./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro --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 6e0191a7c0154db5e6d5798f5b20e5814ce0ff555e18a7acf1f1e5e323a36576 --- 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-8393723 [2022-11-18 18:30:05,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:30:05,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:30:05,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:30:05,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:30:05,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:30:05,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:30:05,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:30:05,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:30:05,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:30:05,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:30:05,916 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:30:05,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:30:05,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:30:05,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:30:05,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:30:05,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:30:05,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:30:05,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:30:05,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:30:05,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:30:05,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:30:05,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:30:05,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:30:05,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:30:05,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:30:05,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:30:05,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:30:05,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:30:05,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:30:05,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:30:05,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:30:05,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:30:05,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:30:05,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:30:05,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:30:05,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:30:05,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:30:05,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:30:05,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:30:05,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:30:05,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:30:06,005 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:30:06,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:30:06,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:30:06,006 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:30:06,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:30:06,007 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:30:06,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:30:06,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:30:06,008 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:30:06,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:30:06,009 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:30:06,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:30:06,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:30:06,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:30:06,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:30:06,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:30:06,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:30:06,010 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:30:06,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:30:06,011 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:30:06,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:30:06,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:30:06,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:30:06,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:30:06,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:30:06,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:30:06,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:30:06,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:30:06,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:30:06,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:30:06,013 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:30:06,013 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:30:06,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:30:06,014 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_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e0191a7c0154db5e6d5798f5b20e5814ce0ff555e18a7acf1f1e5e323a36576 [2022-11-18 18:30:06,334 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:30:06,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:30:06,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:30:06,367 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:30:06,368 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:30:06,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i [2022-11-18 18:30:06,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/data/0bfc02c0a/7ef9b766e26c4d98aba7f7e76dcd1390/FLAG56cc72335 [2022-11-18 18:30:07,129 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:30:07,137 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i [2022-11-18 18:30:07,150 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/data/0bfc02c0a/7ef9b766e26c4d98aba7f7e76dcd1390/FLAG56cc72335 [2022-11-18 18:30:07,364 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/data/0bfc02c0a/7ef9b766e26c4d98aba7f7e76dcd1390 [2022-11-18 18:30:07,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:30:07,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:30:07,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:30:07,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:30:07,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:30:07,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:30:07" (1/1) ... [2022-11-18 18:30:07,375 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d1fcf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:07, skipping insertion in model container [2022-11-18 18:30:07,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:30:07" (1/1) ... [2022-11-18 18:30:07,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:30:07,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:30:07,637 WARN L234 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_985d1d69-70fc-49a8-8914-39bb2a492abb/sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i[967,980] [2022-11-18 18:30:07,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:30:07,942 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:30:07,956 WARN L234 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_985d1d69-70fc-49a8-8914-39bb2a492abb/sv-benchmarks/c/pthread-wmm/safe030_power.opt_pso.opt_rmo.opt.i[967,980] [2022-11-18 18:30:08,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:30:08,051 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:30:08,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:08 WrapperNode [2022-11-18 18:30:08,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:30:08,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:30:08,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:30:08,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:30:08,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:08" (1/1) ... [2022-11-18 18:30:08,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:08" (1/1) ... [2022-11-18 18:30:08,150 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 141 [2022-11-18 18:30:08,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:30:08,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:30:08,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:30:08,153 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:30:08,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:08" (1/1) ... [2022-11-18 18:30:08,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:08" (1/1) ... [2022-11-18 18:30:08,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:08" (1/1) ... [2022-11-18 18:30:08,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:08" (1/1) ... [2022-11-18 18:30:08,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:08" (1/1) ... [2022-11-18 18:30:08,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:08" (1/1) ... [2022-11-18 18:30:08,187 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:08" (1/1) ... [2022-11-18 18:30:08,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:08" (1/1) ... [2022-11-18 18:30:08,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:30:08,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:30:08,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:30:08,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:30:08,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:08" (1/1) ... [2022-11-18 18:30:08,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:30:08,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:30:08,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:30:08,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:30:08,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:30:08,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:30:08,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:30:08,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:30:08,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:30:08,304 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-18 18:30:08,305 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-18 18:30:08,305 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-18 18:30:08,305 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-18 18:30:08,306 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-18 18:30:08,306 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-18 18:30:08,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:30:08,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:30:08,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:30:08,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:30:08,309 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:30:08,481 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:30:08,483 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:30:08,939 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:30:09,184 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:30:09,184 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:30:09,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:09 BoogieIcfgContainer [2022-11-18 18:30:09,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:30:09,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:30:09,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:30:09,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:30:09,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:30:07" (1/3) ... [2022-11-18 18:30:09,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fea1e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:30:09, skipping insertion in model container [2022-11-18 18:30:09,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:30:08" (2/3) ... [2022-11-18 18:30:09,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fea1e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:30:09, skipping insertion in model container [2022-11-18 18:30:09,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:09" (3/3) ... [2022-11-18 18:30:09,197 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_power.opt_pso.opt_rmo.opt.i [2022-11-18 18:30:09,206 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:30:09,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:30:09,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:30:09,217 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:30:09,281 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 18:30:09,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 112 transitions, 239 flow [2022-11-18 18:30:09,378 INFO L130 PetriNetUnfolder]: 2/109 cut-off events. [2022-11-18 18:30:09,378 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:30:09,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 2/109 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-11-18 18:30:09,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 112 transitions, 239 flow [2022-11-18 18:30:09,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 109 transitions, 227 flow [2022-11-18 18:30:09,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:30:09,433 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;@6ed5c628, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:30:09,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-18 18:30:09,464 INFO L130 PetriNetUnfolder]: 0/70 cut-off events. [2022-11-18 18:30:09,464 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:30:09,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:09,469 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:09,470 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:09,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:09,476 INFO L85 PathProgramCache]: Analyzing trace with hash 26492872, now seen corresponding path program 1 times [2022-11-18 18:30:09,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:09,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717108187] [2022-11-18 18:30:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:09,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:10,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:10,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717108187] [2022-11-18 18:30:10,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717108187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:10,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:10,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:30:10,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247973640] [2022-11-18 18:30:10,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:10,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:30:10,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:10,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:30:10,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:30:10,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 112 [2022-11-18 18:30:10,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 109 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2022-11-18 18:30:10,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:10,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 112 [2022-11-18 18:30:10,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:10,516 INFO L130 PetriNetUnfolder]: 17/241 cut-off events. [2022-11-18 18:30:10,516 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 18:30:10,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 241 events. 17/241 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 748 event pairs, 7 based on Foata normal form. 8/237 useless extension candidates. Maximal degree in co-relation 243. Up to 27 conditions per place. [2022-11-18 18:30:10,521 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 10 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2022-11-18 18:30:10,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 108 transitions, 249 flow [2022-11-18 18:30:10,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:30:10,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:30:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2022-11-18 18:30:10,540 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9345238095238095 [2022-11-18 18:30:10,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2022-11-18 18:30:10,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2022-11-18 18:30:10,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:10,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2022-11-18 18:30:10,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 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) [2022-11-18 18:30:10,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2022-11-18 18:30:10,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 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) [2022-11-18 18:30:10,563 INFO L175 Difference]: Start difference. First operand has 117 places, 109 transitions, 227 flow. Second operand 3 states and 314 transitions. [2022-11-18 18:30:10,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 108 transitions, 249 flow [2022-11-18 18:30:10,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 108 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:30:10,579 INFO L231 Difference]: Finished difference. Result has 114 places, 105 transitions, 220 flow [2022-11-18 18:30:10,582 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=114, PETRI_TRANSITIONS=105} [2022-11-18 18:30:10,590 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, -3 predicate places. [2022-11-18 18:30:10,591 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 105 transitions, 220 flow [2022-11-18 18:30:10,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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) [2022-11-18 18:30:10,592 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:10,592 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:10,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:30:10,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:10,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:10,595 INFO L85 PathProgramCache]: Analyzing trace with hash 907715447, now seen corresponding path program 1 times [2022-11-18 18:30:10,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:10,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088032583] [2022-11-18 18:30:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:10,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:12,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:12,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088032583] [2022-11-18 18:30:12,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088032583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:12,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:12,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:30:12,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463496628] [2022-11-18 18:30:12,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:12,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:30:12,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:12,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:30:12,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:30:12,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 112 [2022-11-18 18:30:12,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 105 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 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) [2022-11-18 18:30:12,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:12,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 112 [2022-11-18 18:30:12,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:13,743 INFO L130 PetriNetUnfolder]: 1603/4419 cut-off events. [2022-11-18 18:30:13,743 INFO L131 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2022-11-18 18:30:13,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7116 conditions, 4419 events. 1603/4419 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 37919 event pairs, 136 based on Foata normal form. 0/4283 useless extension candidates. Maximal degree in co-relation 7058. Up to 999 conditions per place. [2022-11-18 18:30:13,771 INFO L137 encePairwiseOnDemand]: 97/112 looper letters, 38 selfloop transitions, 13 changer transitions 93/210 dead transitions. [2022-11-18 18:30:13,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 210 transitions, 726 flow [2022-11-18 18:30:13,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:30:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 18:30:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1176 transitions. [2022-11-18 18:30:13,777 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8076923076923077 [2022-11-18 18:30:13,777 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1176 transitions. [2022-11-18 18:30:13,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1176 transitions. [2022-11-18 18:30:13,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:13,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1176 transitions. [2022-11-18 18:30:13,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 90.46153846153847) internal successors, (1176), 13 states have internal predecessors, (1176), 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) [2022-11-18 18:30:13,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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) [2022-11-18 18:30:13,787 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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) [2022-11-18 18:30:13,788 INFO L175 Difference]: Start difference. First operand has 114 places, 105 transitions, 220 flow. Second operand 13 states and 1176 transitions. [2022-11-18 18:30:13,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 210 transitions, 726 flow [2022-11-18 18:30:13,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 210 transitions, 700 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:30:13,794 INFO L231 Difference]: Finished difference. Result has 136 places, 103 transitions, 332 flow [2022-11-18 18:30:13,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=332, PETRI_PLACES=136, PETRI_TRANSITIONS=103} [2022-11-18 18:30:13,796 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 19 predicate places. [2022-11-18 18:30:13,796 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 103 transitions, 332 flow [2022-11-18 18:30:13,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 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) [2022-11-18 18:30:13,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:13,797 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:13,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:30:13,797 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:13,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:13,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1840613054, now seen corresponding path program 1 times [2022-11-18 18:30:13,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:13,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339054779] [2022-11-18 18:30:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:13,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:16,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:16,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339054779] [2022-11-18 18:30:16,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339054779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:16,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:16,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 18:30:16,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632801921] [2022-11-18 18:30:16,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:16,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:30:16,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:16,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:30:16,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:30:16,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 112 [2022-11-18 18:30:16,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 103 transitions, 332 flow. Second operand has 13 states, 13 states have (on average 81.53846153846153) internal successors, (1060), 13 states have internal predecessors, (1060), 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) [2022-11-18 18:30:16,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:16,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 112 [2022-11-18 18:30:16,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:17,747 INFO L130 PetriNetUnfolder]: 1182/2502 cut-off events. [2022-11-18 18:30:17,748 INFO L131 PetriNetUnfolder]: For 5527/10279 co-relation queries the response was YES. [2022-11-18 18:30:17,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8585 conditions, 2502 events. 1182/2502 cut-off events. For 5527/10279 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 16700 event pairs, 19 based on Foata normal form. 58/2475 useless extension candidates. Maximal degree in co-relation 8511. Up to 779 conditions per place. [2022-11-18 18:30:17,774 INFO L137 encePairwiseOnDemand]: 92/112 looper letters, 52 selfloop transitions, 27 changer transitions 96/241 dead transitions. [2022-11-18 18:30:17,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 241 transitions, 1602 flow [2022-11-18 18:30:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:30:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 18:30:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1980 transitions. [2022-11-18 18:30:17,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7686335403726708 [2022-11-18 18:30:17,780 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1980 transitions. [2022-11-18 18:30:17,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1980 transitions. [2022-11-18 18:30:17,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:17,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1980 transitions. [2022-11-18 18:30:17,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 86.08695652173913) internal successors, (1980), 23 states have internal predecessors, (1980), 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) [2022-11-18 18:30:17,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 112.0) internal successors, (2688), 24 states have internal predecessors, (2688), 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) [2022-11-18 18:30:17,794 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 112.0) internal successors, (2688), 24 states have internal predecessors, (2688), 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) [2022-11-18 18:30:17,794 INFO L175 Difference]: Start difference. First operand has 136 places, 103 transitions, 332 flow. Second operand 23 states and 1980 transitions. [2022-11-18 18:30:17,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 241 transitions, 1602 flow [2022-11-18 18:30:17,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 241 transitions, 1562 flow, removed 20 selfloop flow, removed 3 redundant places. [2022-11-18 18:30:17,824 INFO L231 Difference]: Finished difference. Result has 151 places, 119 transitions, 628 flow [2022-11-18 18:30:17,824 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=628, PETRI_PLACES=151, PETRI_TRANSITIONS=119} [2022-11-18 18:30:17,826 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 34 predicate places. [2022-11-18 18:30:17,827 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 119 transitions, 628 flow [2022-11-18 18:30:17,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 81.53846153846153) internal successors, (1060), 13 states have internal predecessors, (1060), 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) [2022-11-18 18:30:17,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:17,830 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:17,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:30:17,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:17,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:17,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1583847247, now seen corresponding path program 1 times [2022-11-18 18:30:17,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:17,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763031615] [2022-11-18 18:30:17,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:17,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:19,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:19,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763031615] [2022-11-18 18:30:19,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763031615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:19,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:19,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:19,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803702073] [2022-11-18 18:30:19,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:19,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:19,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:19,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:19,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:19,253 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 112 [2022-11-18 18:30:19,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 119 transitions, 628 flow. Second operand has 11 states, 11 states have (on average 81.9090909090909) internal successors, (901), 11 states have internal predecessors, (901), 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) [2022-11-18 18:30:19,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:19,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 112 [2022-11-18 18:30:19,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:20,865 INFO L130 PetriNetUnfolder]: 1197/2424 cut-off events. [2022-11-18 18:30:20,865 INFO L131 PetriNetUnfolder]: For 18655/36138 co-relation queries the response was YES. [2022-11-18 18:30:20,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12649 conditions, 2424 events. 1197/2424 cut-off events. For 18655/36138 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15066 event pairs, 11 based on Foata normal form. 61/2393 useless extension candidates. Maximal degree in co-relation 12552. Up to 782 conditions per place. [2022-11-18 18:30:20,899 INFO L137 encePairwiseOnDemand]: 95/112 looper letters, 70 selfloop transitions, 57 changer transitions 92/285 dead transitions. [2022-11-18 18:30:20,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 285 transitions, 2866 flow [2022-11-18 18:30:20,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:30:20,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:30:20,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1590 transitions. [2022-11-18 18:30:20,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7886904761904762 [2022-11-18 18:30:20,905 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1590 transitions. [2022-11-18 18:30:20,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1590 transitions. [2022-11-18 18:30:20,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:20,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1590 transitions. [2022-11-18 18:30:20,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 88.33333333333333) internal successors, (1590), 18 states have internal predecessors, (1590), 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) [2022-11-18 18:30:20,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 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) [2022-11-18 18:30:20,919 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 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) [2022-11-18 18:30:20,919 INFO L175 Difference]: Start difference. First operand has 151 places, 119 transitions, 628 flow. Second operand 18 states and 1590 transitions. [2022-11-18 18:30:20,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 285 transitions, 2866 flow [2022-11-18 18:30:20,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 285 transitions, 2820 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-11-18 18:30:20,960 INFO L231 Difference]: Finished difference. Result has 163 places, 162 transitions, 1461 flow [2022-11-18 18:30:20,961 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1461, PETRI_PLACES=163, PETRI_TRANSITIONS=162} [2022-11-18 18:30:20,963 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 46 predicate places. [2022-11-18 18:30:20,967 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 162 transitions, 1461 flow [2022-11-18 18:30:20,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.9090909090909) internal successors, (901), 11 states have internal predecessors, (901), 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) [2022-11-18 18:30:20,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:20,970 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:20,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:30:20,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:20,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:20,971 INFO L85 PathProgramCache]: Analyzing trace with hash 232501492, now seen corresponding path program 1 times [2022-11-18 18:30:20,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:20,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307470229] [2022-11-18 18:30:20,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:20,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:21,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:21,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:21,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307470229] [2022-11-18 18:30:21,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307470229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:21,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:21,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:30:21,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484030225] [2022-11-18 18:30:21,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:21,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:30:21,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:21,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:30:21,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:30:21,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 112 [2022-11-18 18:30:21,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 162 transitions, 1461 flow. Second operand has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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) [2022-11-18 18:30:21,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:21,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 112 [2022-11-18 18:30:21,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:23,059 INFO L130 PetriNetUnfolder]: 1044/2180 cut-off events. [2022-11-18 18:30:23,059 INFO L131 PetriNetUnfolder]: For 30941/68148 co-relation queries the response was YES. [2022-11-18 18:30:23,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14290 conditions, 2180 events. 1044/2180 cut-off events. For 30941/68148 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13487 event pairs, 27 based on Foata normal form. 57/2146 useless extension candidates. Maximal degree in co-relation 14179. Up to 816 conditions per place. [2022-11-18 18:30:23,099 INFO L137 encePairwiseOnDemand]: 99/112 looper letters, 84 selfloop transitions, 44 changer transitions 73/267 dead transitions. [2022-11-18 18:30:23,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 267 transitions, 3301 flow [2022-11-18 18:30:23,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:30:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 18:30:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1157 transitions. [2022-11-18 18:30:23,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7946428571428571 [2022-11-18 18:30:23,103 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1157 transitions. [2022-11-18 18:30:23,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1157 transitions. [2022-11-18 18:30:23,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:23,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1157 transitions. [2022-11-18 18:30:23,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 89.0) internal successors, (1157), 13 states have internal predecessors, (1157), 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) [2022-11-18 18:30:23,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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) [2022-11-18 18:30:23,112 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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) [2022-11-18 18:30:23,112 INFO L175 Difference]: Start difference. First operand has 163 places, 162 transitions, 1461 flow. Second operand 13 states and 1157 transitions. [2022-11-18 18:30:23,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 267 transitions, 3301 flow [2022-11-18 18:30:23,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 267 transitions, 3084 flow, removed 108 selfloop flow, removed 4 redundant places. [2022-11-18 18:30:23,297 INFO L231 Difference]: Finished difference. Result has 174 places, 176 transitions, 1768 flow [2022-11-18 18:30:23,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1768, PETRI_PLACES=174, PETRI_TRANSITIONS=176} [2022-11-18 18:30:23,299 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 57 predicate places. [2022-11-18 18:30:23,299 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 176 transitions, 1768 flow [2022-11-18 18:30:23,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.0) internal successors, (581), 7 states have internal predecessors, (581), 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) [2022-11-18 18:30:23,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:23,300 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:23,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:30:23,301 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:23,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:23,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1031340676, now seen corresponding path program 1 times [2022-11-18 18:30:23,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:23,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410844522] [2022-11-18 18:30:23,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:23,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:23,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:23,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410844522] [2022-11-18 18:30:23,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410844522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:23,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:23,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:30:23,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401505773] [2022-11-18 18:30:23,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:23,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:30:23,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:23,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:30:23,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:30:23,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 112 [2022-11-18 18:30:23,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 176 transitions, 1768 flow. Second operand has 6 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 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) [2022-11-18 18:30:23,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:23,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 112 [2022-11-18 18:30:23,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:24,330 INFO L130 PetriNetUnfolder]: 780/1818 cut-off events. [2022-11-18 18:30:24,330 INFO L131 PetriNetUnfolder]: For 34510/48509 co-relation queries the response was YES. [2022-11-18 18:30:24,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12844 conditions, 1818 events. 780/1818 cut-off events. For 34510/48509 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11780 event pairs, 68 based on Foata normal form. 393/2129 useless extension candidates. Maximal degree in co-relation 12731. Up to 683 conditions per place. [2022-11-18 18:30:24,377 INFO L137 encePairwiseOnDemand]: 106/112 looper letters, 66 selfloop transitions, 21 changer transitions 43/233 dead transitions. [2022-11-18 18:30:24,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 233 transitions, 3030 flow [2022-11-18 18:30:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:30:24,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 18:30:24,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 870 transitions. [2022-11-18 18:30:24,381 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8630952380952381 [2022-11-18 18:30:24,381 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 870 transitions. [2022-11-18 18:30:24,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 870 transitions. [2022-11-18 18:30:24,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:24,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 870 transitions. [2022-11-18 18:30:24,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 96.66666666666667) internal successors, (870), 9 states have internal predecessors, (870), 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) [2022-11-18 18:30:24,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2022-11-18 18:30:24,387 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 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) [2022-11-18 18:30:24,387 INFO L175 Difference]: Start difference. First operand has 174 places, 176 transitions, 1768 flow. Second operand 9 states and 870 transitions. [2022-11-18 18:30:24,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 233 transitions, 3030 flow [2022-11-18 18:30:24,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 233 transitions, 2934 flow, removed 48 selfloop flow, removed 3 redundant places. [2022-11-18 18:30:24,466 INFO L231 Difference]: Finished difference. Result has 177 places, 174 transitions, 1751 flow [2022-11-18 18:30:24,467 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1751, PETRI_PLACES=177, PETRI_TRANSITIONS=174} [2022-11-18 18:30:24,470 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 60 predicate places. [2022-11-18 18:30:24,470 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 174 transitions, 1751 flow [2022-11-18 18:30:24,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.16666666666667) internal successors, (559), 6 states have internal predecessors, (559), 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) [2022-11-18 18:30:24,471 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:24,471 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:24,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:30:24,471 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:24,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:24,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1343964093, now seen corresponding path program 1 times [2022-11-18 18:30:24,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:24,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747840706] [2022-11-18 18:30:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:24,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:25,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:25,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747840706] [2022-11-18 18:30:25,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747840706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:25,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:25,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:30:25,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501961930] [2022-11-18 18:30:25,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:25,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:30:25,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:25,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:30:25,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:30:25,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 112 [2022-11-18 18:30:25,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 174 transitions, 1751 flow. Second operand has 9 states, 9 states have (on average 91.55555555555556) internal successors, (824), 9 states have internal predecessors, (824), 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) [2022-11-18 18:30:25,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:25,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 112 [2022-11-18 18:30:25,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:25,940 INFO L130 PetriNetUnfolder]: 674/1586 cut-off events. [2022-11-18 18:30:25,940 INFO L131 PetriNetUnfolder]: For 29301/55136 co-relation queries the response was YES. [2022-11-18 18:30:25,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10853 conditions, 1586 events. 674/1586 cut-off events. For 29301/55136 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10055 event pairs, 41 based on Foata normal form. 371/1851 useless extension candidates. Maximal degree in co-relation 10788. Up to 652 conditions per place. [2022-11-18 18:30:25,973 INFO L137 encePairwiseOnDemand]: 104/112 looper letters, 37 selfloop transitions, 12 changer transitions 40/217 dead transitions. [2022-11-18 18:30:25,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 217 transitions, 2697 flow [2022-11-18 18:30:25,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:30:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:30:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1034 transitions. [2022-11-18 18:30:25,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-11-18 18:30:25,977 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1034 transitions. [2022-11-18 18:30:25,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1034 transitions. [2022-11-18 18:30:25,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:25,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1034 transitions. [2022-11-18 18:30:25,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 94.0) internal successors, (1034), 11 states have internal predecessors, (1034), 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) [2022-11-18 18:30:25,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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) [2022-11-18 18:30:25,985 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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) [2022-11-18 18:30:25,985 INFO L175 Difference]: Start difference. First operand has 177 places, 174 transitions, 1751 flow. Second operand 11 states and 1034 transitions. [2022-11-18 18:30:25,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 217 transitions, 2697 flow [2022-11-18 18:30:26,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 217 transitions, 2573 flow, removed 48 selfloop flow, removed 17 redundant places. [2022-11-18 18:30:26,049 INFO L231 Difference]: Finished difference. Result has 171 places, 172 transitions, 1667 flow [2022-11-18 18:30:26,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1667, PETRI_PLACES=171, PETRI_TRANSITIONS=172} [2022-11-18 18:30:26,051 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 54 predicate places. [2022-11-18 18:30:26,051 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 172 transitions, 1667 flow [2022-11-18 18:30:26,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 91.55555555555556) internal successors, (824), 9 states have internal predecessors, (824), 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) [2022-11-18 18:30:26,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:26,052 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:26,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:30:26,052 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:26,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:26,053 INFO L85 PathProgramCache]: Analyzing trace with hash -843644016, now seen corresponding path program 1 times [2022-11-18 18:30:26,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:26,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765205461] [2022-11-18 18:30:26,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:26,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:26,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:26,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:26,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765205461] [2022-11-18 18:30:26,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765205461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:26,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:26,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:30:26,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297461028] [2022-11-18 18:30:26,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:26,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:30:26,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:26,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:30:26,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:30:26,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 112 [2022-11-18 18:30:26,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 172 transitions, 1667 flow. Second operand has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 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) [2022-11-18 18:30:26,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:26,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 112 [2022-11-18 18:30:26,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:28,021 INFO L130 PetriNetUnfolder]: 1018/2421 cut-off events. [2022-11-18 18:30:28,021 INFO L131 PetriNetUnfolder]: For 38506/82422 co-relation queries the response was YES. [2022-11-18 18:30:28,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16295 conditions, 2421 events. 1018/2421 cut-off events. For 38506/82422 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17153 event pairs, 109 based on Foata normal form. 58/2375 useless extension candidates. Maximal degree in co-relation 16176. Up to 764 conditions per place. [2022-11-18 18:30:28,055 INFO L137 encePairwiseOnDemand]: 97/112 looper letters, 89 selfloop transitions, 35 changer transitions 70/260 dead transitions. [2022-11-18 18:30:28,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 260 transitions, 3420 flow [2022-11-18 18:30:28,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:30:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 18:30:28,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1141 transitions. [2022-11-18 18:30:28,059 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7836538461538461 [2022-11-18 18:30:28,059 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1141 transitions. [2022-11-18 18:30:28,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1141 transitions. [2022-11-18 18:30:28,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:28,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1141 transitions. [2022-11-18 18:30:28,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.76923076923077) internal successors, (1141), 13 states have internal predecessors, (1141), 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) [2022-11-18 18:30:28,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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) [2022-11-18 18:30:28,066 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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) [2022-11-18 18:30:28,067 INFO L175 Difference]: Start difference. First operand has 171 places, 172 transitions, 1667 flow. Second operand 13 states and 1141 transitions. [2022-11-18 18:30:28,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 260 transitions, 3420 flow [2022-11-18 18:30:28,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 260 transitions, 3203 flow, removed 98 selfloop flow, removed 12 redundant places. [2022-11-18 18:30:28,154 INFO L231 Difference]: Finished difference. Result has 177 places, 168 transitions, 1692 flow [2022-11-18 18:30:28,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1692, PETRI_PLACES=177, PETRI_TRANSITIONS=168} [2022-11-18 18:30:28,155 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 60 predicate places. [2022-11-18 18:30:28,155 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 168 transitions, 1692 flow [2022-11-18 18:30:28,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 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) [2022-11-18 18:30:28,156 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:28,156 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:28,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:30:28,156 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:28,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:28,157 INFO L85 PathProgramCache]: Analyzing trace with hash 388145491, now seen corresponding path program 1 times [2022-11-18 18:30:28,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:28,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010244845] [2022-11-18 18:30:28,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:28,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:28,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:28,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010244845] [2022-11-18 18:30:28,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010244845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:28,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:28,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:30:28,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969439655] [2022-11-18 18:30:28,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:28,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:30:28,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:28,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:30:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:30:28,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2022-11-18 18:30:28,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 168 transitions, 1692 flow. Second operand has 9 states, 9 states have (on average 90.66666666666667) internal successors, (816), 9 states have internal predecessors, (816), 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) [2022-11-18 18:30:28,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:28,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2022-11-18 18:30:28,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:29,428 INFO L130 PetriNetUnfolder]: 770/2161 cut-off events. [2022-11-18 18:30:29,428 INFO L131 PetriNetUnfolder]: For 44543/62978 co-relation queries the response was YES. [2022-11-18 18:30:29,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14101 conditions, 2161 events. 770/2161 cut-off events. For 44543/62978 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 17279 event pairs, 140 based on Foata normal form. 488/2529 useless extension candidates. Maximal degree in co-relation 13981. Up to 773 conditions per place. [2022-11-18 18:30:29,454 INFO L137 encePairwiseOnDemand]: 101/112 looper letters, 41 selfloop transitions, 28 changer transitions 40/227 dead transitions. [2022-11-18 18:30:29,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 227 transitions, 2910 flow [2022-11-18 18:30:29,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:30:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:30:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1120 transitions. [2022-11-18 18:30:29,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-18 18:30:29,457 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1120 transitions. [2022-11-18 18:30:29,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1120 transitions. [2022-11-18 18:30:29,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:29,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1120 transitions. [2022-11-18 18:30:29,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 93.33333333333333) internal successors, (1120), 12 states have internal predecessors, (1120), 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) [2022-11-18 18:30:29,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 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) [2022-11-18 18:30:29,464 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 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) [2022-11-18 18:30:29,464 INFO L175 Difference]: Start difference. First operand has 177 places, 168 transitions, 1692 flow. Second operand 12 states and 1120 transitions. [2022-11-18 18:30:29,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 227 transitions, 2910 flow [2022-11-18 18:30:29,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 227 transitions, 2873 flow, removed 14 selfloop flow, removed 7 redundant places. [2022-11-18 18:30:29,530 INFO L231 Difference]: Finished difference. Result has 180 places, 178 transitions, 1954 flow [2022-11-18 18:30:29,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1954, PETRI_PLACES=180, PETRI_TRANSITIONS=178} [2022-11-18 18:30:29,531 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 63 predicate places. [2022-11-18 18:30:29,532 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 178 transitions, 1954 flow [2022-11-18 18:30:29,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 90.66666666666667) internal successors, (816), 9 states have internal predecessors, (816), 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) [2022-11-18 18:30:29,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:29,533 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:29,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:30:29,533 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:29,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1824623683, now seen corresponding path program 2 times [2022-11-18 18:30:29,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:29,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422725845] [2022-11-18 18:30:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:29,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:30,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:30,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422725845] [2022-11-18 18:30:30,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422725845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:30,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:30,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:30:30,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052609542] [2022-11-18 18:30:30,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:30,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:30:30,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:30,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:30:30,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:30:30,653 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 112 [2022-11-18 18:30:30,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 178 transitions, 1954 flow. Second operand has 12 states, 12 states have (on average 88.41666666666667) internal successors, (1061), 12 states have internal predecessors, (1061), 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) [2022-11-18 18:30:30,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:30,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 112 [2022-11-18 18:30:30,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:31,458 INFO L130 PetriNetUnfolder]: 691/1968 cut-off events. [2022-11-18 18:30:31,458 INFO L131 PetriNetUnfolder]: For 53746/93564 co-relation queries the response was YES. [2022-11-18 18:30:31,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14603 conditions, 1968 events. 691/1968 cut-off events. For 53746/93564 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 15488 event pairs, 114 based on Foata normal form. 427/2282 useless extension candidates. Maximal degree in co-relation 14476. Up to 735 conditions per place. [2022-11-18 18:30:31,484 INFO L137 encePairwiseOnDemand]: 100/112 looper letters, 44 selfloop transitions, 31 changer transitions 40/231 dead transitions. [2022-11-18 18:30:31,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 231 transitions, 3336 flow [2022-11-18 18:30:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:30:31,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 18:30:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1271 transitions. [2022-11-18 18:30:31,488 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8105867346938775 [2022-11-18 18:30:31,488 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1271 transitions. [2022-11-18 18:30:31,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1271 transitions. [2022-11-18 18:30:31,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:31,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1271 transitions. [2022-11-18 18:30:31,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 90.78571428571429) internal successors, (1271), 14 states have internal predecessors, (1271), 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) [2022-11-18 18:30:31,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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) [2022-11-18 18:30:31,499 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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) [2022-11-18 18:30:31,499 INFO L175 Difference]: Start difference. First operand has 180 places, 178 transitions, 1954 flow. Second operand 14 states and 1271 transitions. [2022-11-18 18:30:31,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 231 transitions, 3336 flow [2022-11-18 18:30:31,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 231 transitions, 3280 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-11-18 18:30:31,585 INFO L231 Difference]: Finished difference. Result has 189 places, 182 transitions, 2140 flow [2022-11-18 18:30:31,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2140, PETRI_PLACES=189, PETRI_TRANSITIONS=182} [2022-11-18 18:30:31,587 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 72 predicate places. [2022-11-18 18:30:31,587 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 182 transitions, 2140 flow [2022-11-18 18:30:31,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 88.41666666666667) internal successors, (1061), 12 states have internal predecessors, (1061), 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) [2022-11-18 18:30:31,588 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:31,589 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:31,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:30:31,589 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:31,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:31,589 INFO L85 PathProgramCache]: Analyzing trace with hash -202324215, now seen corresponding path program 1 times [2022-11-18 18:30:31,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:31,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139748993] [2022-11-18 18:30:31,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:31,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:32,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:32,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139748993] [2022-11-18 18:30:32,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139748993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:32,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:32,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:30:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664296738] [2022-11-18 18:30:32,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:32,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:30:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:32,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:30:32,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:30:32,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 112 [2022-11-18 18:30:32,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 182 transitions, 2140 flow. Second operand has 10 states, 10 states have (on average 89.7) internal successors, (897), 10 states have internal predecessors, (897), 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) [2022-11-18 18:30:32,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:32,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 112 [2022-11-18 18:30:32,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:33,240 INFO L130 PetriNetUnfolder]: 653/1826 cut-off events. [2022-11-18 18:30:33,240 INFO L131 PetriNetUnfolder]: For 63102/105347 co-relation queries the response was YES. [2022-11-18 18:30:33,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14774 conditions, 1826 events. 653/1826 cut-off events. For 63102/105347 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 13843 event pairs, 117 based on Foata normal form. 304/2011 useless extension candidates. Maximal degree in co-relation 14640. Up to 744 conditions per place. [2022-11-18 18:30:33,266 INFO L137 encePairwiseOnDemand]: 101/112 looper letters, 53 selfloop transitions, 26 changer transitions 46/242 dead transitions. [2022-11-18 18:30:33,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 242 transitions, 3924 flow [2022-11-18 18:30:33,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:30:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:30:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1106 transitions. [2022-11-18 18:30:33,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8229166666666666 [2022-11-18 18:30:33,270 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1106 transitions. [2022-11-18 18:30:33,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1106 transitions. [2022-11-18 18:30:33,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:33,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1106 transitions. [2022-11-18 18:30:33,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.16666666666667) internal successors, (1106), 12 states have internal predecessors, (1106), 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) [2022-11-18 18:30:33,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 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) [2022-11-18 18:30:33,276 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 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) [2022-11-18 18:30:33,276 INFO L175 Difference]: Start difference. First operand has 189 places, 182 transitions, 2140 flow. Second operand 12 states and 1106 transitions. [2022-11-18 18:30:33,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 242 transitions, 3924 flow [2022-11-18 18:30:33,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 242 transitions, 3644 flow, removed 118 selfloop flow, removed 15 redundant places. [2022-11-18 18:30:33,406 INFO L231 Difference]: Finished difference. Result has 187 places, 190 transitions, 2326 flow [2022-11-18 18:30:33,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2326, PETRI_PLACES=187, PETRI_TRANSITIONS=190} [2022-11-18 18:30:33,407 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 70 predicate places. [2022-11-18 18:30:33,408 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 190 transitions, 2326 flow [2022-11-18 18:30:33,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 89.7) internal successors, (897), 10 states have internal predecessors, (897), 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) [2022-11-18 18:30:33,408 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:33,408 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:33,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:30:33,409 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:33,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:33,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1216106143, now seen corresponding path program 2 times [2022-11-18 18:30:33,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:33,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042563390] [2022-11-18 18:30:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:33,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:34,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:34,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042563390] [2022-11-18 18:30:34,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042563390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:34,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:34,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:30:34,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452833576] [2022-11-18 18:30:34,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:34,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:30:34,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:34,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:30:34,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:30:34,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 112 [2022-11-18 18:30:34,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 190 transitions, 2326 flow. Second operand has 8 states, 8 states have (on average 86.375) internal successors, (691), 8 states have internal predecessors, (691), 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) [2022-11-18 18:30:34,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:34,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 112 [2022-11-18 18:30:34,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:35,023 INFO L130 PetriNetUnfolder]: 817/2328 cut-off events. [2022-11-18 18:30:35,024 INFO L131 PetriNetUnfolder]: For 63005/105680 co-relation queries the response was YES. [2022-11-18 18:30:35,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18643 conditions, 2328 events. 817/2328 cut-off events. For 63005/105680 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 18327 event pairs, 75 based on Foata normal form. 90/2305 useless extension candidates. Maximal degree in co-relation 18513. Up to 755 conditions per place. [2022-11-18 18:30:35,059 INFO L137 encePairwiseOnDemand]: 98/112 looper letters, 87 selfloop transitions, 72 changer transitions 54/283 dead transitions. [2022-11-18 18:30:35,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 283 transitions, 4761 flow [2022-11-18 18:30:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:30:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 18:30:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 995 transitions. [2022-11-18 18:30:35,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8076298701298701 [2022-11-18 18:30:35,062 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 995 transitions. [2022-11-18 18:30:35,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 995 transitions. [2022-11-18 18:30:35,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:35,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 995 transitions. [2022-11-18 18:30:35,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 90.45454545454545) internal successors, (995), 11 states have internal predecessors, (995), 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) [2022-11-18 18:30:35,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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) [2022-11-18 18:30:35,084 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 112.0) internal successors, (1344), 12 states have internal predecessors, (1344), 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) [2022-11-18 18:30:35,084 INFO L175 Difference]: Start difference. First operand has 187 places, 190 transitions, 2326 flow. Second operand 11 states and 995 transitions. [2022-11-18 18:30:35,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 283 transitions, 4761 flow [2022-11-18 18:30:35,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 283 transitions, 4604 flow, removed 67 selfloop flow, removed 5 redundant places. [2022-11-18 18:30:35,283 INFO L231 Difference]: Finished difference. Result has 194 places, 216 transitions, 2996 flow [2022-11-18 18:30:35,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2996, PETRI_PLACES=194, PETRI_TRANSITIONS=216} [2022-11-18 18:30:35,284 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 77 predicate places. [2022-11-18 18:30:35,285 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 216 transitions, 2996 flow [2022-11-18 18:30:35,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.375) internal successors, (691), 8 states have internal predecessors, (691), 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) [2022-11-18 18:30:35,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:35,286 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:35,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:30:35,286 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:35,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:35,287 INFO L85 PathProgramCache]: Analyzing trace with hash -157574093, now seen corresponding path program 3 times [2022-11-18 18:30:35,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:35,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524537312] [2022-11-18 18:30:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:35,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:36,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:36,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524537312] [2022-11-18 18:30:36,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524537312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:36,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:36,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:30:36,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252564450] [2022-11-18 18:30:36,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:36,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:30:36,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:36,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:30:36,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:30:36,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2022-11-18 18:30:36,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 216 transitions, 2996 flow. Second operand has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2022-11-18 18:30:36,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:36,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2022-11-18 18:30:36,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:37,853 INFO L130 PetriNetUnfolder]: 727/2037 cut-off events. [2022-11-18 18:30:37,853 INFO L131 PetriNetUnfolder]: For 70973/110191 co-relation queries the response was YES. [2022-11-18 18:30:37,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18084 conditions, 2037 events. 727/2037 cut-off events. For 70973/110191 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15227 event pairs, 32 based on Foata normal form. 144/2072 useless extension candidates. Maximal degree in co-relation 17943. Up to 647 conditions per place. [2022-11-18 18:30:37,875 INFO L137 encePairwiseOnDemand]: 96/112 looper letters, 81 selfloop transitions, 89 changer transitions 51/288 dead transitions. [2022-11-18 18:30:37,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 288 transitions, 5233 flow [2022-11-18 18:30:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:30:37,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 18:30:37,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1221 transitions. [2022-11-18 18:30:37,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7786989795918368 [2022-11-18 18:30:37,878 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1221 transitions. [2022-11-18 18:30:37,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1221 transitions. [2022-11-18 18:30:37,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:37,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1221 transitions. [2022-11-18 18:30:37,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 87.21428571428571) internal successors, (1221), 14 states have internal predecessors, (1221), 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) [2022-11-18 18:30:37,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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) [2022-11-18 18:30:37,885 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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) [2022-11-18 18:30:37,885 INFO L175 Difference]: Start difference. First operand has 194 places, 216 transitions, 2996 flow. Second operand 14 states and 1221 transitions. [2022-11-18 18:30:37,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 288 transitions, 5233 flow [2022-11-18 18:30:38,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 288 transitions, 5064 flow, removed 83 selfloop flow, removed 8 redundant places. [2022-11-18 18:30:38,062 INFO L231 Difference]: Finished difference. Result has 201 places, 224 transitions, 3514 flow [2022-11-18 18:30:38,062 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2957, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3514, PETRI_PLACES=201, PETRI_TRANSITIONS=224} [2022-11-18 18:30:38,064 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 84 predicate places. [2022-11-18 18:30:38,065 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 224 transitions, 3514 flow [2022-11-18 18:30:38,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2022-11-18 18:30:38,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:38,066 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:38,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:30:38,066 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:38,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:38,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1463507439, now seen corresponding path program 4 times [2022-11-18 18:30:38,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:38,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434921446] [2022-11-18 18:30:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:38,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:40,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:40,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434921446] [2022-11-18 18:30:40,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434921446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:40,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:40,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:30:40,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285553814] [2022-11-18 18:30:40,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:40,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:30:40,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:40,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:30:40,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:30:40,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 112 [2022-11-18 18:30:40,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 224 transitions, 3514 flow. Second operand has 12 states, 12 states have (on average 81.91666666666667) internal successors, (983), 12 states have internal predecessors, (983), 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) [2022-11-18 18:30:40,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:40,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 112 [2022-11-18 18:30:40,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:41,435 INFO L130 PetriNetUnfolder]: 801/2407 cut-off events. [2022-11-18 18:30:41,436 INFO L131 PetriNetUnfolder]: For 79528/100339 co-relation queries the response was YES. [2022-11-18 18:30:41,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21613 conditions, 2407 events. 801/2407 cut-off events. For 79528/100339 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19525 event pairs, 67 based on Foata normal form. 200/2510 useless extension candidates. Maximal degree in co-relation 21465. Up to 736 conditions per place. [2022-11-18 18:30:41,479 INFO L137 encePairwiseOnDemand]: 96/112 looper letters, 92 selfloop transitions, 95 changer transitions 84/337 dead transitions. [2022-11-18 18:30:41,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 337 transitions, 7158 flow [2022-11-18 18:30:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:30:41,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:30:41,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1550 transitions. [2022-11-18 18:30:41,483 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7688492063492064 [2022-11-18 18:30:41,483 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1550 transitions. [2022-11-18 18:30:41,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1550 transitions. [2022-11-18 18:30:41,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:41,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1550 transitions. [2022-11-18 18:30:41,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 86.11111111111111) internal successors, (1550), 18 states have internal predecessors, (1550), 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) [2022-11-18 18:30:41,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 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) [2022-11-18 18:30:41,493 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 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) [2022-11-18 18:30:41,493 INFO L175 Difference]: Start difference. First operand has 201 places, 224 transitions, 3514 flow. Second operand 18 states and 1550 transitions. [2022-11-18 18:30:41,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 337 transitions, 7158 flow [2022-11-18 18:30:41,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 337 transitions, 7018 flow, removed 65 selfloop flow, removed 9 redundant places. [2022-11-18 18:30:41,726 INFO L231 Difference]: Finished difference. Result has 214 places, 233 transitions, 4063 flow [2022-11-18 18:30:41,726 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=3460, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4063, PETRI_PLACES=214, PETRI_TRANSITIONS=233} [2022-11-18 18:30:41,727 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 97 predicate places. [2022-11-18 18:30:41,727 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 233 transitions, 4063 flow [2022-11-18 18:30:41,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.91666666666667) internal successors, (983), 12 states have internal predecessors, (983), 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) [2022-11-18 18:30:41,728 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:41,728 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:41,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:30:41,728 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:41,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1188097599, now seen corresponding path program 5 times [2022-11-18 18:30:41,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:41,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723312808] [2022-11-18 18:30:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:41,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:43,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:43,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723312808] [2022-11-18 18:30:43,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723312808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:43,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:43,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:30:43,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335432245] [2022-11-18 18:30:43,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:43,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:30:43,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:43,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:30:43,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:30:43,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 112 [2022-11-18 18:30:43,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 233 transitions, 4063 flow. Second operand has 10 states, 10 states have (on average 82.3) internal successors, (823), 10 states have internal predecessors, (823), 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) [2022-11-18 18:30:43,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:43,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 112 [2022-11-18 18:30:43,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:44,819 INFO L130 PetriNetUnfolder]: 639/1921 cut-off events. [2022-11-18 18:30:44,819 INFO L131 PetriNetUnfolder]: For 77976/114928 co-relation queries the response was YES. [2022-11-18 18:30:44,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18713 conditions, 1921 events. 639/1921 cut-off events. For 77976/114928 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14717 event pairs, 27 based on Foata normal form. 157/1975 useless extension candidates. Maximal degree in co-relation 18557. Up to 618 conditions per place. [2022-11-18 18:30:44,840 INFO L137 encePairwiseOnDemand]: 94/112 looper letters, 106 selfloop transitions, 95 changer transitions 83/350 dead transitions. [2022-11-18 18:30:44,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 350 transitions, 8090 flow [2022-11-18 18:30:44,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:30:44,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 18:30:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1470 transitions. [2022-11-18 18:30:44,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7720588235294118 [2022-11-18 18:30:44,844 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1470 transitions. [2022-11-18 18:30:44,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1470 transitions. [2022-11-18 18:30:44,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:44,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1470 transitions. [2022-11-18 18:30:44,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 86.47058823529412) internal successors, (1470), 17 states have internal predecessors, (1470), 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) [2022-11-18 18:30:44,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 112.0) internal successors, (2016), 18 states have internal predecessors, (2016), 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) [2022-11-18 18:30:44,852 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 112.0) internal successors, (2016), 18 states have internal predecessors, (2016), 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) [2022-11-18 18:30:44,852 INFO L175 Difference]: Start difference. First operand has 214 places, 233 transitions, 4063 flow. Second operand 17 states and 1470 transitions. [2022-11-18 18:30:44,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 350 transitions, 8090 flow [2022-11-18 18:30:45,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 350 transitions, 7557 flow, removed 182 selfloop flow, removed 15 redundant places. [2022-11-18 18:30:45,077 INFO L231 Difference]: Finished difference. Result has 218 places, 247 transitions, 4611 flow [2022-11-18 18:30:45,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=3805, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4611, PETRI_PLACES=218, PETRI_TRANSITIONS=247} [2022-11-18 18:30:45,078 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 101 predicate places. [2022-11-18 18:30:45,078 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 247 transitions, 4611 flow [2022-11-18 18:30:45,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 82.3) internal successors, (823), 10 states have internal predecessors, (823), 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) [2022-11-18 18:30:45,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:45,078 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:45,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:30:45,079 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:45,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:45,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1993703068, now seen corresponding path program 1 times [2022-11-18 18:30:45,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:45,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133648634] [2022-11-18 18:30:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:45,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:45,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:45,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133648634] [2022-11-18 18:30:45,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133648634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:45,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:45,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:30:45,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216405465] [2022-11-18 18:30:45,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:45,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:30:45,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:45,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:30:45,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:30:45,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-18 18:30:45,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 247 transitions, 4611 flow. Second operand has 12 states, 12 states have (on average 87.66666666666667) internal successors, (1052), 12 states have internal predecessors, (1052), 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) [2022-11-18 18:30:45,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:45,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-18 18:30:45,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:46,692 INFO L130 PetriNetUnfolder]: 480/1563 cut-off events. [2022-11-18 18:30:46,692 INFO L131 PetriNetUnfolder]: For 73634/103672 co-relation queries the response was YES. [2022-11-18 18:30:46,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15271 conditions, 1563 events. 480/1563 cut-off events. For 73634/103672 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12018 event pairs, 63 based on Foata normal form. 213/1667 useless extension candidates. Maximal degree in co-relation 15113. Up to 594 conditions per place. [2022-11-18 18:30:46,714 INFO L137 encePairwiseOnDemand]: 100/112 looper letters, 78 selfloop transitions, 28 changer transitions 23/274 dead transitions. [2022-11-18 18:30:46,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 274 transitions, 5743 flow [2022-11-18 18:30:46,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:30:46,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 18:30:46,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1161 transitions. [2022-11-18 18:30:46,719 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7973901098901099 [2022-11-18 18:30:46,719 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1161 transitions. [2022-11-18 18:30:46,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1161 transitions. [2022-11-18 18:30:46,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:46,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1161 transitions. [2022-11-18 18:30:46,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 89.3076923076923) internal successors, (1161), 13 states have internal predecessors, (1161), 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) [2022-11-18 18:30:46,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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) [2022-11-18 18:30:46,726 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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) [2022-11-18 18:30:46,726 INFO L175 Difference]: Start difference. First operand has 218 places, 247 transitions, 4611 flow. Second operand 13 states and 1161 transitions. [2022-11-18 18:30:46,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 274 transitions, 5743 flow [2022-11-18 18:30:46,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 274 transitions, 5616 flow, removed 62 selfloop flow, removed 11 redundant places. [2022-11-18 18:30:46,946 INFO L231 Difference]: Finished difference. Result has 217 places, 246 transitions, 4674 flow [2022-11-18 18:30:46,947 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=4538, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4674, PETRI_PLACES=217, PETRI_TRANSITIONS=246} [2022-11-18 18:30:46,947 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 100 predicate places. [2022-11-18 18:30:46,947 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 246 transitions, 4674 flow [2022-11-18 18:30:46,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 87.66666666666667) internal successors, (1052), 12 states have internal predecessors, (1052), 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) [2022-11-18 18:30:46,948 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:46,948 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:46,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 18:30:46,949 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:46,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:46,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1355780710, now seen corresponding path program 2 times [2022-11-18 18:30:46,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:46,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758127304] [2022-11-18 18:30:46,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:46,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:48,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:48,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758127304] [2022-11-18 18:30:48,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758127304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:48,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:48,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 18:30:48,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816086200] [2022-11-18 18:30:48,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:48,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:30:48,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:48,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:30:48,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:30:48,457 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 112 [2022-11-18 18:30:48,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 246 transitions, 4674 flow. Second operand has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 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) [2022-11-18 18:30:48,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:48,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 112 [2022-11-18 18:30:48,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:49,653 INFO L130 PetriNetUnfolder]: 581/2004 cut-off events. [2022-11-18 18:30:49,653 INFO L131 PetriNetUnfolder]: For 77748/121095 co-relation queries the response was YES. [2022-11-18 18:30:49,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18795 conditions, 2004 events. 581/2004 cut-off events. For 77748/121095 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16721 event pairs, 29 based on Foata normal form. 128/2032 useless extension candidates. Maximal degree in co-relation 18633. Up to 589 conditions per place. [2022-11-18 18:30:49,669 INFO L137 encePairwiseOnDemand]: 96/112 looper letters, 96 selfloop transitions, 74 changer transitions 109/343 dead transitions. [2022-11-18 18:30:49,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 343 transitions, 8126 flow [2022-11-18 18:30:49,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:30:49,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-18 18:30:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1580 transitions. [2022-11-18 18:30:49,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7424812030075187 [2022-11-18 18:30:49,673 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1580 transitions. [2022-11-18 18:30:49,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1580 transitions. [2022-11-18 18:30:49,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:49,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1580 transitions. [2022-11-18 18:30:49,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 83.15789473684211) internal successors, (1580), 19 states have internal predecessors, (1580), 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) [2022-11-18 18:30:49,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 112.0) internal successors, (2240), 20 states have internal predecessors, (2240), 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) [2022-11-18 18:30:49,681 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 112.0) internal successors, (2240), 20 states have internal predecessors, (2240), 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) [2022-11-18 18:30:49,681 INFO L175 Difference]: Start difference. First operand has 217 places, 246 transitions, 4674 flow. Second operand 19 states and 1580 transitions. [2022-11-18 18:30:49,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 343 transitions, 8126 flow [2022-11-18 18:30:49,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 343 transitions, 7752 flow, removed 166 selfloop flow, removed 10 redundant places. [2022-11-18 18:30:49,901 INFO L231 Difference]: Finished difference. Result has 231 places, 218 transitions, 4314 flow [2022-11-18 18:30:49,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=4516, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4314, PETRI_PLACES=231, PETRI_TRANSITIONS=218} [2022-11-18 18:30:49,902 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 114 predicate places. [2022-11-18 18:30:49,902 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 218 transitions, 4314 flow [2022-11-18 18:30:49,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 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) [2022-11-18 18:30:49,902 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:49,902 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:49,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 18:30:49,903 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:49,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash -566274704, now seen corresponding path program 3 times [2022-11-18 18:30:49,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:49,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986182746] [2022-11-18 18:30:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:49,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:51,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:51,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986182746] [2022-11-18 18:30:51,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986182746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:51,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:51,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:30:51,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247120673] [2022-11-18 18:30:51,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:51,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:30:51,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:51,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:30:51,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:30:51,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 112 [2022-11-18 18:30:51,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 218 transitions, 4314 flow. Second operand has 12 states, 12 states have (on average 81.08333333333333) internal successors, (973), 12 states have internal predecessors, (973), 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) [2022-11-18 18:30:51,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:51,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 112 [2022-11-18 18:30:51,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:52,059 INFO L130 PetriNetUnfolder]: 328/1226 cut-off events. [2022-11-18 18:30:52,059 INFO L131 PetriNetUnfolder]: For 48015/64453 co-relation queries the response was YES. [2022-11-18 18:30:52,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11753 conditions, 1226 events. 328/1226 cut-off events. For 48015/64453 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9434 event pairs, 46 based on Foata normal form. 45/1226 useless extension candidates. Maximal degree in co-relation 11583. Up to 362 conditions per place. [2022-11-18 18:30:52,072 INFO L137 encePairwiseOnDemand]: 95/112 looper letters, 92 selfloop transitions, 75 changer transitions 54/286 dead transitions. [2022-11-18 18:30:52,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 286 transitions, 6628 flow [2022-11-18 18:30:52,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:30:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:30:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1506 transitions. [2022-11-18 18:30:52,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7470238095238095 [2022-11-18 18:30:52,076 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1506 transitions. [2022-11-18 18:30:52,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1506 transitions. [2022-11-18 18:30:52,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:52,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1506 transitions. [2022-11-18 18:30:52,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 83.66666666666667) internal successors, (1506), 18 states have internal predecessors, (1506), 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) [2022-11-18 18:30:52,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 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) [2022-11-18 18:30:52,084 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 112.0) internal successors, (2128), 19 states have internal predecessors, (2128), 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) [2022-11-18 18:30:52,084 INFO L175 Difference]: Start difference. First operand has 231 places, 218 transitions, 4314 flow. Second operand 18 states and 1506 transitions. [2022-11-18 18:30:52,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 286 transitions, 6628 flow [2022-11-18 18:30:52,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 286 transitions, 6348 flow, removed 103 selfloop flow, removed 20 redundant places. [2022-11-18 18:30:52,256 INFO L231 Difference]: Finished difference. Result has 230 places, 214 transitions, 4324 flow [2022-11-18 18:30:52,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=4142, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4324, PETRI_PLACES=230, PETRI_TRANSITIONS=214} [2022-11-18 18:30:52,257 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 113 predicate places. [2022-11-18 18:30:52,257 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 214 transitions, 4324 flow [2022-11-18 18:30:52,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.08333333333333) internal successors, (973), 12 states have internal predecessors, (973), 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) [2022-11-18 18:30:52,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:52,258 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:52,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 18:30:52,258 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:52,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:52,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1491130716, now seen corresponding path program 1 times [2022-11-18 18:30:52,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:52,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961045370] [2022-11-18 18:30:52,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:52,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:52,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:52,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961045370] [2022-11-18 18:30:52,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961045370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:52,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:52,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:30:52,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355858303] [2022-11-18 18:30:52,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:52,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:30:52,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:52,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:30:52,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:30:52,472 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2022-11-18 18:30:52,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 214 transitions, 4324 flow. Second operand has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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) [2022-11-18 18:30:52,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:52,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2022-11-18 18:30:52,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:53,694 INFO L130 PetriNetUnfolder]: 2416/5228 cut-off events. [2022-11-18 18:30:53,694 INFO L131 PetriNetUnfolder]: For 237018/248260 co-relation queries the response was YES. [2022-11-18 18:30:53,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32150 conditions, 5228 events. 2416/5228 cut-off events. For 237018/248260 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 43688 event pairs, 125 based on Foata normal form. 1182/6217 useless extension candidates. Maximal degree in co-relation 31992. Up to 1592 conditions per place. [2022-11-18 18:30:53,749 INFO L137 encePairwiseOnDemand]: 102/112 looper letters, 118 selfloop transitions, 15 changer transitions 116/361 dead transitions. [2022-11-18 18:30:53,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 361 transitions, 9211 flow [2022-11-18 18:30:53,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:30:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 18:30:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 963 transitions. [2022-11-18 18:30:53,752 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8598214285714286 [2022-11-18 18:30:53,752 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 963 transitions. [2022-11-18 18:30:53,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 963 transitions. [2022-11-18 18:30:53,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:53,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 963 transitions. [2022-11-18 18:30:53,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.3) internal successors, (963), 10 states have internal predecessors, (963), 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) [2022-11-18 18:30:53,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2022-11-18 18:30:53,757 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 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) [2022-11-18 18:30:53,758 INFO L175 Difference]: Start difference. First operand has 230 places, 214 transitions, 4324 flow. Second operand 10 states and 963 transitions. [2022-11-18 18:30:53,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 361 transitions, 9211 flow [2022-11-18 18:30:54,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 361 transitions, 8268 flow, removed 216 selfloop flow, removed 32 redundant places. [2022-11-18 18:30:54,009 INFO L231 Difference]: Finished difference. Result has 204 places, 185 transitions, 2911 flow [2022-11-18 18:30:54,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2832, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2911, PETRI_PLACES=204, PETRI_TRANSITIONS=185} [2022-11-18 18:30:54,010 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 87 predicate places. [2022-11-18 18:30:54,010 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 185 transitions, 2911 flow [2022-11-18 18:30:54,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 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) [2022-11-18 18:30:54,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:54,011 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:54,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 18:30:54,011 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:54,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:54,012 INFO L85 PathProgramCache]: Analyzing trace with hash -510640028, now seen corresponding path program 1 times [2022-11-18 18:30:54,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:54,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881910482] [2022-11-18 18:30:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:54,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:54,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:54,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881910482] [2022-11-18 18:30:54,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881910482] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:54,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:54,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:30:54,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327157886] [2022-11-18 18:30:54,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:54,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:30:54,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:30:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:30:54,210 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2022-11-18 18:30:54,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 185 transitions, 2911 flow. Second operand has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:54,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:54,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2022-11-18 18:30:54,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:55,494 INFO L130 PetriNetUnfolder]: 2059/4682 cut-off events. [2022-11-18 18:30:55,495 INFO L131 PetriNetUnfolder]: For 168574/176922 co-relation queries the response was YES. [2022-11-18 18:30:55,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30361 conditions, 4682 events. 2059/4682 cut-off events. For 168574/176922 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 41250 event pairs, 42 based on Foata normal form. 971/5584 useless extension candidates. Maximal degree in co-relation 30228. Up to 1280 conditions per place. [2022-11-18 18:30:55,535 INFO L137 encePairwiseOnDemand]: 102/112 looper letters, 90 selfloop transitions, 20 changer transitions 143/356 dead transitions. [2022-11-18 18:30:55,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 356 transitions, 7968 flow [2022-11-18 18:30:55,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:30:55,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 18:30:55,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1246 transitions. [2022-11-18 18:30:55,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8557692307692307 [2022-11-18 18:30:55,538 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1246 transitions. [2022-11-18 18:30:55,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1246 transitions. [2022-11-18 18:30:55,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:55,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1246 transitions. [2022-11-18 18:30:55,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 95.84615384615384) internal successors, (1246), 13 states have internal predecessors, (1246), 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) [2022-11-18 18:30:55,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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) [2022-11-18 18:30:55,543 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 112.0) internal successors, (1568), 14 states have internal predecessors, (1568), 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) [2022-11-18 18:30:55,543 INFO L175 Difference]: Start difference. First operand has 204 places, 185 transitions, 2911 flow. Second operand 13 states and 1246 transitions. [2022-11-18 18:30:55,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 356 transitions, 7968 flow [2022-11-18 18:30:55,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 356 transitions, 7739 flow, removed 62 selfloop flow, removed 6 redundant places. [2022-11-18 18:30:55,893 INFO L231 Difference]: Finished difference. Result has 214 places, 174 transitions, 2426 flow [2022-11-18 18:30:55,894 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2555, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2426, PETRI_PLACES=214, PETRI_TRANSITIONS=174} [2022-11-18 18:30:55,894 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 97 predicate places. [2022-11-18 18:30:55,894 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 174 transitions, 2426 flow [2022-11-18 18:30:55,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:30:55,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:55,895 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:55,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 18:30:55,895 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:55,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:55,896 INFO L85 PathProgramCache]: Analyzing trace with hash -711592019, now seen corresponding path program 1 times [2022-11-18 18:30:55,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:55,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732944275] [2022-11-18 18:30:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:55,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:55,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:30:56,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:56,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:30:56,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732944275] [2022-11-18 18:30:56,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732944275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:30:56,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:30:56,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:30:56,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566781979] [2022-11-18 18:30:56,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:30:56,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:30:56,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:30:56,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:30:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:30:56,117 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 112 [2022-11-18 18:30:56,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 174 transitions, 2426 flow. Second operand has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 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) [2022-11-18 18:30:56,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:30:56,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 112 [2022-11-18 18:30:56,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:30:56,796 INFO L130 PetriNetUnfolder]: 642/1911 cut-off events. [2022-11-18 18:30:56,796 INFO L131 PetriNetUnfolder]: For 58221/59631 co-relation queries the response was YES. [2022-11-18 18:30:56,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12972 conditions, 1911 events. 642/1911 cut-off events. For 58221/59631 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16026 event pairs, 28 based on Foata normal form. 310/2208 useless extension candidates. Maximal degree in co-relation 12914. Up to 471 conditions per place. [2022-11-18 18:30:56,812 INFO L137 encePairwiseOnDemand]: 102/112 looper letters, 20 selfloop transitions, 12 changer transitions 139/245 dead transitions. [2022-11-18 18:30:56,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 245 transitions, 4388 flow [2022-11-18 18:30:56,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:30:56,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 18:30:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1316 transitions. [2022-11-18 18:30:56,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-11-18 18:30:56,814 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1316 transitions. [2022-11-18 18:30:56,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1316 transitions. [2022-11-18 18:30:56,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:30:56,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1316 transitions. [2022-11-18 18:30:56,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 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) [2022-11-18 18:30:56,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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) [2022-11-18 18:30:56,821 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 112.0) internal successors, (1680), 15 states have internal predecessors, (1680), 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) [2022-11-18 18:30:56,821 INFO L175 Difference]: Start difference. First operand has 214 places, 174 transitions, 2426 flow. Second operand 14 states and 1316 transitions. [2022-11-18 18:30:56,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 245 transitions, 4388 flow [2022-11-18 18:30:56,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 245 transitions, 3893 flow, removed 228 selfloop flow, removed 10 redundant places. [2022-11-18 18:30:56,936 INFO L231 Difference]: Finished difference. Result has 217 places, 100 transitions, 636 flow [2022-11-18 18:30:56,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2112, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=636, PETRI_PLACES=217, PETRI_TRANSITIONS=100} [2022-11-18 18:30:56,937 INFO L288 CegarLoopForPetriNet]: 117 programPoint places, 100 predicate places. [2022-11-18 18:30:56,937 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 100 transitions, 636 flow [2022-11-18 18:30:56,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.0) internal successors, (728), 8 states have internal predecessors, (728), 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) [2022-11-18 18:30:56,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:30:56,938 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:56,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 18:30:56,938 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-18 18:30:56,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:56,938 INFO L85 PathProgramCache]: Analyzing trace with hash 325968206, now seen corresponding path program 1 times [2022-11-18 18:30:56,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:30:56,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518524805] [2022-11-18 18:30:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:30:56,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:30:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:30:56,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:30:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:30:57,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:30:57,050 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 18:30:57,051 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-18 18:30:57,053 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-18 18:30:57,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-18 18:30:57,054 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-11-18 18:30:57,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2022-11-18 18:30:57,055 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-18 18:30:57,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 18:30:57,056 INFO L444 BasicCegarLoop]: Path program histogram: [5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:57,062 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 18:30:57,063 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:30:57,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:30:57 BasicIcfg [2022-11-18 18:30:57,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:30:57,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:30:57,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:30:57,191 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:30:57,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:30:09" (3/4) ... [2022-11-18 18:30:57,194 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-18 18:30:57,295 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:30:57,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:30:57,296 INFO L158 Benchmark]: Toolchain (without parser) took 49927.88ms. Allocated memory was 117.4MB in the beginning and 861.9MB in the end (delta: 744.5MB). Free memory was 80.0MB in the beginning and 466.2MB in the end (delta: -386.2MB). Peak memory consumption was 358.1MB. Max. memory is 16.1GB. [2022-11-18 18:30:57,296 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory was 88.2MB in the beginning and 88.2MB in the end (delta: 30.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:30:57,297 INFO L158 Benchmark]: CACSL2BoogieTranslator took 682.38ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 79.6MB in the end (delta: 229.4kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:30:57,297 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.87ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 77.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:30:57,298 INFO L158 Benchmark]: Boogie Preprocessor took 55.24ms. Allocated memory is still 117.4MB. Free memory was 77.1MB in the beginning and 75.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:30:57,298 INFO L158 Benchmark]: RCFGBuilder took 979.38ms. Allocated memory is still 117.4MB. Free memory was 75.0MB in the beginning and 43.0MB in the end (delta: 32.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-18 18:30:57,298 INFO L158 Benchmark]: TraceAbstraction took 48000.70ms. Allocated memory was 117.4MB in the beginning and 861.9MB in the end (delta: 744.5MB). Free memory was 42.4MB in the beginning and 487.2MB in the end (delta: -444.7MB). Peak memory consumption was 301.9MB. Max. memory is 16.1GB. [2022-11-18 18:30:57,299 INFO L158 Benchmark]: Witness Printer took 104.68ms. Allocated memory is still 861.9MB. Free memory was 487.2MB in the beginning and 466.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-18 18:30:57,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory was 88.2MB in the beginning and 88.2MB in the end (delta: 30.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 682.38ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 79.6MB in the end (delta: 229.4kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.87ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 77.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.24ms. Allocated memory is still 117.4MB. Free memory was 77.1MB in the beginning and 75.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 979.38ms. Allocated memory is still 117.4MB. Free memory was 75.0MB in the beginning and 43.0MB in the end (delta: 32.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 48000.70ms. Allocated memory was 117.4MB in the beginning and 861.9MB in the end (delta: 744.5MB). Free memory was 42.4MB in the beginning and 487.2MB in the end (delta: -444.7MB). Peak memory consumption was 301.9MB. Max. memory is 16.1GB. * Witness Printer took 104.68ms. Allocated memory is still 861.9MB. Free memory was 487.2MB in the beginning and 466.2MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L734] 0 _Bool weak$$choice0; VAL [weak$$choice0=0] [L735] 0 _Bool weak$$choice2; VAL [weak$$choice0=0, weak$$choice2=0] [L728] 0 int y$w_buff0; VAL [weak$$choice0=0, weak$$choice2=0, y$w_buff0=0] [L730] 0 int y$w_buff1; VAL [weak$$choice0=0, weak$$choice2=0, y$w_buff0=0, y$w_buff1=0] [L720] 0 _Bool y$r_buff0_thd2; VAL [weak$$choice0=0, weak$$choice2=0, y$r_buff0_thd2=0, y$w_buff0=0, y$w_buff1=0] [L721] 0 _Bool y$r_buff0_thd3; VAL [weak$$choice0=0, weak$$choice2=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$w_buff0=0, y$w_buff1=0] [L717] 0 int y$mem_tmp; VAL [weak$$choice0=0, weak$$choice2=0, y$mem_tmp=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$w_buff0=0, y$w_buff1=0] [L718] 0 _Bool y$r_buff0_thd0; VAL [weak$$choice0=0, weak$$choice2=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$w_buff0=0, y$w_buff1=0] [L719] 0 _Bool y$r_buff0_thd1; VAL [weak$$choice0=0, weak$$choice2=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$w_buff0=0, y$w_buff1=0] [L726] 0 _Bool y$read_delayed; VAL [weak$$choice0=0, weak$$choice2=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$read_delayed=0, y$w_buff0=0, y$w_buff1=0] [L709] 0 int __unbuffered_cnt = 0; VAL [__unbuffered_cnt=0, weak$$choice0=0, weak$$choice2=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$read_delayed=0, y$w_buff0=0, y$w_buff1=0] [L716] 0 _Bool y$flush_delayed; VAL [__unbuffered_cnt=0, weak$$choice0=0, weak$$choice2=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$read_delayed=0, y$w_buff0=0, y$w_buff1=0] [L731] 0 _Bool y$w_buff1_used; VAL [__unbuffered_cnt=0, weak$$choice0=0, weak$$choice2=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$read_delayed=0, y$w_buff0=0, y$w_buff1=0, y$w_buff1_used=0] [L711] 0 _Bool main$tmp_guard1; VAL [__unbuffered_cnt=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$read_delayed=0, y$w_buff0=0, y$w_buff1=0, y$w_buff1_used=0] [L710] 0 _Bool main$tmp_guard0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$read_delayed=0, y$w_buff0=0, y$w_buff1=0, y$w_buff1_used=0] [L727] 0 int *y$read_delayed_var; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff1=0, y$w_buff1_used=0] [L729] 0 _Bool y$w_buff0_used; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L713] 0 int x = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L722] 0 _Bool y$r_buff1_thd0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L715] 0 int y = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L724] 0 _Bool y$r_buff1_thd2; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0] [L733] 0 int z = 0; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L723] 0 _Bool y$r_buff1_thd1; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L725] 0 _Bool y$r_buff1_thd3; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L811] 0 pthread_t t2492; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L812] FCALL, FORK 0 pthread_create(&t2492, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2492, ((void *)0), P0, ((void *)0))=-2, t2492={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L813] 0 pthread_t t2493; VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L814] FCALL, FORK 0 pthread_create(&t2493, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2493, ((void *)0), P1, ((void *)0))=-1, t2492={5:0}, t2493={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L815] 0 pthread_t t2494; VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L816] FCALL, FORK 0 pthread_create(&t2494, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2494, ((void *)0), P2, ((void *)0))=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L774] 3 y$w_buff1 = y$w_buff0 [L775] 3 y$w_buff0 = 2 [L776] 3 y$w_buff1_used = y$w_buff0_used [L777] 3 y$w_buff0_used = (_Bool)1 [L778] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L778] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L779] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L780] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L781] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L782] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L783] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L786] 3 z = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L739] 1 z = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L742] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L754] 2 x = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L757] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=2] [L789] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L790] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L791] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L792] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L793] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L760] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L761] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L762] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L763] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L764] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L767] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L796] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L818] 0 main$tmp_guard0 = __unbuffered_cnt == 3 VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L820] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) VAL [\old(cond)=1, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, cond=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L820] RET 0 assume_abort_if_not(main$tmp_guard0) [L822] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L823] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L824] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L825] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L826] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L829] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L830] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L831] 0 y$flush_delayed = weak$$choice2 [L832] 0 y$mem_tmp = y [L833] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L834] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L835] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L836] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L837] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L838] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L839] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L840] 0 main$tmp_guard1 = !(x == 2 && y == 2 && z == 2) [L841] 0 y = y$flush_delayed ? y$mem_tmp : y [L842] 0 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2492={5:0}, t2493={6:0}, t2494={3:0}, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L844] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(expression)=0, \old(expression)=1, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, __unbuffered_cnt=3, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=2] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 812]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 816]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 814]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 138 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 47.7s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 25.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1566 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1566 mSDsluCounter, 2266 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1830 mSDsCounter, 287 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2828 IncrementalHoareTripleChecker+Invalid, 3115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 287 mSolverCounterUnsat, 436 mSDtfsCounter, 2828 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 314 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4674occurred in iteration=16, InterpolantAutomatonStates: 288, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 20.4s InterpolantComputationTime, 1706 NumberOfCodeBlocks, 1706 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1599 ConstructedInterpolants, 0 QuantifiedInterpolants, 10932 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-18 18:30:57,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_985d1d69-70fc-49a8-8914-39bb2a492abb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE