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:55,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-11-20 10:30:55,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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) [2022-11-20 10:30:55,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-11-20 10:30:55,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 253.0) internal successors, (1012), 4 states have internal predecessors, (1012), 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) [2022-11-20 10:30:55,430 INFO L175 Difference]: Start difference. First operand has 227 places, 226 transitions, 467 flow. Second operand 3 states and 682 transitions. [2022-11-20 10:30:55,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 230 transitions, 499 flow [2022-11-20 10:30:55,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 230 transitions, 497 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:30:55,435 INFO L231 Difference]: Finished difference. Result has 229 places, 227 transitions, 477 flow [2022-11-20 10:30:55,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=477, PETRI_PLACES=229, PETRI_TRANSITIONS=227} [2022-11-20 10:30:55,438 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 3 predicate places. [2022-11-20 10:30:55,438 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 227 transitions, 477 flow [2022-11-20 10:30:55,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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) [2022-11-20 10:30:55,441 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:55,441 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:55,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:30:55,441 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:55,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:55,443 INFO L85 PathProgramCache]: Analyzing trace with hash 165065027, now seen corresponding path program 1 times [2022-11-20 10:30:55,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:55,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57722474] [2022-11-20 10:30:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:55,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:55,496 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:55,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967834913] [2022-11-20 10:30:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:55,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:55,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:55,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:55,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:30:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:55,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:30:55,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:30:55,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:30:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:30:56,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:56,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57722474] [2022-11-20 10:30:56,054 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:56,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967834913] [2022-11-20 10:30:56,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967834913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:30:56,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:30:56,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 10:30:56,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449121227] [2022-11-20 10:30:56,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:30:56,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:30:56,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:56,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:30:56,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:30:56,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 253 [2022-11-20 10:30:56,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 227 transitions, 477 flow. Second operand has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 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) [2022-11-20 10:30:56,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:56,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 253 [2022-11-20 10:30:56,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:56,238 INFO L130 PetriNetUnfolder]: 6/440 cut-off events. [2022-11-20 10:30:56,238 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-20 10:30:56,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 440 events. 6/440 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 478 event pairs, 0 based on Foata normal form. 4/435 useless extension candidates. Maximal degree in co-relation 497. Up to 10 conditions per place. [2022-11-20 10:30:56,240 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 11 selfloop transitions, 9 changer transitions 0/237 dead transitions. [2022-11-20 10:30:56,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 237 transitions, 539 flow [2022-11-20 10:30:56,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:30:56,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:30:56,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2020 transitions. [2022-11-20 10:30:56,245 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8871321914800175 [2022-11-20 10:30:56,246 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2020 transitions. [2022-11-20 10:30:56,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2020 transitions. [2022-11-20 10:30:56,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:56,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2020 transitions. [2022-11-20 10:30:56,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 224.44444444444446) internal successors, (2020), 9 states have internal predecessors, (2020), 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) [2022-11-20 10:30:56,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 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) [2022-11-20 10:30:56,264 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 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) [2022-11-20 10:30:56,265 INFO L175 Difference]: Start difference. First operand has 229 places, 227 transitions, 477 flow. Second operand 9 states and 2020 transitions. [2022-11-20 10:30:56,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 237 transitions, 539 flow [2022-11-20 10:30:56,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 237 transitions, 537 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:30:56,271 INFO L231 Difference]: Finished difference. Result has 239 places, 233 transitions, 525 flow [2022-11-20 10:30:56,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=525, PETRI_PLACES=239, PETRI_TRANSITIONS=233} [2022-11-20 10:30:56,272 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 13 predicate places. [2022-11-20 10:30:56,272 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 233 transitions, 525 flow [2022-11-20 10:30:56,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 224.0) internal successors, (1792), 8 states have internal predecessors, (1792), 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) [2022-11-20 10:30:56,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:56,274 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:56,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:56,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:56,481 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:56,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:56,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1787124669, now seen corresponding path program 2 times [2022-11-20 10:30:56,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:56,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753244896] [2022-11-20 10:30:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:56,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:56,541 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:56,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1374798278] [2022-11-20 10:30:56,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:30:56,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:56,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:56,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:56,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:30:56,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:30:56,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:30:56,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:30:56,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:57,098 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 114 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:30:57,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:30:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 114 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:30:57,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:57,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753244896] [2022-11-20 10:30:57,394 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:57,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374798278] [2022-11-20 10:30:57,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374798278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:30:57,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:30:57,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 10:30:57,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925877850] [2022-11-20 10:30:57,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:30:57,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:30:57,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:57,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:30:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:30:57,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 253 [2022-11-20 10:30:57,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 233 transitions, 525 flow. Second operand has 16 states, 16 states have (on average 224.25) internal successors, (3588), 16 states have internal predecessors, (3588), 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) [2022-11-20 10:30:57,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:57,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 253 [2022-11-20 10:30:57,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:57,822 INFO L130 PetriNetUnfolder]: 6/736 cut-off events. [2022-11-20 10:30:57,822 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-11-20 10:30:57,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 736 events. 6/736 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 478 event pairs, 0 based on Foata normal form. 8/735 useless extension candidates. Maximal degree in co-relation 927. Up to 22 conditions per place. [2022-11-20 10:30:57,825 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 19 selfloop transitions, 21 changer transitions 0/257 dead transitions. [2022-11-20 10:30:57,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 257 transitions, 713 flow [2022-11-20 10:30:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:30:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 10:30:57,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4706 transitions. [2022-11-20 10:30:57,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8857519292301901 [2022-11-20 10:30:57,835 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4706 transitions. [2022-11-20 10:30:57,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4706 transitions. [2022-11-20 10:30:57,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:57,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4706 transitions. [2022-11-20 10:30:57,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 224.0952380952381) internal successors, (4706), 21 states have internal predecessors, (4706), 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) [2022-11-20 10:30:57,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 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) [2022-11-20 10:30:57,860 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 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) [2022-11-20 10:30:57,860 INFO L175 Difference]: Start difference. First operand has 239 places, 233 transitions, 525 flow. Second operand 21 states and 4706 transitions. [2022-11-20 10:30:57,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 257 transitions, 713 flow [2022-11-20 10:30:57,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 257 transitions, 699 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-20 10:30:57,868 INFO L231 Difference]: Finished difference. Result has 263 places, 246 transitions, 649 flow [2022-11-20 10:30:57,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=649, PETRI_PLACES=263, PETRI_TRANSITIONS=246} [2022-11-20 10:30:57,870 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 37 predicate places. [2022-11-20 10:30:57,870 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 246 transitions, 649 flow [2022-11-20 10:30:57,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 224.25) internal successors, (3588), 16 states have internal predecessors, (3588), 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) [2022-11-20 10:30:57,872 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:57,872 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:57,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:58,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:58,079 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:58,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:58,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2129611331, now seen corresponding path program 3 times [2022-11-20 10:30:58,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:58,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915497150] [2022-11-20 10:30:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:58,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:58,154 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:58,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149602723] [2022-11-20 10:30:58,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:30:58,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:58,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:58,156 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:58,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:30:58,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 10:30:58,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:30:58,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 10:30:58,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-11-20 10:30:58,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:30:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2022-11-20 10:30:59,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:59,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915497150] [2022-11-20 10:30:59,310 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:59,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149602723] [2022-11-20 10:30:59,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149602723] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:30:59,311 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:30:59,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 10:30:59,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659746098] [2022-11-20 10:30:59,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:30:59,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:30:59,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:59,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:30:59,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:30:59,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-11-20 10:30:59,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 246 transitions, 649 flow. Second operand has 8 states, 8 states have (on average 221.75) internal successors, (1774), 8 states have internal predecessors, (1774), 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) [2022-11-20 10:30:59,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:30:59,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-11-20 10:30:59,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:30:59,711 INFO L130 PetriNetUnfolder]: 7/1012 cut-off events. [2022-11-20 10:30:59,711 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-11-20 10:30:59,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 1012 events. 7/1012 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 164 event pairs, 0 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 1334. Up to 33 conditions per place. [2022-11-20 10:30:59,716 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 20 selfloop transitions, 9 changer transitions 0/262 dead transitions. [2022-11-20 10:30:59,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 262 transitions, 741 flow [2022-11-20 10:30:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:30:59,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:30:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2002 transitions. [2022-11-20 10:30:59,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8792270531400966 [2022-11-20 10:30:59,721 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2002 transitions. [2022-11-20 10:30:59,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2002 transitions. [2022-11-20 10:30:59,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:30:59,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2002 transitions. [2022-11-20 10:30:59,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.44444444444446) internal successors, (2002), 9 states have internal predecessors, (2002), 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) [2022-11-20 10:30:59,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 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) [2022-11-20 10:30:59,734 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 253.0) internal successors, (2530), 10 states have internal predecessors, (2530), 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) [2022-11-20 10:30:59,734 INFO L175 Difference]: Start difference. First operand has 263 places, 246 transitions, 649 flow. Second operand 9 states and 2002 transitions. [2022-11-20 10:30:59,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 262 transitions, 741 flow [2022-11-20 10:30:59,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 262 transitions, 717 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-20 10:30:59,744 INFO L231 Difference]: Finished difference. Result has 268 places, 252 transitions, 675 flow [2022-11-20 10:30:59,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=675, PETRI_PLACES=268, PETRI_TRANSITIONS=252} [2022-11-20 10:30:59,748 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 42 predicate places. [2022-11-20 10:30:59,748 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 252 transitions, 675 flow [2022-11-20 10:30:59,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 221.75) internal successors, (1774), 8 states have internal predecessors, (1774), 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) [2022-11-20 10:30:59,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:30:59,751 INFO L209 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:59,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 10:30:59,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 10:30:59,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:59,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:59,957 INFO L85 PathProgramCache]: Analyzing trace with hash -430905277, now seen corresponding path program 4 times [2022-11-20 10:30:59,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:59,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914390307] [2022-11-20 10:30:59,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:59,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:00,173 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:31:00,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [854889959] [2022-11-20 10:31:00,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 10:31:00,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:31:00,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:31:00,176 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:31:00,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:31:01,191 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 10:31:01,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:31:01,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 3473 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:31:01,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:31:02,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7883 backedges. 0 proven. 5526 refuted. 0 times theorem prover too weak. 2357 trivial. 0 not checked. [2022-11-20 10:31:02,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:31:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7883 backedges. 0 proven. 5526 refuted. 0 times theorem prover too weak. 2357 trivial. 0 not checked. [2022-11-20 10:31:03,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:31:03,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914390307] [2022-11-20 10:31:03,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:31:03,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854889959] [2022-11-20 10:31:03,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854889959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:31:03,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:31:03,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 10:31:03,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355153367] [2022-11-20 10:31:03,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:31:03,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:31:03,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:31:03,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:31:03,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:31:03,913 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 253 [2022-11-20 10:31:03,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 252 transitions, 675 flow. Second operand has 16 states, 16 states have (on average 222.375) internal successors, (3558), 16 states have internal predecessors, (3558), 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) [2022-11-20 10:31:03,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:31:03,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 253 [2022-11-20 10:31:03,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:31:05,164 INFO L130 PetriNetUnfolder]: 11/2108 cut-off events. [2022-11-20 10:31:05,165 INFO L131 PetriNetUnfolder]: For 346/346 co-relation queries the response was YES. [2022-11-20 10:31:05,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2823 conditions, 2108 events. 11/2108 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 168 event pairs, 0 based on Foata normal form. 4/2103 useless extension candidates. Maximal degree in co-relation 2806. Up to 70 conditions per place. [2022-11-20 10:31:05,175 INFO L137 encePairwiseOnDemand]: 247/253 looper letters, 40 selfloop transitions, 21 changer transitions 0/294 dead transitions. [2022-11-20 10:31:05,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 294 transitions, 941 flow [2022-11-20 10:31:05,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:31:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 10:31:05,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4664 transitions. [2022-11-20 10:31:05,185 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8778467908902692 [2022-11-20 10:31:05,186 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4664 transitions. [2022-11-20 10:31:05,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4664 transitions. [2022-11-20 10:31:05,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:31:05,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4664 transitions. [2022-11-20 10:31:05,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 222.0952380952381) internal successors, (4664), 21 states have internal predecessors, (4664), 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) [2022-11-20 10:31:05,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 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) [2022-11-20 10:31:05,227 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 253.0) internal successors, (5566), 22 states have internal predecessors, (5566), 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) [2022-11-20 10:31:05,227 INFO L175 Difference]: Start difference. First operand has 268 places, 252 transitions, 675 flow. Second operand 21 states and 4664 transitions. [2022-11-20 10:31:05,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 294 transitions, 941 flow [2022-11-20 10:31:05,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 294 transitions, 927 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-20 10:31:05,241 INFO L231 Difference]: Finished difference. Result has 292 places, 265 transitions, 799 flow [2022-11-20 10:31:05,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=799, PETRI_PLACES=292, PETRI_TRANSITIONS=265} [2022-11-20 10:31:05,242 INFO L288 CegarLoopForPetriNet]: 226 programPoint places, 66 predicate places. [2022-11-20 10:31:05,242 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 265 transitions, 799 flow [2022-11-20 10:31:05,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 222.375) internal successors, (3558), 16 states have internal predecessors, (3558), 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) [2022-11-20 10:31:05,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:31:05,245 INFO L209 CegarLoopForPetriNet]: trace histogram [49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 49, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:31:05,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:31:05,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:31:05,457 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:31:05,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:31:05,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1522377795, now seen corresponding path program 5 times [2022-11-20 10:31:05,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:31:05,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770142126] [2022-11-20 10:31:05,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:31:05,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:31:05,836 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:31:05,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682501047] [2022-11-20 10:31:05,840 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 10:31:05,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:31:05,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:31:05,846 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:31:05,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6b397c1-d7fe-47e9-a3bb-a73b8b185012/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process