./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:58:04,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:58:04,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:58:04,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:58:04,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:58:04,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:58:04,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:58:04,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:58:04,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:58:04,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:58:04,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:58:04,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:58:04,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:58:04,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:58:04,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:58:04,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:58:04,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:58:04,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:58:04,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:58:04,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:58:04,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:58:04,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:58:04,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:58:04,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:58:04,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:58:04,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:58:04,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:58:04,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:58:04,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:58:04,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:58:04,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:58:04,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:58:04,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:58:04,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:58:04,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:58:04,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:58:04,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:58:04,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:58:04,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:58:04,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:58:04,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:58:04,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:58:04,292 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:58:04,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:58:04,293 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:58:04,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:58:04,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:58:04,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:58:04,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:58:04,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:58:04,296 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:58:04,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:58:04,298 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:58:04,298 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:58:04,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:58:04,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:58:04,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:58:04,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:58:04,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:58:04,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:58:04,300 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:58:04,300 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:58:04,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:58:04,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:58:04,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:58:04,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:58:04,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:58:04,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:58:04,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:58:04,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:58:04,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:58:04,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:58:04,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:58:04,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:58:04,304 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:58:04,305 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:58:04,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:58:04,305 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_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2022-11-20 11:58:04,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:58:04,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:58:04,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:58:04,650 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:58:04,651 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:58:04,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-11-20 11:58:08,089 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:58:08,353 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:58:08,354 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2022-11-20 11:58:08,370 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/data/c0d96a01e/a6414eb41e9c4abcbfec44d1051cf48c/FLAGe0524ad17 [2022-11-20 11:58:08,384 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/data/c0d96a01e/a6414eb41e9c4abcbfec44d1051cf48c [2022-11-20 11:58:08,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:58:08,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:58:08,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:58:08,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:58:08,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:58:08,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:58:08" (1/1) ... [2022-11-20 11:58:08,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58465da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:08, skipping insertion in model container [2022-11-20 11:58:08,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:58:08" (1/1) ... [2022-11-20 11:58:08,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:58:08,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:58:08,954 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-11-20 11:58:08,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:58:09,015 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:58:09,101 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i[41322,41335] [2022-11-20 11:58:09,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:58:09,217 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:58:09,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:09 WrapperNode [2022-11-20 11:58:09,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:58:09,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:58:09,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:58:09,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:58:09,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:09" (1/1) ... [2022-11-20 11:58:09,255 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:09" (1/1) ... [2022-11-20 11:58:09,299 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2022-11-20 11:58:09,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:58:09,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:58:09,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:58:09,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:58:09,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:09" (1/1) ... [2022-11-20 11:58:09,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:09" (1/1) ... [2022-11-20 11:58:09,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:09" (1/1) ... [2022-11-20 11:58:09,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:09" (1/1) ... [2022-11-20 11:58:09,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:09" (1/1) ... [2022-11-20 11:58:09,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:09" (1/1) ... [2022-11-20 11:58:09,336 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:09" (1/1) ... [2022-11-20 11:58:09,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:09" (1/1) ... [2022-11-20 11:58:09,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:58:09,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:58:09,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:58:09,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:58:09,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:09" (1/1) ... [2022-11-20 11:58:09,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:58:09,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:58:09,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:58:09,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:58:09,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:58:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:58:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:58:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:58:09,475 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 11:58:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:58:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 11:58:09,476 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 11:58:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:58:09,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:58:09,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:58:09,479 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:58:09,665 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:58:09,668 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:58:09,992 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:58:10,000 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:58:10,000 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 11:58:10,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:58:10 BoogieIcfgContainer [2022-11-20 11:58:10,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:58:10,005 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:58:10,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:58:10,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:58:10,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:58:08" (1/3) ... [2022-11-20 11:58:10,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48496b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:58:10, skipping insertion in model container [2022-11-20 11:58:10,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:09" (2/3) ... [2022-11-20 11:58:10,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48496b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:58:10, skipping insertion in model container [2022-11-20 11:58:10,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:58:10" (3/3) ... [2022-11-20 11:58:10,012 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2022-11-20 11:58:10,022 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:58:10,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:58:10,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 11:58:10,034 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:58:10,105 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 11:58:10,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 141 transitions, 290 flow [2022-11-20 11:58:10,212 INFO L130 PetriNetUnfolder]: 23/185 cut-off events. [2022-11-20 11:58:10,212 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 11:58:10,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 185 events. 23/185 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 422 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2022-11-20 11:58:10,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 141 transitions, 290 flow [2022-11-20 11:58:10,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 138 transitions, 284 flow [2022-11-20 11:58:10,240 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:58:10,252 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;@fc71ea4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:58:10,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 11:58:10,296 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-11-20 11:58:10,296 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:58:10,297 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:10,298 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] [2022-11-20 11:58:10,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 11:58:10,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:10,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2044914916, now seen corresponding path program 1 times [2022-11-20 11:58:10,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:10,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855190556] [2022-11-20 11:58:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:10,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:10,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:10,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855190556] [2022-11-20 11:58:10,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855190556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:10,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:10,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:10,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378702918] [2022-11-20 11:58:10,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:10,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:10,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:11,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:11,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:11,026 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 141 [2022-11-20 11:58:11,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 138 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:11,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 141 [2022-11-20 11:58:11,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:11,182 INFO L130 PetriNetUnfolder]: 3/128 cut-off events. [2022-11-20 11:58:11,182 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-20 11:58:11,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 128 events. 3/128 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 160 event pairs, 0 based on Foata normal form. 40/157 useless extension candidates. Maximal degree in co-relation 83. Up to 7 conditions per place. [2022-11-20 11:58:11,186 INFO L137 encePairwiseOnDemand]: 123/141 looper letters, 10 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2022-11-20 11:58:11,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 126 transitions, 288 flow [2022-11-20 11:58:11,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:58:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:58:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 622 transitions. [2022-11-20 11:58:11,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8822695035460993 [2022-11-20 11:58:11,219 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 622 transitions. [2022-11-20 11:58:11,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 622 transitions. [2022-11-20 11:58:11,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:11,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 622 transitions. [2022-11-20 11:58:11,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.4) internal successors, (622), 5 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,248 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,251 INFO L175 Difference]: Start difference. First operand has 127 places, 138 transitions, 284 flow. Second operand 5 states and 622 transitions. [2022-11-20 11:58:11,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 126 transitions, 288 flow [2022-11-20 11:58:11,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 126 transitions, 288 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:58:11,263 INFO L231 Difference]: Finished difference. Result has 129 places, 124 transitions, 268 flow [2022-11-20 11:58:11,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=129, PETRI_TRANSITIONS=124} [2022-11-20 11:58:11,273 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 2 predicate places. [2022-11-20 11:58:11,273 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 124 transitions, 268 flow [2022-11-20 11:58:11,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:11,276 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] [2022-11-20 11:58:11,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:58:11,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 11:58:11,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:11,280 INFO L85 PathProgramCache]: Analyzing trace with hash -563166321, now seen corresponding path program 1 times [2022-11-20 11:58:11,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:11,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084465697] [2022-11-20 11:58:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:11,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:11,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:11,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084465697] [2022-11-20 11:58:11,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084465697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:11,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:11,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:11,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002725379] [2022-11-20 11:58:11,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:11,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:11,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:11,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:11,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:11,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 141 [2022-11-20 11:58:11,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 124 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:11,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 141 [2022-11-20 11:58:11,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:11,547 INFO L130 PetriNetUnfolder]: 14/215 cut-off events. [2022-11-20 11:58:11,547 INFO L131 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-11-20 11:58:11,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 215 events. 14/215 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 629 event pairs, 4 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 190. Up to 12 conditions per place. [2022-11-20 11:58:11,550 INFO L137 encePairwiseOnDemand]: 135/141 looper letters, 10 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2022-11-20 11:58:11,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 125 transitions, 298 flow [2022-11-20 11:58:11,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:58:11,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:58:11,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 596 transitions. [2022-11-20 11:58:11,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8453900709219858 [2022-11-20 11:58:11,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 596 transitions. [2022-11-20 11:58:11,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 596 transitions. [2022-11-20 11:58:11,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:11,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 596 transitions. [2022-11-20 11:58:11,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.2) internal successors, (596), 5 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,558 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 141.0) internal successors, (846), 6 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,558 INFO L175 Difference]: Start difference. First operand has 129 places, 124 transitions, 268 flow. Second operand 5 states and 596 transitions. [2022-11-20 11:58:11,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 125 transitions, 298 flow [2022-11-20 11:58:11,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 125 transitions, 290 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:58:11,562 INFO L231 Difference]: Finished difference. Result has 127 places, 122 transitions, 264 flow [2022-11-20 11:58:11,563 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=127, PETRI_TRANSITIONS=122} [2022-11-20 11:58:11,563 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, 0 predicate places. [2022-11-20 11:58:11,564 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 264 flow [2022-11-20 11:58:11,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,564 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:11,565 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:11,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:58:11,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 11:58:11,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1855156260, now seen corresponding path program 1 times [2022-11-20 11:58:11,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:11,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797803446] [2022-11-20 11:58:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:11,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:58:11,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:58:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:58:11,636 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:58:11,637 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:58:11,638 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-20 11:58:11,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-20 11:58:11,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-20 11:58:11,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-20 11:58:11,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-20 11:58:11,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-20 11:58:11,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-20 11:58:11,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-20 11:58:11,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-20 11:58:11,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-20 11:58:11,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-20 11:58:11,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-20 11:58:11,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-20 11:58:11,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:58:11,644 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-20 11:58:11,647 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:58:11,647 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 11:58:11,674 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:58:11,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 179 transitions, 376 flow [2022-11-20 11:58:11,725 INFO L130 PetriNetUnfolder]: 40/304 cut-off events. [2022-11-20 11:58:11,725 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 11:58:11,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 304 events. 40/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 888 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 187. Up to 9 conditions per place. [2022-11-20 11:58:11,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 179 transitions, 376 flow [2022-11-20 11:58:11,733 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 179 transitions, 376 flow [2022-11-20 11:58:11,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:58:11,736 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;@fc71ea4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:58:11,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 11:58:11,745 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-11-20 11:58:11,746 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:58:11,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:11,746 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] [2022-11-20 11:58:11,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:58:11,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:11,747 INFO L85 PathProgramCache]: Analyzing trace with hash -690589536, now seen corresponding path program 1 times [2022-11-20 11:58:11,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:11,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237136569] [2022-11-20 11:58:11,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:11,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:11,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:11,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237136569] [2022-11-20 11:58:11,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237136569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:11,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:11,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:11,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252655897] [2022-11-20 11:58:11,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:11,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:11,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:11,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:11,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:11,852 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-11-20 11:58:11,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 179 transitions, 376 flow. Second operand has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:11,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-11-20 11:58:11,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:11,961 INFO L130 PetriNetUnfolder]: 8/246 cut-off events. [2022-11-20 11:58:11,962 INFO L131 PetriNetUnfolder]: For 14/46 co-relation queries the response was YES. [2022-11-20 11:58:11,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 246 events. 8/246 cut-off events. For 14/46 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 631 event pairs, 0 based on Foata normal form. 124/340 useless extension candidates. Maximal degree in co-relation 159. Up to 21 conditions per place. [2022-11-20 11:58:11,964 INFO L137 encePairwiseOnDemand]: 155/179 looper letters, 19 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2022-11-20 11:58:11,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 168 transitions, 400 flow [2022-11-20 11:58:11,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:58:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:58:11,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 787 transitions. [2022-11-20 11:58:11,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8793296089385475 [2022-11-20 11:58:11,967 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 787 transitions. [2022-11-20 11:58:11,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 787 transitions. [2022-11-20 11:58:11,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:11,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 787 transitions. [2022-11-20 11:58:11,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.4) internal successors, (787), 5 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,973 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,974 INFO L175 Difference]: Start difference. First operand has 162 places, 179 transitions, 376 flow. Second operand 5 states and 787 transitions. [2022-11-20 11:58:11,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 168 transitions, 400 flow [2022-11-20 11:58:11,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 168 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:58:11,978 INFO L231 Difference]: Finished difference. Result has 168 places, 164 transitions, 372 flow [2022-11-20 11:58:11,979 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=168, PETRI_TRANSITIONS=164} [2022-11-20 11:58:11,980 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 6 predicate places. [2022-11-20 11:58:11,980 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 164 transitions, 372 flow [2022-11-20 11:58:11,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:11,981 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:11,981 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] [2022-11-20 11:58:11,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:58:11,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:58:11,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:11,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1355404243, now seen corresponding path program 1 times [2022-11-20 11:58:11,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:11,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206962175] [2022-11-20 11:58:11,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:11,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:12,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:12,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206962175] [2022-11-20 11:58:12,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206962175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:12,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:12,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:12,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063519212] [2022-11-20 11:58:12,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:12,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:12,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:12,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:12,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:12,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 179 [2022-11-20 11:58:12,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 164 transitions, 372 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:12,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:12,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 179 [2022-11-20 11:58:12,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:12,404 INFO L130 PetriNetUnfolder]: 176/1039 cut-off events. [2022-11-20 11:58:12,404 INFO L131 PetriNetUnfolder]: For 108/127 co-relation queries the response was YES. [2022-11-20 11:58:12,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1434 conditions, 1039 events. 176/1039 cut-off events. For 108/127 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7514 event pairs, 43 based on Foata normal form. 0/914 useless extension candidates. Maximal degree in co-relation 1362. Up to 207 conditions per place. [2022-11-20 11:58:12,418 INFO L137 encePairwiseOnDemand]: 172/179 looper letters, 36 selfloop transitions, 6 changer transitions 0/187 dead transitions. [2022-11-20 11:58:12,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 187 transitions, 520 flow [2022-11-20 11:58:12,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:58:12,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:58:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 756 transitions. [2022-11-20 11:58:12,421 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8446927374301676 [2022-11-20 11:58:12,422 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 756 transitions. [2022-11-20 11:58:12,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 756 transitions. [2022-11-20 11:58:12,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:12,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 756 transitions. [2022-11-20 11:58:12,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.2) internal successors, (756), 5 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:12,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:12,429 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:12,429 INFO L175 Difference]: Start difference. First operand has 168 places, 164 transitions, 372 flow. Second operand 5 states and 756 transitions. [2022-11-20 11:58:12,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 187 transitions, 520 flow [2022-11-20 11:58:12,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 518 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:58:12,435 INFO L231 Difference]: Finished difference. Result has 174 places, 169 transitions, 419 flow [2022-11-20 11:58:12,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=419, PETRI_PLACES=174, PETRI_TRANSITIONS=169} [2022-11-20 11:58:12,437 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 12 predicate places. [2022-11-20 11:58:12,437 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 169 transitions, 419 flow [2022-11-20 11:58:12,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:12,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:12,438 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:12,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:58:12,439 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:58:12,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:12,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2022151291, now seen corresponding path program 1 times [2022-11-20 11:58:12,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:12,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430463259] [2022-11-20 11:58:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:58:12,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:12,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430463259] [2022-11-20 11:58:12,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430463259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:12,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:12,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:12,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052678149] [2022-11-20 11:58:12,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:12,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:12,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:12,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:12,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:12,544 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-11-20 11:58:12,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 169 transitions, 419 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:12,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:12,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-11-20 11:58:12,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:12,743 INFO L130 PetriNetUnfolder]: 11/372 cut-off events. [2022-11-20 11:58:12,743 INFO L131 PetriNetUnfolder]: For 45/107 co-relation queries the response was YES. [2022-11-20 11:58:12,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 372 events. 11/372 cut-off events. For 45/107 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1291 event pairs, 0 based on Foata normal form. 16/348 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2022-11-20 11:58:12,751 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 11 selfloop transitions, 8 changer transitions 0/169 dead transitions. [2022-11-20 11:58:12,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 169 transitions, 455 flow [2022-11-20 11:58:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:58:12,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:58:12,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2022-11-20 11:58:12,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.829050279329609 [2022-11-20 11:58:12,754 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2022-11-20 11:58:12,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2022-11-20 11:58:12,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:12,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2022-11-20 11:58:12,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:12,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:12,767 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:12,767 INFO L175 Difference]: Start difference. First operand has 174 places, 169 transitions, 419 flow. Second operand 5 states and 742 transitions. [2022-11-20 11:58:12,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 169 transitions, 455 flow [2022-11-20 11:58:12,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 169 transitions, 452 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:58:12,776 INFO L231 Difference]: Finished difference. Result has 177 places, 169 transitions, 436 flow [2022-11-20 11:58:12,777 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=436, PETRI_PLACES=177, PETRI_TRANSITIONS=169} [2022-11-20 11:58:12,781 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 15 predicate places. [2022-11-20 11:58:12,781 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 169 transitions, 436 flow [2022-11-20 11:58:12,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:12,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:12,782 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:12,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:58:12,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:58:12,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1737819882, now seen corresponding path program 1 times [2022-11-20 11:58:12,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:12,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502893815] [2022-11-20 11:58:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:12,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:12,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:12,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502893815] [2022-11-20 11:58:12,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502893815] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:58:12,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488491162] [2022-11-20 11:58:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:12,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:58:12,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:58:12,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:58:12,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:58:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:58:13,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:58:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:13,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:58:13,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488491162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:13,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:58:13,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:58:13,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807547519] [2022-11-20 11:58:13,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:13,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:58:13,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:13,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:58:13,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:58:13,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-11-20 11:58:13,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 169 transitions, 436 flow. Second operand has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:13,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:13,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-11-20 11:58:13,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:13,424 INFO L130 PetriNetUnfolder]: 11/371 cut-off events. [2022-11-20 11:58:13,424 INFO L131 PetriNetUnfolder]: For 55/112 co-relation queries the response was YES. [2022-11-20 11:58:13,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 371 events. 11/371 cut-off events. For 55/112 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1290 event pairs, 0 based on Foata normal form. 9/340 useless extension candidates. Maximal degree in co-relation 302. Up to 19 conditions per place. [2022-11-20 11:58:13,429 INFO L137 encePairwiseOnDemand]: 174/179 looper letters, 15 selfloop transitions, 6 changer transitions 0/171 dead transitions. [2022-11-20 11:58:13,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 171 transitions, 480 flow [2022-11-20 11:58:13,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:58:13,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:58:13,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1037 transitions. [2022-11-20 11:58:13,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8276137270550679 [2022-11-20 11:58:13,433 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1037 transitions. [2022-11-20 11:58:13,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1037 transitions. [2022-11-20 11:58:13,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:13,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1037 transitions. [2022-11-20 11:58:13,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:13,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:13,440 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:13,440 INFO L175 Difference]: Start difference. First operand has 177 places, 169 transitions, 436 flow. Second operand 7 states and 1037 transitions. [2022-11-20 11:58:13,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 171 transitions, 480 flow [2022-11-20 11:58:13,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 171 transitions, 468 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:58:13,448 INFO L231 Difference]: Finished difference. Result has 179 places, 168 transitions, 432 flow [2022-11-20 11:58:13,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=432, PETRI_PLACES=179, PETRI_TRANSITIONS=168} [2022-11-20 11:58:13,450 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 17 predicate places. [2022-11-20 11:58:13,451 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 168 transitions, 432 flow [2022-11-20 11:58:13,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:13,452 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:13,452 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] [2022-11-20 11:58:13,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:58:13,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:58:13,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:58:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:13,659 INFO L85 PathProgramCache]: Analyzing trace with hash 933344058, now seen corresponding path program 1 times [2022-11-20 11:58:13,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:13,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117627338] [2022-11-20 11:58:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:13,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:13,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:13,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117627338] [2022-11-20 11:58:13,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117627338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:13,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:13,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:58:13,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544168711] [2022-11-20 11:58:13,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:13,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:58:13,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:58:13,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:58:13,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 179 [2022-11-20 11:58:13,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 168 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:13,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:13,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 179 [2022-11-20 11:58:13,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:14,338 INFO L130 PetriNetUnfolder]: 347/1655 cut-off events. [2022-11-20 11:58:14,338 INFO L131 PetriNetUnfolder]: For 330/370 co-relation queries the response was YES. [2022-11-20 11:58:14,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2564 conditions, 1655 events. 347/1655 cut-off events. For 330/370 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13696 event pairs, 57 based on Foata normal form. 1/1476 useless extension candidates. Maximal degree in co-relation 2255. Up to 237 conditions per place. [2022-11-20 11:58:14,360 INFO L137 encePairwiseOnDemand]: 168/179 looper letters, 60 selfloop transitions, 19 changer transitions 0/218 dead transitions. [2022-11-20 11:58:14,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 218 transitions, 740 flow [2022-11-20 11:58:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:58:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:58:14,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1314 transitions. [2022-11-20 11:58:14,365 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8156424581005587 [2022-11-20 11:58:14,365 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1314 transitions. [2022-11-20 11:58:14,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1314 transitions. [2022-11-20 11:58:14,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:14,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1314 transitions. [2022-11-20 11:58:14,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 146.0) internal successors, (1314), 9 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:14,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:14,373 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:14,373 INFO L175 Difference]: Start difference. First operand has 179 places, 168 transitions, 432 flow. Second operand 9 states and 1314 transitions. [2022-11-20 11:58:14,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 218 transitions, 740 flow [2022-11-20 11:58:14,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 218 transitions, 729 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 11:58:14,380 INFO L231 Difference]: Finished difference. Result has 188 places, 180 transitions, 547 flow [2022-11-20 11:58:14,380 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=547, PETRI_PLACES=188, PETRI_TRANSITIONS=180} [2022-11-20 11:58:14,381 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 26 predicate places. [2022-11-20 11:58:14,382 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 180 transitions, 547 flow [2022-11-20 11:58:14,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:14,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:14,383 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] [2022-11-20 11:58:14,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:58:14,383 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:58:14,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:14,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1131104693, now seen corresponding path program 1 times [2022-11-20 11:58:14,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:14,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483702510] [2022-11-20 11:58:14,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:14,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:14,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:14,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:14,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483702510] [2022-11-20 11:58:14,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483702510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:14,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:14,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:58:14,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36141463] [2022-11-20 11:58:14,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:14,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:58:14,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:14,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:58:14,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:58:14,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 179 [2022-11-20 11:58:14,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 180 transitions, 547 flow. Second operand has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:14,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:14,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 179 [2022-11-20 11:58:14,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:15,022 INFO L130 PetriNetUnfolder]: 360/1756 cut-off events. [2022-11-20 11:58:15,022 INFO L131 PetriNetUnfolder]: For 1064/1118 co-relation queries the response was YES. [2022-11-20 11:58:15,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3109 conditions, 1756 events. 360/1756 cut-off events. For 1064/1118 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14450 event pairs, 78 based on Foata normal form. 30/1588 useless extension candidates. Maximal degree in co-relation 2285. Up to 289 conditions per place. [2022-11-20 11:58:15,048 INFO L137 encePairwiseOnDemand]: 168/179 looper letters, 65 selfloop transitions, 19 changer transitions 0/223 dead transitions. [2022-11-20 11:58:15,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 223 transitions, 882 flow [2022-11-20 11:58:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:58:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:58:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1316 transitions. [2022-11-20 11:58:15,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8168839230291745 [2022-11-20 11:58:15,052 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1316 transitions. [2022-11-20 11:58:15,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1316 transitions. [2022-11-20 11:58:15,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:15,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1316 transitions. [2022-11-20 11:58:15,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 146.22222222222223) internal successors, (1316), 9 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) [2022-11-20 11:58:15,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:15,059 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:15,060 INFO L175 Difference]: Start difference. First operand has 188 places, 180 transitions, 547 flow. Second operand 9 states and 1316 transitions. [2022-11-20 11:58:15,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 223 transitions, 882 flow [2022-11-20 11:58:15,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 223 transitions, 841 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-20 11:58:15,070 INFO L231 Difference]: Finished difference. Result has 194 places, 184 transitions, 594 flow [2022-11-20 11:58:15,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=594, PETRI_PLACES=194, PETRI_TRANSITIONS=184} [2022-11-20 11:58:15,071 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 32 predicate places. [2022-11-20 11:58:15,071 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 184 transitions, 594 flow [2022-11-20 11:58:15,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:15,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:15,072 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:15,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:58:15,072 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:58:15,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:15,073 INFO L85 PathProgramCache]: Analyzing trace with hash -469817800, now seen corresponding path program 1 times [2022-11-20 11:58:15,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:15,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126545062] [2022-11-20 11:58:15,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:15,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:58:15,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:15,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126545062] [2022-11-20 11:58:15,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126545062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:15,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:15,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:15,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031503297] [2022-11-20 11:58:15,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:15,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:15,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:15,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:15,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:15,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 179 [2022-11-20 11:58:15,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 184 transitions, 594 flow. Second operand has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:15,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:15,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 179 [2022-11-20 11:58:15,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:15,522 INFO L130 PetriNetUnfolder]: 268/1635 cut-off events. [2022-11-20 11:58:15,522 INFO L131 PetriNetUnfolder]: For 1182/1259 co-relation queries the response was YES. [2022-11-20 11:58:15,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 1635 events. 268/1635 cut-off events. For 1182/1259 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 13779 event pairs, 61 based on Foata normal form. 22/1507 useless extension candidates. Maximal degree in co-relation 2715. Up to 362 conditions per place. [2022-11-20 11:58:15,545 INFO L137 encePairwiseOnDemand]: 172/179 looper letters, 55 selfloop transitions, 7 changer transitions 0/210 dead transitions. [2022-11-20 11:58:15,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 210 transitions, 856 flow [2022-11-20 11:58:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:58:15,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:58:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 754 transitions. [2022-11-20 11:58:15,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8424581005586592 [2022-11-20 11:58:15,548 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 754 transitions. [2022-11-20 11:58:15,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 754 transitions. [2022-11-20 11:58:15,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:15,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 754 transitions. [2022-11-20 11:58:15,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:15,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:15,554 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:15,554 INFO L175 Difference]: Start difference. First operand has 194 places, 184 transitions, 594 flow. Second operand 5 states and 754 transitions. [2022-11-20 11:58:15,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 210 transitions, 856 flow [2022-11-20 11:58:15,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 210 transitions, 828 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 11:58:15,564 INFO L231 Difference]: Finished difference. Result has 197 places, 187 transitions, 624 flow [2022-11-20 11:58:15,565 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=624, PETRI_PLACES=197, PETRI_TRANSITIONS=187} [2022-11-20 11:58:15,566 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 35 predicate places. [2022-11-20 11:58:15,566 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 187 transitions, 624 flow [2022-11-20 11:58:15,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:15,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:15,567 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:15,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:58:15,567 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 11:58:15,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash 372775217, now seen corresponding path program 1 times [2022-11-20 11:58:15,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:15,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862593269] [2022-11-20 11:58:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:15,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:58:15,591 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:58:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:58:15,621 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:58:15,621 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:58:15,622 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-20 11:58:15,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-20 11:58:15,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-20 11:58:15,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-20 11:58:15,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-20 11:58:15,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-20 11:58:15,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-20 11:58:15,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-20 11:58:15,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-20 11:58:15,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-20 11:58:15,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-20 11:58:15,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-20 11:58:15,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-20 11:58:15,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-20 11:58:15,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-20 11:58:15,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-20 11:58:15,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-20 11:58:15,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:58:15,625 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:15,625 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:58:15,625 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 11:58:15,663 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:58:15,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 217 transitions, 464 flow [2022-11-20 11:58:15,759 INFO L130 PetriNetUnfolder]: 62/464 cut-off events. [2022-11-20 11:58:15,759 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 11:58:15,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 464 events. 62/464 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1556 event pairs, 1 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 312. Up to 16 conditions per place. [2022-11-20 11:58:15,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 217 transitions, 464 flow [2022-11-20 11:58:15,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 217 transitions, 464 flow [2022-11-20 11:58:15,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:58:15,770 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;@fc71ea4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:58:15,770 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-20 11:58:15,775 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-11-20 11:58:15,775 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:58:15,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:15,776 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] [2022-11-20 11:58:15,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 11:58:15,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1623194396, now seen corresponding path program 1 times [2022-11-20 11:58:15,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:15,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276249182] [2022-11-20 11:58:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:15,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:15,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:15,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276249182] [2022-11-20 11:58:15,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276249182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:15,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:15,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:15,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300572557] [2022-11-20 11:58:15,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:15,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:15,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:15,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:15,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:15,831 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 217 [2022-11-20 11:58:15,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 217 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:15,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:15,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 217 [2022-11-20 11:58:15,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:15,940 INFO L130 PetriNetUnfolder]: 16/391 cut-off events. [2022-11-20 11:58:15,941 INFO L131 PetriNetUnfolder]: For 76/184 co-relation queries the response was YES. [2022-11-20 11:58:15,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 391 events. 16/391 cut-off events. For 76/184 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1297 event pairs, 1 based on Foata normal form. 306/644 useless extension candidates. Maximal degree in co-relation 287. Up to 40 conditions per place. [2022-11-20 11:58:15,945 INFO L137 encePairwiseOnDemand]: 187/217 looper letters, 21 selfloop transitions, 4 changer transitions 0/200 dead transitions. [2022-11-20 11:58:15,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 200 transitions, 480 flow [2022-11-20 11:58:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:58:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:58:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 945 transitions. [2022-11-20 11:58:15,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8709677419354839 [2022-11-20 11:58:15,948 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 945 transitions. [2022-11-20 11:58:15,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 945 transitions. [2022-11-20 11:58:15,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:15,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 945 transitions. [2022-11-20 11:58:15,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:15,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:15,954 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:15,954 INFO L175 Difference]: Start difference. First operand has 195 places, 217 transitions, 464 flow. Second operand 5 states and 945 transitions. [2022-11-20 11:58:15,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 200 transitions, 480 flow [2022-11-20 11:58:15,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 200 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:58:15,959 INFO L231 Difference]: Finished difference. Result has 201 places, 196 transitions, 448 flow [2022-11-20 11:58:15,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=448, PETRI_PLACES=201, PETRI_TRANSITIONS=196} [2022-11-20 11:58:15,961 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 6 predicate places. [2022-11-20 11:58:15,961 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 196 transitions, 448 flow [2022-11-20 11:58:15,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:15,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:15,962 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] [2022-11-20 11:58:15,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:58:15,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 11:58:15,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:15,963 INFO L85 PathProgramCache]: Analyzing trace with hash 2105030743, now seen corresponding path program 1 times [2022-11-20 11:58:15,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:15,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569805485] [2022-11-20 11:58:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:15,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:16,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:16,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569805485] [2022-11-20 11:58:16,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569805485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:16,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:16,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:16,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318766352] [2022-11-20 11:58:16,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:16,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:16,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:16,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:16,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:16,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 217 [2022-11-20 11:58:16,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 196 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:16,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:16,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 217 [2022-11-20 11:58:16,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:17,955 INFO L130 PetriNetUnfolder]: 1991/9004 cut-off events. [2022-11-20 11:58:17,956 INFO L131 PetriNetUnfolder]: For 1461/1606 co-relation queries the response was YES. [2022-11-20 11:58:18,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12660 conditions, 9004 events. 1991/9004 cut-off events. For 1461/1606 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 103809 event pairs, 1115 based on Foata normal form. 1/7618 useless extension candidates. Maximal degree in co-relation 12587. Up to 2017 conditions per place. [2022-11-20 11:58:18,087 INFO L137 encePairwiseOnDemand]: 209/217 looper letters, 52 selfloop transitions, 8 changer transitions 0/231 dead transitions. [2022-11-20 11:58:18,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 231 transitions, 680 flow [2022-11-20 11:58:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:58:18,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:58:18,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 904 transitions. [2022-11-20 11:58:18,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8331797235023042 [2022-11-20 11:58:18,091 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 904 transitions. [2022-11-20 11:58:18,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 904 transitions. [2022-11-20 11:58:18,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:18,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 904 transitions. [2022-11-20 11:58:18,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.8) internal successors, (904), 5 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:18,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:18,097 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:18,098 INFO L175 Difference]: Start difference. First operand has 201 places, 196 transitions, 448 flow. Second operand 5 states and 904 transitions. [2022-11-20 11:58:18,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 231 transitions, 680 flow [2022-11-20 11:58:18,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 231 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:58:18,105 INFO L231 Difference]: Finished difference. Result has 207 places, 203 transitions, 510 flow [2022-11-20 11:58:18,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=207, PETRI_TRANSITIONS=203} [2022-11-20 11:58:18,106 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 12 predicate places. [2022-11-20 11:58:18,106 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 203 transitions, 510 flow [2022-11-20 11:58:18,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:18,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:18,107 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:18,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:58:18,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 11:58:18,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:18,108 INFO L85 PathProgramCache]: Analyzing trace with hash -162827603, now seen corresponding path program 1 times [2022-11-20 11:58:18,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:18,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112814823] [2022-11-20 11:58:18,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:18,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:58:18,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:18,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112814823] [2022-11-20 11:58:18,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112814823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:18,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:18,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:18,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142479085] [2022-11-20 11:58:18,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:18,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:18,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:18,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:18,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:18,170 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 217 [2022-11-20 11:58:18,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 203 transitions, 510 flow. Second operand has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:18,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:18,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 217 [2022-11-20 11:58:18,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:18,446 INFO L130 PetriNetUnfolder]: 46/894 cut-off events. [2022-11-20 11:58:18,446 INFO L131 PetriNetUnfolder]: For 291/733 co-relation queries the response was YES. [2022-11-20 11:58:18,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 894 events. 46/894 cut-off events. For 291/733 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5290 event pairs, 7 based on Foata normal form. 41/815 useless extension candidates. Maximal degree in co-relation 783. Up to 52 conditions per place. [2022-11-20 11:58:18,459 INFO L137 encePairwiseOnDemand]: 211/217 looper letters, 13 selfloop transitions, 8 changer transitions 0/203 dead transitions. [2022-11-20 11:58:18,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 203 transitions, 550 flow [2022-11-20 11:58:18,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:58:18,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:58:18,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 894 transitions. [2022-11-20 11:58:18,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.823963133640553 [2022-11-20 11:58:18,462 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 894 transitions. [2022-11-20 11:58:18,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 894 transitions. [2022-11-20 11:58:18,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:18,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 894 transitions. [2022-11-20 11:58:18,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.8) internal successors, (894), 5 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:18,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:18,468 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:18,468 INFO L175 Difference]: Start difference. First operand has 207 places, 203 transitions, 510 flow. Second operand 5 states and 894 transitions. [2022-11-20 11:58:18,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 203 transitions, 550 flow [2022-11-20 11:58:18,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 203 transitions, 546 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:58:18,473 INFO L231 Difference]: Finished difference. Result has 210 places, 203 transitions, 526 flow [2022-11-20 11:58:18,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=526, PETRI_PLACES=210, PETRI_TRANSITIONS=203} [2022-11-20 11:58:18,474 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 15 predicate places. [2022-11-20 11:58:18,474 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 203 transitions, 526 flow [2022-11-20 11:58:18,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:18,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:18,475 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:18,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:58:18,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 11:58:18,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:18,476 INFO L85 PathProgramCache]: Analyzing trace with hash -752687717, now seen corresponding path program 1 times [2022-11-20 11:58:18,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:18,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732384627] [2022-11-20 11:58:18,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:18,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:18,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:18,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732384627] [2022-11-20 11:58:18,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732384627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:58:18,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650917295] [2022-11-20 11:58:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:18,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:58:18,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:58:18,571 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:58:18,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:58:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:18,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:58:18,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:58:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:18,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:58:18,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650917295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:18,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:58:18,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:58:18,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556883663] [2022-11-20 11:58:18,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:18,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:58:18,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:18,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:58:18,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:58:18,770 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 217 [2022-11-20 11:58:18,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 203 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 177.66666666666666) internal successors, (1066), 6 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:18,772 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:18,772 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 217 [2022-11-20 11:58:18,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:18,991 INFO L130 PetriNetUnfolder]: 46/892 cut-off events. [2022-11-20 11:58:18,991 INFO L131 PetriNetUnfolder]: For 293/694 co-relation queries the response was YES. [2022-11-20 11:58:19,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1136 conditions, 892 events. 46/892 cut-off events. For 293/694 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5290 event pairs, 7 based on Foata normal form. 18/790 useless extension candidates. Maximal degree in co-relation 783. Up to 58 conditions per place. [2022-11-20 11:58:19,008 INFO L137 encePairwiseOnDemand]: 212/217 looper letters, 17 selfloop transitions, 6 changer transitions 0/205 dead transitions. [2022-11-20 11:58:19,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 205 transitions, 574 flow [2022-11-20 11:58:19,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:58:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:58:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1249 transitions. [2022-11-20 11:58:19,012 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8222514812376563 [2022-11-20 11:58:19,012 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1249 transitions. [2022-11-20 11:58:19,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1249 transitions. [2022-11-20 11:58:19,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:19,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1249 transitions. [2022-11-20 11:58:19,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.42857142857142) internal successors, (1249), 7 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:19,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:19,020 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:19,021 INFO L175 Difference]: Start difference. First operand has 210 places, 203 transitions, 526 flow. Second operand 7 states and 1249 transitions. [2022-11-20 11:58:19,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 205 transitions, 574 flow [2022-11-20 11:58:19,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 205 transitions, 562 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:58:19,056 INFO L231 Difference]: Finished difference. Result has 212 places, 202 transitions, 522 flow [2022-11-20 11:58:19,056 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=522, PETRI_PLACES=212, PETRI_TRANSITIONS=202} [2022-11-20 11:58:19,057 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 17 predicate places. [2022-11-20 11:58:19,057 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 202 transitions, 522 flow [2022-11-20 11:58:19,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.66666666666666) internal successors, (1066), 6 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:19,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:19,057 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] [2022-11-20 11:58:19,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:58:19,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:58:19,258 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 11:58:19,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:19,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1891161047, now seen corresponding path program 1 times [2022-11-20 11:58:19,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:19,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232035530] [2022-11-20 11:58:19,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:19,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:19,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:19,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232035530] [2022-11-20 11:58:19,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232035530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:19,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:19,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:58:19,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268009512] [2022-11-20 11:58:19,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:19,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:58:19,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:19,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:58:19,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:58:19,354 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 217 [2022-11-20 11:58:19,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 202 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 164.5) internal successors, (987), 6 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:19,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:19,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 217 [2022-11-20 11:58:19,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:22,429 INFO L130 PetriNetUnfolder]: 4149/15247 cut-off events. [2022-11-20 11:58:22,429 INFO L131 PetriNetUnfolder]: For 5079/5442 co-relation queries the response was YES. [2022-11-20 11:58:22,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24511 conditions, 15247 events. 4149/15247 cut-off events. For 5079/5442 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 188160 event pairs, 1144 based on Foata normal form. 10/13227 useless extension candidates. Maximal degree in co-relation 8507. Up to 2727 conditions per place. [2022-11-20 11:58:22,676 INFO L137 encePairwiseOnDemand]: 204/217 looper letters, 100 selfloop transitions, 27 changer transitions 0/292 dead transitions. [2022-11-20 11:58:22,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 292 transitions, 1102 flow [2022-11-20 11:58:22,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:58:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:58:22,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1596 transitions. [2022-11-20 11:58:22,680 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8172043010752689 [2022-11-20 11:58:22,681 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1596 transitions. [2022-11-20 11:58:22,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1596 transitions. [2022-11-20 11:58:22,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:22,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1596 transitions. [2022-11-20 11:58:22,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 177.33333333333334) internal successors, (1596), 9 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:22,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:22,707 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:22,707 INFO L175 Difference]: Start difference. First operand has 212 places, 202 transitions, 522 flow. Second operand 9 states and 1596 transitions. [2022-11-20 11:58:22,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 292 transitions, 1102 flow [2022-11-20 11:58:22,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 292 transitions, 1091 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 11:58:22,719 INFO L231 Difference]: Finished difference. Result has 221 places, 221 transitions, 715 flow [2022-11-20 11:58:22,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=715, PETRI_PLACES=221, PETRI_TRANSITIONS=221} [2022-11-20 11:58:22,721 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 26 predicate places. [2022-11-20 11:58:22,721 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 221 transitions, 715 flow [2022-11-20 11:58:22,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.5) internal successors, (987), 6 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:22,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:22,722 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] [2022-11-20 11:58:22,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:58:22,722 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 11:58:22,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:22,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1503548817, now seen corresponding path program 1 times [2022-11-20 11:58:22,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:22,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6130024] [2022-11-20 11:58:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:22,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:22,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:22,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:22,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6130024] [2022-11-20 11:58:22,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6130024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:22,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:22,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:58:22,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710987678] [2022-11-20 11:58:22,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:22,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:58:22,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:22,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:58:22,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:58:22,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 217 [2022-11-20 11:58:22,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 221 transitions, 715 flow. Second operand has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:22,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:22,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 217 [2022-11-20 11:58:22,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:25,758 INFO L130 PetriNetUnfolder]: 4153/14735 cut-off events. [2022-11-20 11:58:25,758 INFO L131 PetriNetUnfolder]: For 14384/14840 co-relation queries the response was YES. [2022-11-20 11:58:25,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28880 conditions, 14735 events. 4153/14735 cut-off events. For 14384/14840 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 179841 event pairs, 1116 based on Foata normal form. 191/13284 useless extension candidates. Maximal degree in co-relation 19433. Up to 3119 conditions per place. [2022-11-20 11:58:25,965 INFO L137 encePairwiseOnDemand]: 204/217 looper letters, 107 selfloop transitions, 27 changer transitions 0/299 dead transitions. [2022-11-20 11:58:25,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 299 transitions, 1360 flow [2022-11-20 11:58:25,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:58:25,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:58:25,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1594 transitions. [2022-11-20 11:58:25,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8161802355350742 [2022-11-20 11:58:25,970 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1594 transitions. [2022-11-20 11:58:25,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1594 transitions. [2022-11-20 11:58:25,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:25,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1594 transitions. [2022-11-20 11:58:25,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 177.11111111111111) internal successors, (1594), 9 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:25,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:25,979 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:25,979 INFO L175 Difference]: Start difference. First operand has 221 places, 221 transitions, 715 flow. Second operand 9 states and 1594 transitions. [2022-11-20 11:58:25,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 299 transitions, 1360 flow [2022-11-20 11:58:26,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 299 transitions, 1293 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-20 11:58:26,016 INFO L231 Difference]: Finished difference. Result has 227 places, 229 transitions, 796 flow [2022-11-20 11:58:26,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=796, PETRI_PLACES=227, PETRI_TRANSITIONS=229} [2022-11-20 11:58:26,017 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 32 predicate places. [2022-11-20 11:58:26,017 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 229 transitions, 796 flow [2022-11-20 11:58:26,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:26,018 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:26,018 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:26,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:58:26,018 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 11:58:26,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:26,019 INFO L85 PathProgramCache]: Analyzing trace with hash -888474208, now seen corresponding path program 1 times [2022-11-20 11:58:26,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:26,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790258318] [2022-11-20 11:58:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:26,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:58:26,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:26,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790258318] [2022-11-20 11:58:26,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790258318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:26,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:26,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:26,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53119060] [2022-11-20 11:58:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:26,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:26,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:26,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 217 [2022-11-20 11:58:26,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 229 transitions, 796 flow. Second operand has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:26,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:26,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 217 [2022-11-20 11:58:26,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:29,401 INFO L130 PetriNetUnfolder]: 4490/18641 cut-off events. [2022-11-20 11:58:29,402 INFO L131 PetriNetUnfolder]: For 18317/19254 co-relation queries the response was YES. [2022-11-20 11:58:29,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36456 conditions, 18641 events. 4490/18641 cut-off events. For 18317/19254 co-relation queries the response was YES. Maximal size of possible extension queue 1006. Compared 243139 event pairs, 2484 based on Foata normal form. 246/16645 useless extension candidates. Maximal degree in co-relation 25566. Up to 4807 conditions per place. [2022-11-20 11:58:29,667 INFO L137 encePairwiseOnDemand]: 209/217 looper letters, 93 selfloop transitions, 11 changer transitions 0/278 dead transitions. [2022-11-20 11:58:29,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 278 transitions, 1312 flow [2022-11-20 11:58:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:58:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:58:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 902 transitions. [2022-11-20 11:58:29,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8313364055299539 [2022-11-20 11:58:29,670 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 902 transitions. [2022-11-20 11:58:29,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 902 transitions. [2022-11-20 11:58:29,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:29,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 902 transitions. [2022-11-20 11:58:29,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.4) internal successors, (902), 5 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:29,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:29,675 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:29,675 INFO L175 Difference]: Start difference. First operand has 227 places, 229 transitions, 796 flow. Second operand 5 states and 902 transitions. [2022-11-20 11:58:29,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 278 transitions, 1312 flow [2022-11-20 11:58:29,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 278 transitions, 1270 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 11:58:29,746 INFO L231 Difference]: Finished difference. Result has 230 places, 234 transitions, 846 flow [2022-11-20 11:58:29,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=846, PETRI_PLACES=230, PETRI_TRANSITIONS=234} [2022-11-20 11:58:29,747 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 35 predicate places. [2022-11-20 11:58:29,748 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 234 transitions, 846 flow [2022-11-20 11:58:29,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:29,748 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:29,749 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:29,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:58:29,749 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 11:58:29,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:29,750 INFO L85 PathProgramCache]: Analyzing trace with hash -560849818, now seen corresponding path program 1 times [2022-11-20 11:58:29,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:29,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632177494] [2022-11-20 11:58:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:29,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:58:29,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:29,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632177494] [2022-11-20 11:58:29,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632177494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:29,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:29,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:58:29,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046383403] [2022-11-20 11:58:29,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:29,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:58:29,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:29,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:58:29,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:58:29,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 217 [2022-11-20 11:58:29,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 234 transitions, 846 flow. Second operand has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:29,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:29,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 217 [2022-11-20 11:58:29,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:36,196 INFO L130 PetriNetUnfolder]: 9315/34752 cut-off events. [2022-11-20 11:58:36,196 INFO L131 PetriNetUnfolder]: For 33870/35920 co-relation queries the response was YES. [2022-11-20 11:58:36,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70547 conditions, 34752 events. 9315/34752 cut-off events. For 33870/35920 co-relation queries the response was YES. Maximal size of possible extension queue 2056. Compared 497568 event pairs, 2270 based on Foata normal form. 440/31997 useless extension candidates. Maximal degree in co-relation 63542. Up to 7057 conditions per place. [2022-11-20 11:58:36,999 INFO L137 encePairwiseOnDemand]: 204/217 looper letters, 149 selfloop transitions, 46 changer transitions 0/364 dead transitions. [2022-11-20 11:58:36,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 364 transitions, 1992 flow [2022-11-20 11:58:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:58:37,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:58:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1593 transitions. [2022-11-20 11:58:37,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.815668202764977 [2022-11-20 11:58:37,004 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1593 transitions. [2022-11-20 11:58:37,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1593 transitions. [2022-11-20 11:58:37,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:37,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1593 transitions. [2022-11-20 11:58:37,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 177.0) internal successors, (1593), 9 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:37,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:37,013 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:37,013 INFO L175 Difference]: Start difference. First operand has 230 places, 234 transitions, 846 flow. Second operand 9 states and 1593 transitions. [2022-11-20 11:58:37,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 364 transitions, 1992 flow [2022-11-20 11:58:37,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 364 transitions, 1986 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:58:37,214 INFO L231 Difference]: Finished difference. Result has 243 places, 269 transitions, 1330 flow [2022-11-20 11:58:37,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1330, PETRI_PLACES=243, PETRI_TRANSITIONS=269} [2022-11-20 11:58:37,215 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 48 predicate places. [2022-11-20 11:58:37,215 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 269 transitions, 1330 flow [2022-11-20 11:58:37,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:37,216 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:37,216 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:37,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:58:37,216 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 11:58:37,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:37,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1058863826, now seen corresponding path program 1 times [2022-11-20 11:58:37,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:37,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487588007] [2022-11-20 11:58:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:37,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:58:37,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:37,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487588007] [2022-11-20 11:58:37,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487588007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:37,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:37,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:58:37,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780563325] [2022-11-20 11:58:37,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:37,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:58:37,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:58:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:58:37,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 217 [2022-11-20 11:58:37,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 269 transitions, 1330 flow. Second operand has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:37,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:37,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 217 [2022-11-20 11:58:37,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:40,429 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([771] L939-7-->L939-8: Formula: (= |v_#pthreadsMutex_15| (store |v_#pthreadsMutex_16| |v_~#__global_lock~0.base_10| (store (select |v_#pthreadsMutex_16| |v_~#__global_lock~0.base_10|) |v_~#__global_lock~0.offset_10| 0))) InVars {#pthreadsMutex=|v_#pthreadsMutex_16|, ~#__global_lock~0.base=|v_~#__global_lock~0.base_10|, ~#__global_lock~0.offset=|v_~#__global_lock~0.offset_10|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_15|, ~#__global_lock~0.base=|v_~#__global_lock~0.base_10|, ~#__global_lock~0.offset=|v_~#__global_lock~0.offset_10|} AuxVars[] AssignedVars[#pthreadsMutex][162], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 451#(<= 1 ~global~0), 498#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 464#(= ~global~0 0), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), 472#true, Black: 210#(= ~global~0 0), Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 8#L941true, 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), 163#L939-8true, Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-20 11:58:40,429 INFO L383 tUnfolder$Statistics]: this new event has 151 ancestors and is cut-off event [2022-11-20 11:58:40,430 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-20 11:58:40,430 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-20 11:58:40,430 INFO L386 tUnfolder$Statistics]: existing Event has 151 ancestors and is cut-off event [2022-11-20 11:58:41,062 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([771] L939-7-->L939-8: Formula: (= |v_#pthreadsMutex_15| (store |v_#pthreadsMutex_16| |v_~#__global_lock~0.base_10| (store (select |v_#pthreadsMutex_16| |v_~#__global_lock~0.base_10|) |v_~#__global_lock~0.offset_10| 0))) InVars {#pthreadsMutex=|v_#pthreadsMutex_16|, ~#__global_lock~0.base=|v_~#__global_lock~0.base_10|, ~#__global_lock~0.offset=|v_~#__global_lock~0.offset_10|} OutVars{#pthreadsMutex=|v_#pthreadsMutex_15|, ~#__global_lock~0.base=|v_~#__global_lock~0.base_10|, ~#__global_lock~0.offset=|v_~#__global_lock~0.offset_10|} AuxVars[] AssignedVars[#pthreadsMutex][162], [t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, 498#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 451#(<= 1 ~global~0), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 464#(= ~global~0 0), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), 472#true, Black: 210#(= ~global~0 0), Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 163#L939-8true, t_funThread1of3ForFork0NotInUse]) [2022-11-20 11:58:41,062 INFO L383 tUnfolder$Statistics]: this new event has 162 ancestors and is cut-off event [2022-11-20 11:58:41,063 INFO L386 tUnfolder$Statistics]: existing Event has 162 ancestors and is cut-off event [2022-11-20 11:58:41,063 INFO L386 tUnfolder$Statistics]: existing Event has 162 ancestors and is cut-off event [2022-11-20 11:58:41,063 INFO L386 tUnfolder$Statistics]: existing Event has 115 ancestors and is cut-off event [2022-11-20 11:58:41,227 INFO L130 PetriNetUnfolder]: 2690/21238 cut-off events. [2022-11-20 11:58:41,227 INFO L131 PetriNetUnfolder]: For 12418/12956 co-relation queries the response was YES. [2022-11-20 11:58:41,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32976 conditions, 21238 events. 2690/21238 cut-off events. For 12418/12956 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 297925 event pairs, 1021 based on Foata normal form. 769/19475 useless extension candidates. Maximal degree in co-relation 25460. Up to 2888 conditions per place. [2022-11-20 11:58:41,417 INFO L137 encePairwiseOnDemand]: 207/217 looper letters, 53 selfloop transitions, 10 changer transitions 0/291 dead transitions. [2022-11-20 11:58:41,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 291 transitions, 1509 flow [2022-11-20 11:58:41,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:58:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:58:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 832 transitions. [2022-11-20 11:58:41,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7668202764976959 [2022-11-20 11:58:41,420 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 832 transitions. [2022-11-20 11:58:41,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 832 transitions. [2022-11-20 11:58:41,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:41,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 832 transitions. [2022-11-20 11:58:41,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.4) internal successors, (832), 5 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:41,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:41,425 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:41,425 INFO L175 Difference]: Start difference. First operand has 243 places, 269 transitions, 1330 flow. Second operand 5 states and 832 transitions. [2022-11-20 11:58:41,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 291 transitions, 1509 flow [2022-11-20 11:58:41,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 291 transitions, 1479 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-20 11:58:41,490 INFO L231 Difference]: Finished difference. Result has 245 places, 272 transitions, 1330 flow [2022-11-20 11:58:41,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1330, PETRI_PLACES=245, PETRI_TRANSITIONS=272} [2022-11-20 11:58:41,491 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 50 predicate places. [2022-11-20 11:58:41,491 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 272 transitions, 1330 flow [2022-11-20 11:58:41,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:41,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:41,492 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:41,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:58:41,493 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 11:58:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:41,493 INFO L85 PathProgramCache]: Analyzing trace with hash -206474376, now seen corresponding path program 1 times [2022-11-20 11:58:41,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:41,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202464183] [2022-11-20 11:58:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:41,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:58:41,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:41,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202464183] [2022-11-20 11:58:41,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202464183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:41,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:41,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:58:41,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754966836] [2022-11-20 11:58:41,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:41,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:58:41,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:41,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:58:41,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:58:41,620 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 217 [2022-11-20 11:58:41,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 272 transitions, 1330 flow. Second operand has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:41,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:41,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 217 [2022-11-20 11:58:41,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:45,621 INFO L130 PetriNetUnfolder]: 2854/19993 cut-off events. [2022-11-20 11:58:45,621 INFO L131 PetriNetUnfolder]: For 25043/25712 co-relation queries the response was YES. [2022-11-20 11:58:45,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36437 conditions, 19993 events. 2854/19993 cut-off events. For 25043/25712 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 277694 event pairs, 1342 based on Foata normal form. 269/17900 useless extension candidates. Maximal degree in co-relation 28117. Up to 3630 conditions per place. [2022-11-20 11:58:45,813 INFO L137 encePairwiseOnDemand]: 204/217 looper letters, 141 selfloop transitions, 40 changer transitions 0/354 dead transitions. [2022-11-20 11:58:45,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 354 transitions, 2221 flow [2022-11-20 11:58:45,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:58:45,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:58:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1587 transitions. [2022-11-20 11:58:45,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8125960061443932 [2022-11-20 11:58:45,818 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1587 transitions. [2022-11-20 11:58:45,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1587 transitions. [2022-11-20 11:58:45,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:45,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1587 transitions. [2022-11-20 11:58:45,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 176.33333333333334) internal successors, (1587), 9 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:45,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:45,830 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:45,830 INFO L175 Difference]: Start difference. First operand has 245 places, 272 transitions, 1330 flow. Second operand 9 states and 1587 transitions. [2022-11-20 11:58:45,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 354 transitions, 2221 flow [2022-11-20 11:58:45,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 354 transitions, 2199 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:58:45,939 INFO L231 Difference]: Finished difference. Result has 252 places, 284 transitions, 1568 flow [2022-11-20 11:58:45,939 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1568, PETRI_PLACES=252, PETRI_TRANSITIONS=284} [2022-11-20 11:58:45,940 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 57 predicate places. [2022-11-20 11:58:45,940 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 284 transitions, 1568 flow [2022-11-20 11:58:45,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:45,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:45,941 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:45,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:58:45,942 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 11:58:45,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:45,942 INFO L85 PathProgramCache]: Analyzing trace with hash 885355114, now seen corresponding path program 1 times [2022-11-20 11:58:45,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:45,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998889562] [2022-11-20 11:58:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:45,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 11:58:46,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:46,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998889562] [2022-11-20 11:58:46,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998889562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:46,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:46,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:46,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618090801] [2022-11-20 11:58:46,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:46,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:46,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:46,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 217 [2022-11-20 11:58:46,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 284 transitions, 1568 flow. Second operand has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:46,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:46,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 217 [2022-11-20 11:58:46,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:48,346 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 451#(<= 1 ~global~0), 498#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 210#(= ~global~0 0), 67#t_funENTRYtrue, Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 476#(<= ~global~0 1), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 57#L952-4true, 503#true, Black: 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 518#true, Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-20 11:58:48,346 INFO L383 tUnfolder$Statistics]: this new event has 150 ancestors and is cut-off event [2022-11-20 11:58:48,346 INFO L386 tUnfolder$Statistics]: existing Event has 112 ancestors and is cut-off event [2022-11-20 11:58:48,346 INFO L386 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-11-20 11:58:48,346 INFO L386 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2022-11-20 11:58:48,587 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, 154#L939-3true, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 451#(<= 1 ~global~0), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 210#(= ~global~0 0), Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 476#(<= ~global~0 1), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 57#L952-4true, 503#true, 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 518#true, Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-20 11:58:48,588 INFO L383 tUnfolder$Statistics]: this new event has 157 ancestors and is cut-off event [2022-11-20 11:58:48,588 INFO L386 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2022-11-20 11:58:48,588 INFO L386 tUnfolder$Statistics]: existing Event has 119 ancestors and is cut-off event [2022-11-20 11:58:48,588 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-11-20 11:58:49,214 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, 113#L939-6true, t_funThread2of3ForFork0NotInUse, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 451#(<= 1 ~global~0), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 210#(= ~global~0 0), 472#true, Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, 503#true, 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 518#true, Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-20 11:58:49,214 INFO L383 tUnfolder$Statistics]: this new event has 159 ancestors and is cut-off event [2022-11-20 11:58:49,214 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-20 11:58:49,214 INFO L386 tUnfolder$Statistics]: existing Event has 112 ancestors and is cut-off event [2022-11-20 11:58:49,214 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:58:49,254 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), 166#L939-16true, Black: 451#(<= 1 ~global~0), 498#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), 472#true, Black: 210#(= ~global~0 0), Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, 503#true, Black: 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 518#true, Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-20 11:58:49,254 INFO L383 tUnfolder$Statistics]: this new event has 169 ancestors and is cut-off event [2022-11-20 11:58:49,254 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-20 11:58:49,254 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-20 11:58:49,255 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-20 11:58:49,359 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), Black: 451#(<= 1 ~global~0), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 158#L939-13true, 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 210#(= ~global~0 0), 472#true, Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, 503#true, 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 518#true, Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-20 11:58:49,360 INFO L383 tUnfolder$Statistics]: this new event has 165 ancestors and is cut-off event [2022-11-20 11:58:49,360 INFO L386 tUnfolder$Statistics]: existing Event has 119 ancestors and is cut-off event [2022-11-20 11:58:49,360 INFO L386 tUnfolder$Statistics]: existing Event has 118 ancestors and is cut-off event [2022-11-20 11:58:49,360 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-20 11:58:49,401 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), 166#L939-16true, Black: 451#(<= 1 ~global~0), 218#true, Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 210#(= ~global~0 0), 472#true, Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, 503#true, 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 518#true, Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-20 11:58:49,401 INFO L383 tUnfolder$Statistics]: this new event has 168 ancestors and is cut-off event [2022-11-20 11:58:49,401 INFO L386 tUnfolder$Statistics]: existing Event has 131 ancestors and is cut-off event [2022-11-20 11:58:49,402 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-20 11:58:49,402 INFO L386 tUnfolder$Statistics]: existing Event has 121 ancestors and is cut-off event [2022-11-20 11:58:49,407 INFO L381 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([855] t_funEXIT-->L952-4: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_13|} AuxVars[] AssignedVars[][169], [t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, t_funThread3of3ForFork0NotInUse, Black: 507#(<= 1 ~global~0), Black: 514#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post35|)), 166#L939-16true, Black: 451#(<= 1 ~global~0), 218#true, 498#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 458#(and (<= 1 |t_funThread1of3ForFork0_#t~post35|) (<= 1 ~global~0)), Black: 200#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 203#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), 231#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 464#(= ~global~0 0), Black: 465#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 211#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 467#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post33| 0)), Black: 210#(= ~global~0 0), 472#true, Black: 213#(and (= ~global~0 0) (= |t_funThread1of3ForFork0_#t~post33| 0)), 428#true, Black: 477#(<= |t_funThread2of3ForFork0_#t~post35| 1), Black: 475#(= |t_funThread2of3ForFork0_#t~post33| 0), Black: 483#(and (<= |t_funThread2of3ForFork0_#t~post35| 1) (<= ~global~0 1)), 447#true, Black: 481#(and (= |t_funThread2of3ForFork0_#t~post33| 0) (<= ~global~0 1)), Black: 476#(<= ~global~0 1), 57#L952-4true, 503#true, Black: 500#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 437#(and (= |t_funThread1of3ForFork0_#t~post33| 0) (<= ~global~0 1)), 518#true, Black: 433#(<= |t_funThread1of3ForFork0_#t~post35| 1), Black: 432#(<= ~global~0 1), Black: 431#(= |t_funThread1of3ForFork0_#t~post33| 0), Black: 439#(and (<= |t_funThread1of3ForFork0_#t~post35| 1) (<= ~global~0 1))]) [2022-11-20 11:58:49,407 INFO L383 tUnfolder$Statistics]: this new event has 169 ancestors and is cut-off event [2022-11-20 11:58:49,407 INFO L386 tUnfolder$Statistics]: existing Event has 169 ancestors and is cut-off event [2022-11-20 11:58:49,407 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-20 11:58:49,408 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-20 11:58:49,408 INFO L386 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2022-11-20 11:58:49,463 INFO L130 PetriNetUnfolder]: 2447/17927 cut-off events. [2022-11-20 11:58:49,463 INFO L131 PetriNetUnfolder]: For 26028/26691 co-relation queries the response was YES. [2022-11-20 11:58:49,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33525 conditions, 17927 events. 2447/17927 cut-off events. For 26028/26691 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 244644 event pairs, 1405 based on Foata normal form. 224/15816 useless extension candidates. Maximal degree in co-relation 25649. Up to 3898 conditions per place. [2022-11-20 11:58:49,616 INFO L137 encePairwiseOnDemand]: 209/217 looper letters, 136 selfloop transitions, 12 changer transitions 0/330 dead transitions. [2022-11-20 11:58:49,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 330 transitions, 2267 flow [2022-11-20 11:58:49,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:58:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:58:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 900 transitions. [2022-11-20 11:58:49,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8294930875576036 [2022-11-20 11:58:49,619 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 900 transitions. [2022-11-20 11:58:49,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 900 transitions. [2022-11-20 11:58:49,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:49,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 900 transitions. [2022-11-20 11:58:49,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:49,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:49,626 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:49,626 INFO L175 Difference]: Start difference. First operand has 252 places, 284 transitions, 1568 flow. Second operand 5 states and 900 transitions. [2022-11-20 11:58:49,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 330 transitions, 2267 flow [2022-11-20 11:58:49,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 330 transitions, 2204 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-20 11:58:49,707 INFO L231 Difference]: Finished difference. Result has 255 places, 288 transitions, 1600 flow [2022-11-20 11:58:49,708 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1600, PETRI_PLACES=255, PETRI_TRANSITIONS=288} [2022-11-20 11:58:49,708 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 60 predicate places. [2022-11-20 11:58:49,708 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 288 transitions, 1600 flow [2022-11-20 11:58:49,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:49,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:49,709 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:49,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 11:58:49,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 11:58:49,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash -971052345, now seen corresponding path program 1 times [2022-11-20 11:58:49,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:49,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691565736] [2022-11-20 11:58:49,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:49,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:58:49,727 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:58:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:58:49,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:58:49,761 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:58:49,761 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-20 11:58:49,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-20 11:58:49,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-20 11:58:49,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-20 11:58:49,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-20 11:58:49,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-20 11:58:49,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-20 11:58:49,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-20 11:58:49,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-20 11:58:49,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-20 11:58:49,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-20 11:58:49,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-20 11:58:49,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-20 11:58:49,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-20 11:58:49,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-20 11:58:49,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-20 11:58:49,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-20 11:58:49,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-20 11:58:49,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-20 11:58:49,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-20 11:58:49,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-20 11:58:49,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 11:58:49,765 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:49,766 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 11:58:49,766 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-20 11:58:49,792 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 11:58:49,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 255 transitions, 554 flow [2022-11-20 11:58:49,886 INFO L130 PetriNetUnfolder]: 96/708 cut-off events. [2022-11-20 11:58:49,886 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-20 11:58:49,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 708 events. 96/708 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2768 event pairs, 6 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 484. Up to 32 conditions per place. [2022-11-20 11:58:49,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 255 transitions, 554 flow [2022-11-20 11:58:49,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 255 transitions, 554 flow [2022-11-20 11:58:49,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:58:49,903 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;@fc71ea4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:58:49,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-20 11:58:49,908 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-11-20 11:58:49,909 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:58:49,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:49,909 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] [2022-11-20 11:58:49,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:58:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash -547762200, now seen corresponding path program 1 times [2022-11-20 11:58:49,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:49,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643562395] [2022-11-20 11:58:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:49,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:49,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:49,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643562395] [2022-11-20 11:58:49,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643562395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:49,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:49,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:49,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371327901] [2022-11-20 11:58:49,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:49,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:49,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:49,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:49,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:49,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 255 [2022-11-20 11:58:49,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 255 transitions, 554 flow. Second operand has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:49,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:49,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 255 [2022-11-20 11:58:49,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:50,124 INFO L130 PetriNetUnfolder]: 32/616 cut-off events. [2022-11-20 11:58:50,124 INFO L131 PetriNetUnfolder]: For 165/337 co-relation queries the response was YES. [2022-11-20 11:58:50,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 616 events. 32/616 cut-off events. For 165/337 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2532 event pairs, 6 based on Foata normal form. 629/1157 useless extension candidates. Maximal degree in co-relation 465. Up to 71 conditions per place. [2022-11-20 11:58:50,132 INFO L137 encePairwiseOnDemand]: 219/255 looper letters, 23 selfloop transitions, 4 changer transitions 0/232 dead transitions. [2022-11-20 11:58:50,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 232 transitions, 562 flow [2022-11-20 11:58:50,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:58:50,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:58:50,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1103 transitions. [2022-11-20 11:58:50,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8650980392156863 [2022-11-20 11:58:50,135 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1103 transitions. [2022-11-20 11:58:50,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1103 transitions. [2022-11-20 11:58:50,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:58:50,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1103 transitions. [2022-11-20 11:58:50,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.6) internal successors, (1103), 5 states have internal predecessors, (1103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:50,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:50,141 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:50,141 INFO L175 Difference]: Start difference. First operand has 228 places, 255 transitions, 554 flow. Second operand 5 states and 1103 transitions. [2022-11-20 11:58:50,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 232 transitions, 562 flow [2022-11-20 11:58:50,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 232 transitions, 562 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 11:58:50,145 INFO L231 Difference]: Finished difference. Result has 234 places, 228 transitions, 526 flow [2022-11-20 11:58:50,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=526, PETRI_PLACES=234, PETRI_TRANSITIONS=228} [2022-11-20 11:58:50,146 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 6 predicate places. [2022-11-20 11:58:50,147 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 228 transitions, 526 flow [2022-11-20 11:58:50,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.75) internal successors, (827), 4 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:50,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:58:50,147 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] [2022-11-20 11:58:50,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 11:58:50,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:58:50,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:50,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2115372261, now seen corresponding path program 1 times [2022-11-20 11:58:50,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:50,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858998662] [2022-11-20 11:58:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:50,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:50,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:50,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858998662] [2022-11-20 11:58:50,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858998662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:50,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:50,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:58:50,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605416553] [2022-11-20 11:58:50,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:50,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:50,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:50,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:50,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:50,207 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 255 [2022-11-20 11:58:50,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 228 transitions, 526 flow. Second operand has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:50,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:58:50,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 255 [2022-11-20 11:58:50,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:58:59,534 INFO L130 PetriNetUnfolder]: 15565/55740 cut-off events. [2022-11-20 11:58:59,534 INFO L131 PetriNetUnfolder]: For 11489/12591 co-relation queries the response was YES. [2022-11-20 11:59:00,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81161 conditions, 55740 events. 15565/55740 cut-off events. For 11489/12591 co-relation queries the response was YES. Maximal size of possible extension queue 2222. Compared 804440 event pairs, 9757 based on Foata normal form. 0/48272 useless extension candidates. Maximal degree in co-relation 81087. Up to 15210 conditions per place. [2022-11-20 11:59:00,673 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 68 selfloop transitions, 10 changer transitions 0/275 dead transitions. [2022-11-20 11:59:00,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 275 transitions, 848 flow [2022-11-20 11:59:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:59:00,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:59:00,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1052 transitions. [2022-11-20 11:59:00,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8250980392156863 [2022-11-20 11:59:00,676 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1052 transitions. [2022-11-20 11:59:00,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1052 transitions. [2022-11-20 11:59:00,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:00,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1052 transitions. [2022-11-20 11:59:00,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 210.4) internal successors, (1052), 5 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) [2022-11-20 11:59:00,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:00,682 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:00,683 INFO L175 Difference]: Start difference. First operand has 234 places, 228 transitions, 526 flow. Second operand 5 states and 1052 transitions. [2022-11-20 11:59:00,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 275 transitions, 848 flow [2022-11-20 11:59:00,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 275 transitions, 846 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:59:00,696 INFO L231 Difference]: Finished difference. Result has 240 places, 237 transitions, 603 flow [2022-11-20 11:59:00,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=603, PETRI_PLACES=240, PETRI_TRANSITIONS=237} [2022-11-20 11:59:00,698 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 12 predicate places. [2022-11-20 11:59:00,698 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 237 transitions, 603 flow [2022-11-20 11:59:00,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:00,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:00,699 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:00,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 11:59:00,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:59:00,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:00,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1718476053, now seen corresponding path program 1 times [2022-11-20 11:59:00,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:00,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171773848] [2022-11-20 11:59:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:00,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:59:00,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:00,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171773848] [2022-11-20 11:59:00,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171773848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:00,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:00,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:59:00,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717482430] [2022-11-20 11:59:00,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:00,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:59:00,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:00,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:59:00,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:59:00,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 255 [2022-11-20 11:59:00,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 237 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:00,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:00,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 255 [2022-11-20 11:59:00,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:01,237 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1146] t_funEXIT-->L952-4: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][145], [t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 251#true, 148#L952-4true, Black: 236#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 233#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 234#(= 0 |ULTIMATE.start_main_#t~post37#1|), 241#true, Black: 243#(= ~global~0 0), Black: 244#(= |t_funThread1of4ForFork0_#t~post33| 0), 31#t_funENTRYtrue, Black: 246#(and (= |t_funThread1of4ForFork0_#t~post33| 0) (= ~global~0 0)), t_funThread1of4ForFork0NotInUse]) [2022-11-20 11:59:01,237 INFO L383 tUnfolder$Statistics]: this new event has 196 ancestors and is cut-off event [2022-11-20 11:59:01,237 INFO L386 tUnfolder$Statistics]: existing Event has 149 ancestors and is cut-off event [2022-11-20 11:59:01,237 INFO L386 tUnfolder$Statistics]: existing Event has 149 ancestors and is cut-off event [2022-11-20 11:59:01,237 INFO L386 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-11-20 11:59:01,284 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1146] t_funEXIT-->L952-4: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][145], [t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 251#true, 148#L952-4true, 91#L939-6true, Black: 236#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 233#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 234#(= 0 |ULTIMATE.start_main_#t~post37#1|), 241#true, Black: 243#(= ~global~0 0), Black: 244#(= |t_funThread1of4ForFork0_#t~post33| 0), Black: 246#(and (= |t_funThread1of4ForFork0_#t~post33| 0) (= ~global~0 0)), t_funThread1of4ForFork0NotInUse]) [2022-11-20 11:59:01,284 INFO L383 tUnfolder$Statistics]: this new event has 206 ancestors and is cut-off event [2022-11-20 11:59:01,284 INFO L386 tUnfolder$Statistics]: existing Event has 206 ancestors and is cut-off event [2022-11-20 11:59:01,284 INFO L386 tUnfolder$Statistics]: existing Event has 159 ancestors and is cut-off event [2022-11-20 11:59:01,284 INFO L386 tUnfolder$Statistics]: existing Event has 112 ancestors and is cut-off event [2022-11-20 11:59:01,303 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1146] t_funEXIT-->L952-4: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][145], [t_funThread2of4ForFork0NotInUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 251#true, 148#L952-4true, Black: 236#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 233#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 234#(= 0 |ULTIMATE.start_main_#t~post37#1|), 241#true, Black: 243#(= ~global~0 0), Black: 244#(= |t_funThread1of4ForFork0_#t~post33| 0), Black: 246#(and (= |t_funThread1of4ForFork0_#t~post33| 0) (= ~global~0 0)), t_funThread1of4ForFork0NotInUse]) [2022-11-20 11:59:01,303 INFO L383 tUnfolder$Statistics]: this new event has 231 ancestors and is cut-off event [2022-11-20 11:59:01,303 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-11-20 11:59:01,303 INFO L386 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-11-20 11:59:01,303 INFO L386 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-11-20 11:59:01,307 INFO L130 PetriNetUnfolder]: 176/2731 cut-off events. [2022-11-20 11:59:01,307 INFO L131 PetriNetUnfolder]: For 1049/2553 co-relation queries the response was YES. [2022-11-20 11:59:01,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3422 conditions, 2731 events. 176/2731 cut-off events. For 1049/2553 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 23325 event pairs, 64 based on Foata normal form. 108/2418 useless extension candidates. Maximal degree in co-relation 2653. Up to 205 conditions per place. [2022-11-20 11:59:01,346 INFO L137 encePairwiseOnDemand]: 249/255 looper letters, 15 selfloop transitions, 8 changer transitions 0/237 dead transitions. [2022-11-20 11:59:01,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 237 transitions, 647 flow [2022-11-20 11:59:01,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:59:01,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:59:01,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1046 transitions. [2022-11-20 11:59:01,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8203921568627451 [2022-11-20 11:59:01,349 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1046 transitions. [2022-11-20 11:59:01,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1046 transitions. [2022-11-20 11:59:01,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:01,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1046 transitions. [2022-11-20 11:59:01,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.2) internal successors, (1046), 5 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:01,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:01,355 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:01,355 INFO L175 Difference]: Start difference. First operand has 240 places, 237 transitions, 603 flow. Second operand 5 states and 1046 transitions. [2022-11-20 11:59:01,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 237 transitions, 647 flow [2022-11-20 11:59:01,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 237 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 11:59:01,361 INFO L231 Difference]: Finished difference. Result has 243 places, 237 transitions, 618 flow [2022-11-20 11:59:01,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=618, PETRI_PLACES=243, PETRI_TRANSITIONS=237} [2022-11-20 11:59:01,362 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 15 predicate places. [2022-11-20 11:59:01,362 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 237 transitions, 618 flow [2022-11-20 11:59:01,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:01,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:01,363 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:01,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 11:59:01,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:59:01,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:01,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1733151026, now seen corresponding path program 1 times [2022-11-20 11:59:01,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:01,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671841805] [2022-11-20 11:59:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:01,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:01,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:01,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671841805] [2022-11-20 11:59:01,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671841805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:01,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520853116] [2022-11-20 11:59:01,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:01,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:01,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:01,448 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:01,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:59:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:01,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:59:01,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:01,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:01,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520853116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:01,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:59:01,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 11:59:01,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357916710] [2022-11-20 11:59:01,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:01,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:59:01,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:01,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:59:01,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:59:01,625 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 255 [2022-11-20 11:59:01,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 237 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 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) [2022-11-20 11:59:01,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:01,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 255 [2022-11-20 11:59:01,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:02,207 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1146] t_funEXIT-->L952-4: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][147], [t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 251#true, 148#L952-4true, Black: 236#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 233#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 234#(= 0 |ULTIMATE.start_main_#t~post37#1|), Black: 243#(= ~global~0 0), Black: 244#(= |t_funThread1of4ForFork0_#t~post33| 0), 31#t_funENTRYtrue, Black: 246#(and (= |t_funThread1of4ForFork0_#t~post33| 0) (= ~global~0 0)), 264#(<= 1 |ULTIMATE.start_main_~i~1#1|), t_funThread1of4ForFork0NotInUse]) [2022-11-20 11:59:02,208 INFO L383 tUnfolder$Statistics]: this new event has 196 ancestors and is cut-off event [2022-11-20 11:59:02,208 INFO L386 tUnfolder$Statistics]: existing Event has 149 ancestors and is cut-off event [2022-11-20 11:59:02,208 INFO L386 tUnfolder$Statistics]: existing Event has 149 ancestors and is cut-off event [2022-11-20 11:59:02,208 INFO L386 tUnfolder$Statistics]: existing Event has 102 ancestors and is cut-off event [2022-11-20 11:59:02,247 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1146] t_funEXIT-->L952-4: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][147], [t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 251#true, 91#L939-6true, 148#L952-4true, Black: 236#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 233#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 234#(= 0 |ULTIMATE.start_main_#t~post37#1|), Black: 243#(= ~global~0 0), Black: 244#(= |t_funThread1of4ForFork0_#t~post33| 0), Black: 246#(and (= |t_funThread1of4ForFork0_#t~post33| 0) (= ~global~0 0)), 264#(<= 1 |ULTIMATE.start_main_~i~1#1|), t_funThread1of4ForFork0NotInUse]) [2022-11-20 11:59:02,247 INFO L383 tUnfolder$Statistics]: this new event has 206 ancestors and is cut-off event [2022-11-20 11:59:02,248 INFO L386 tUnfolder$Statistics]: existing Event has 159 ancestors and is cut-off event [2022-11-20 11:59:02,248 INFO L386 tUnfolder$Statistics]: existing Event has 112 ancestors and is cut-off event [2022-11-20 11:59:02,248 INFO L386 tUnfolder$Statistics]: existing Event has 206 ancestors and is cut-off event [2022-11-20 11:59:02,267 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1146] t_funEXIT-->L952-4: Formula: (= v_t_funThread1of4ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem46#1_17| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) InVars {ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem46#1=|v_ULTIMATE.start_main_#t~mem46#1_17|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][147], [t_funThread2of4ForFork0NotInUse, t_funThread3of4ForFork0NotInUse, t_funThread4of4ForFork0NotInUse, 251#true, 148#L952-4true, Black: 236#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= 0 |ULTIMATE.start_main_#t~post37#1|)), Black: 233#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 234#(= 0 |ULTIMATE.start_main_#t~post37#1|), Black: 243#(= ~global~0 0), Black: 244#(= |t_funThread1of4ForFork0_#t~post33| 0), Black: 246#(and (= |t_funThread1of4ForFork0_#t~post33| 0) (= ~global~0 0)), 264#(<= 1 |ULTIMATE.start_main_~i~1#1|), t_funThread1of4ForFork0NotInUse]) [2022-11-20 11:59:02,267 INFO L383 tUnfolder$Statistics]: this new event has 231 ancestors and is cut-off event [2022-11-20 11:59:02,267 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-11-20 11:59:02,268 INFO L386 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-11-20 11:59:02,268 INFO L386 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2022-11-20 11:59:02,270 INFO L130 PetriNetUnfolder]: 176/2728 cut-off events. [2022-11-20 11:59:02,270 INFO L131 PetriNetUnfolder]: For 1031/2402 co-relation queries the response was YES. [2022-11-20 11:59:02,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3432 conditions, 2728 events. 176/2728 cut-off events. For 1031/2402 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 23301 event pairs, 64 based on Foata normal form. 41/2348 useless extension candidates. Maximal degree in co-relation 2652. Up to 214 conditions per place. [2022-11-20 11:59:02,314 INFO L137 encePairwiseOnDemand]: 250/255 looper letters, 19 selfloop transitions, 6 changer transitions 0/239 dead transitions. [2022-11-20 11:59:02,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 239 transitions, 670 flow [2022-11-20 11:59:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:59:02,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:59:02,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1461 transitions. [2022-11-20 11:59:02,318 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8184873949579832 [2022-11-20 11:59:02,318 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1461 transitions. [2022-11-20 11:59:02,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1461 transitions. [2022-11-20 11:59:02,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:02,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1461 transitions. [2022-11-20 11:59:02,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 208.71428571428572) internal successors, (1461), 7 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:02,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:02,325 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:02,326 INFO L175 Difference]: Start difference. First operand has 243 places, 237 transitions, 618 flow. Second operand 7 states and 1461 transitions. [2022-11-20 11:59:02,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 239 transitions, 670 flow [2022-11-20 11:59:02,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 239 transitions, 658 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:59:02,332 INFO L231 Difference]: Finished difference. Result has 245 places, 236 transitions, 614 flow [2022-11-20 11:59:02,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=614, PETRI_PLACES=245, PETRI_TRANSITIONS=236} [2022-11-20 11:59:02,333 INFO L288 CegarLoopForPetriNet]: 228 programPoint places, 17 predicate places. [2022-11-20 11:59:02,333 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 236 transitions, 614 flow [2022-11-20 11:59:02,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 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) [2022-11-20 11:59:02,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:02,334 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] [2022-11-20 11:59:02,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:02,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_542cd90a-6c05-4453-9190-366d4a52f23a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 11:59:02,539 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 11:59:02,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:02,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1290870070, now seen corresponding path program 1 times [2022-11-20 11:59:02,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:02,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651626532] [2022-11-20 11:59:02,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:02,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:02,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:02,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:02,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651626532] [2022-11-20 11:59:02,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651626532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:02,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:02,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:59:02,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655819001] [2022-11-20 11:59:02,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:02,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:59:02,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:02,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:59:02,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:59:02,777 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 255 [2022-11-20 11:59:02,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 236 transitions, 614 flow. Second operand has 6 states, 6 states have (on average 190.5) internal successors, (1143), 6 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:02,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:02,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 255 [2022-11-20 11:59:02,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand