./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-30.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_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/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_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-30.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/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_8cc5de04-2d9d-4697-af88-e37d7defc958/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 e9f2c63b5b236ffd2c3c18bb3989267f7d1d50794d9317a52e37b9cf94f3ba35 --- 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 12:03:02,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:03:02,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:03:02,475 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:03:02,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:03:02,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:03:02,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:03:02,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:03:02,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:03:02,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:03:02,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:03:02,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:03:02,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:03:02,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:03:02,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:03:02,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:03:02,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:03:02,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:03:02,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:03:02,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:03:02,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:03:02,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:03:02,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:03:02,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:03:02,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:03:02,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:03:02,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:03:02,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:03:02,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:03:02,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:03:02,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:03:02,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:03:02,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:03:02,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:03:02,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:03:02,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:03:02,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:03:02,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:03:02,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:03:02,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:03:02,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:03:02,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:03:02,567 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:03:02,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:03:02,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:03:02,568 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:03:02,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:03:02,569 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:03:02,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:03:02,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:03:02,571 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:03:02,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:03:02,571 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:03:02,572 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:03:02,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:03:02,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:03:02,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:03:02,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:03:02,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:03:02,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:03:02,574 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:03:02,574 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:03:02,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:03:02,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:03:02,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:03:02,575 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:03:02,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:03:02,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:03:02,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:03:02,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:03:02,577 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:03:02,577 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:03:02,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:03:02,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:03:02,578 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:03:02,579 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:03:02,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:03:02,579 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_8cc5de04-2d9d-4697-af88-e37d7defc958/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9f2c63b5b236ffd2c3c18bb3989267f7d1d50794d9317a52e37b9cf94f3ba35 [2022-11-20 12:03:02,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:03:02,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:03:02,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:03:02,925 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:03:02,926 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:03:02,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread-deagle/reorder_c11_good-30.i [2022-11-20 12:03:06,298 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:03:06,597 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:03:06,597 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/sv-benchmarks/c/pthread-deagle/reorder_c11_good-30.i [2022-11-20 12:03:06,614 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/data/b129f5333/6bd2a709acd94c7c91bf3f6b247dca34/FLAG4c76b7776 [2022-11-20 12:03:06,631 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/data/b129f5333/6bd2a709acd94c7c91bf3f6b247dca34 [2022-11-20 12:03:06,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:03:06,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:03:06,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:03:06,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:03:06,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:03:06,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:03:06" (1/1) ... [2022-11-20 12:03:06,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2846a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:06, skipping insertion in model container [2022-11-20 12:03:06,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:03:06" (1/1) ... [2022-11-20 12:03:06,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:03:06,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:03:07,058 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_8cc5de04-2d9d-4697-af88-e37d7defc958/sv-benchmarks/c/pthread-deagle/reorder_c11_good-30.i[30195,30208] [2022-11-20 12:03:07,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:03:07,098 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:03:07,166 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_8cc5de04-2d9d-4697-af88-e37d7defc958/sv-benchmarks/c/pthread-deagle/reorder_c11_good-30.i[30195,30208] [2022-11-20 12:03:07,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:03:07,214 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:03:07,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:07 WrapperNode [2022-11-20 12:03:07,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:03:07,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:03:07,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:03:07,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:03:07,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:07" (1/1) ... [2022-11-20 12:03:07,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:07" (1/1) ... [2022-11-20 12:03:07,262 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2022-11-20 12:03:07,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:03:07,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:03:07,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:03:07,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:03:07,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:07" (1/1) ... [2022-11-20 12:03:07,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:07" (1/1) ... [2022-11-20 12:03:07,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:07" (1/1) ... [2022-11-20 12:03:07,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:07" (1/1) ... [2022-11-20 12:03:07,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:07" (1/1) ... [2022-11-20 12:03:07,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:07" (1/1) ... [2022-11-20 12:03:07,292 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:07" (1/1) ... [2022-11-20 12:03:07,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:07" (1/1) ... [2022-11-20 12:03:07,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:03:07,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:03:07,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:03:07,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:03:07,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:07" (1/1) ... [2022-11-20 12:03:07,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:03:07,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:03:07,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:03:07,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:03:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:03:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-20 12:03:07,391 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-20 12:03:07,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:03:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:03:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:03:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:03:07,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:03:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-20 12:03:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-20 12:03:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:03:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:03:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:03:07,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:03:07,396 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 12:03:07,540 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:03:07,542 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:03:07,895 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:03:07,905 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:03:07,908 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-20 12:03:07,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:03:07 BoogieIcfgContainer [2022-11-20 12:03:07,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:03:07,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:03:07,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:03:07,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:03:07,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:03:06" (1/3) ... [2022-11-20 12:03:07,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4493305e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:03:07, skipping insertion in model container [2022-11-20 12:03:07,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:07" (2/3) ... [2022-11-20 12:03:07,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4493305e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:03:07, skipping insertion in model container [2022-11-20 12:03:07,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:03:07" (3/3) ... [2022-11-20 12:03:07,941 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-30.i [2022-11-20 12:03:07,952 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:03:07,989 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:03:07,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 12:03:07,989 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:03:08,057 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 12:03:08,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 106 transitions, 234 flow [2022-11-20 12:03:08,219 INFO L130 PetriNetUnfolder]: 24/236 cut-off events. [2022-11-20 12:03:08,219 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 12:03:08,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 236 events. 24/236 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 745 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 116. Up to 8 conditions per place. [2022-11-20 12:03:08,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 106 transitions, 234 flow [2022-11-20 12:03:08,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 106 transitions, 234 flow [2022-11-20 12:03:08,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:03:08,266 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;@11ee980b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:03:08,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-20 12:03:08,284 INFO L130 PetriNetUnfolder]: 4/58 cut-off events. [2022-11-20 12:03:08,285 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:03:08,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:08,286 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:03:08,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:08,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:08,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1335782458, now seen corresponding path program 1 times [2022-11-20 12:03:08,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:08,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380395164] [2022-11-20 12:03:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:08,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:08,775 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 12:03:08,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:08,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380395164] [2022-11-20 12:03:08,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380395164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:08,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:08,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:03:08,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29464443] [2022-11-20 12:03:08,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:08,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:08,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:08,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:08,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:08,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 106 [2022-11-20 12:03:08,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 106 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 12:03:08,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:08,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 106 [2022-11-20 12:03:08,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:09,088 INFO L130 PetriNetUnfolder]: 2/139 cut-off events. [2022-11-20 12:03:09,089 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 12:03:09,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 139 events. 2/139 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 154 event pairs, 0 based on Foata normal form. 18/141 useless extension candidates. Maximal degree in co-relation 32. Up to 30 conditions per place. [2022-11-20 12:03:09,100 INFO L137 encePairwiseOnDemand]: 85/106 looper letters, 33 selfloop transitions, 9 changer transitions 14/109 dead transitions. [2022-11-20 12:03:09,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 109 transitions, 340 flow [2022-11-20 12:03:09,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:03:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:03:09,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 373 transitions. [2022-11-20 12:03:09,117 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7037735849056603 [2022-11-20 12:03:09,118 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 373 transitions. [2022-11-20 12:03:09,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 373 transitions. [2022-11-20 12:03:09,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:09,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 373 transitions. [2022-11-20 12:03:09,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 12:03:09,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states 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 12:03:09,137 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 106.0) internal successors, (636), 6 states have internal predecessors, (636), 0 states have call successors, (0), 0 states 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 12:03:09,140 INFO L175 Difference]: Start difference. First operand has 102 places, 106 transitions, 234 flow. Second operand 5 states and 373 transitions. [2022-11-20 12:03:09,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 109 transitions, 340 flow [2022-11-20 12:03:09,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:03:09,151 INFO L231 Difference]: Finished difference. Result has 103 places, 86 transitions, 225 flow [2022-11-20 12:03:09,153 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=103, PETRI_TRANSITIONS=86} [2022-11-20 12:03:09,158 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 1 predicate places. [2022-11-20 12:03:09,158 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 225 flow [2022-11-20 12:03:09,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 12:03:09,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:09,159 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] [2022-11-20 12:03:09,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:03:09,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:09,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:09,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1407798388, now seen corresponding path program 1 times [2022-11-20 12:03:09,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:09,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660373043] [2022-11-20 12:03:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:09,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:09,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:03:09,221 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:03:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:03:09,293 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:03:09,295 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:03:09,299 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-20 12:03:09,306 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-20 12:03:09,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-20 12:03:09,307 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-20 12:03:09,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-20 12:03:09,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-20 12:03:09,308 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-20 12:03:09,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-20 12:03:09,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-20 12:03:09,309 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-20 12:03:09,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:03:09,310 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 12:03:09,317 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:03:09,317 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 12:03:09,378 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-20 12:03:09,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 124 transitions, 296 flow [2022-11-20 12:03:09,568 INFO L130 PetriNetUnfolder]: 107/802 cut-off events. [2022-11-20 12:03:09,569 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-20 12:03:09,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 802 events. 107/802 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4068 event pairs, 2 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 467. Up to 32 conditions per place. [2022-11-20 12:03:09,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 124 transitions, 296 flow [2022-11-20 12:03:09,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 124 transitions, 296 flow [2022-11-20 12:03:09,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:03:09,592 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;@11ee980b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:03:09,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-20 12:03:09,612 INFO L130 PetriNetUnfolder]: 4/59 cut-off events. [2022-11-20 12:03:09,612 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:03:09,612 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:09,612 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] [2022-11-20 12:03:09,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:09,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:09,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1768181364, now seen corresponding path program 1 times [2022-11-20 12:03:09,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:09,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444943180] [2022-11-20 12:03:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:09,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:09,753 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 12:03:09,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:09,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444943180] [2022-11-20 12:03:09,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444943180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:09,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:09,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:03:09,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777226011] [2022-11-20 12:03:09,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:09,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:09,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:09,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:09,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:09,757 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 124 [2022-11-20 12:03:09,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 124 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 12:03:09,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:09,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 124 [2022-11-20 12:03:09,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:10,110 INFO L130 PetriNetUnfolder]: 58/741 cut-off events. [2022-11-20 12:03:10,111 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2022-11-20 12:03:10,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 741 events. 58/741 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4038 event pairs, 0 based on Foata normal form. 244/867 useless extension candidates. Maximal degree in co-relation 591. Up to 212 conditions per place. [2022-11-20 12:03:10,116 INFO L137 encePairwiseOnDemand]: 102/124 looper letters, 59 selfloop transitions, 10 changer transitions 8/141 dead transitions. [2022-11-20 12:03:10,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 141 transitions, 494 flow [2022-11-20 12:03:10,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:03:10,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:03:10,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2022-11-20 12:03:10,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.714516129032258 [2022-11-20 12:03:10,124 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2022-11-20 12:03:10,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2022-11-20 12:03:10,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:10,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2022-11-20 12:03:10,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 12:03:10,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 12:03:10,134 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 12:03:10,134 INFO L175 Difference]: Start difference. First operand has 119 places, 124 transitions, 296 flow. Second operand 5 states and 443 transitions. [2022-11-20 12:03:10,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 141 transitions, 494 flow [2022-11-20 12:03:10,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 141 transitions, 494 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:03:10,144 INFO L231 Difference]: Finished difference. Result has 122 places, 112 transitions, 326 flow [2022-11-20 12:03:10,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=326, PETRI_PLACES=122, PETRI_TRANSITIONS=112} [2022-11-20 12:03:10,146 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 3 predicate places. [2022-11-20 12:03:10,146 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 112 transitions, 326 flow [2022-11-20 12:03:10,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states 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 12:03:10,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:10,148 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] [2022-11-20 12:03:10,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:03:10,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:10,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:10,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1604792045, now seen corresponding path program 1 times [2022-11-20 12:03:10,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:10,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519857792] [2022-11-20 12:03:10,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:10,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:10,278 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 12:03:10,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:10,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519857792] [2022-11-20 12:03:10,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519857792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:10,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:10,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:03:10,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978808166] [2022-11-20 12:03:10,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:10,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:10,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:10,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:10,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:10,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 124 [2022-11-20 12:03:10,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 112 transitions, 326 flow. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states 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 12:03:10,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:10,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 124 [2022-11-20 12:03:10,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:10,512 INFO L130 PetriNetUnfolder]: 58/652 cut-off events. [2022-11-20 12:03:10,512 INFO L131 PetriNetUnfolder]: For 159/159 co-relation queries the response was YES. [2022-11-20 12:03:10,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 652 events. 58/652 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3319 event pairs, 16 based on Foata normal form. 1/569 useless extension candidates. Maximal degree in co-relation 693. Up to 264 conditions per place. [2022-11-20 12:03:10,518 INFO L137 encePairwiseOnDemand]: 109/124 looper letters, 31 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2022-11-20 12:03:10,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 115 transitions, 432 flow [2022-11-20 12:03:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:03:10,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:03:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 401 transitions. [2022-11-20 12:03:10,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.646774193548387 [2022-11-20 12:03:10,523 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 401 transitions. [2022-11-20 12:03:10,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 401 transitions. [2022-11-20 12:03:10,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:10,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 401 transitions. [2022-11-20 12:03:10,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 12:03:10,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 12:03:10,528 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 12:03:10,528 INFO L175 Difference]: Start difference. First operand has 122 places, 112 transitions, 326 flow. Second operand 5 states and 401 transitions. [2022-11-20 12:03:10,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 115 transitions, 432 flow [2022-11-20 12:03:10,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 115 transitions, 424 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:03:10,555 INFO L231 Difference]: Finished difference. Result has 117 places, 115 transitions, 386 flow [2022-11-20 12:03:10,556 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2022-11-20 12:03:10,556 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, -2 predicate places. [2022-11-20 12:03:10,557 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 386 flow [2022-11-20 12:03:10,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states 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 12:03:10,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:10,557 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] [2022-11-20 12:03:10,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:03:10,558 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:10,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:10,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1791053776, now seen corresponding path program 1 times [2022-11-20 12:03:10,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:10,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126997190] [2022-11-20 12:03:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:10,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:10,672 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 12:03:10,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:10,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126997190] [2022-11-20 12:03:10,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126997190] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:03:10,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700776910] [2022-11-20 12:03:10,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:10,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:03:10,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:03:10,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:03:10,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:03:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:10,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:03:10,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:10,919 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 12:03:10,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:10,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700776910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:10,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:03:10,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:03:10,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028357922] [2022-11-20 12:03:10,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:10,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:03:10,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:10,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:03:10,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:03:10,924 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 124 [2022-11-20 12:03:10,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 12:03:10,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:10,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 124 [2022-11-20 12:03:10,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:11,238 INFO L130 PetriNetUnfolder]: 58/651 cut-off events. [2022-11-20 12:03:11,238 INFO L131 PetriNetUnfolder]: For 408/408 co-relation queries the response was YES. [2022-11-20 12:03:11,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 651 events. 58/651 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3317 event pairs, 0 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 775. Up to 167 conditions per place. [2022-11-20 12:03:11,245 INFO L137 encePairwiseOnDemand]: 111/124 looper letters, 53 selfloop transitions, 14 changer transitions 0/131 dead transitions. [2022-11-20 12:03:11,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 131 transitions, 574 flow [2022-11-20 12:03:11,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:03:11,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:03:11,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 565 transitions. [2022-11-20 12:03:11,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6509216589861752 [2022-11-20 12:03:11,249 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 565 transitions. [2022-11-20 12:03:11,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 565 transitions. [2022-11-20 12:03:11,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:11,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 565 transitions. [2022-11-20 12:03:11,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states 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 12:03:11,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states 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 12:03:11,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states 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 12:03:11,255 INFO L175 Difference]: Start difference. First operand has 117 places, 115 transitions, 386 flow. Second operand 7 states and 565 transitions. [2022-11-20 12:03:11,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 131 transitions, 574 flow [2022-11-20 12:03:11,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 131 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:03:11,263 INFO L231 Difference]: Finished difference. Result has 119 places, 114 transitions, 386 flow [2022-11-20 12:03:11,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=386, PETRI_PLACES=119, PETRI_TRANSITIONS=114} [2022-11-20 12:03:11,265 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, 0 predicate places. [2022-11-20 12:03:11,266 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 114 transitions, 386 flow [2022-11-20 12:03:11,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.83333333333333) internal successors, (443), 6 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 12:03:11,268 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:11,268 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] [2022-11-20 12:03:11,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:03:11,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:03:11,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:11,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:11,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1170000787, now seen corresponding path program 1 times [2022-11-20 12:03:11,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:11,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036988150] [2022-11-20 12:03:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:11,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:03:11,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:11,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036988150] [2022-11-20 12:03:11,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036988150] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:03:11,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625855071] [2022-11-20 12:03:11,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:11,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:03:11,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:03:11,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:03:11,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:03:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:11,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:03:11,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:03:11,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:03:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:03:11,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625855071] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:03:11,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:03:11,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 12:03:11,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314475337] [2022-11-20 12:03:11,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:03:11,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:03:11,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:11,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:03:11,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:03:11,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 124 [2022-11-20 12:03:11,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 114 transitions, 386 flow. Second operand has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 12:03:11,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:11,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 124 [2022-11-20 12:03:11,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:11,956 INFO L130 PetriNetUnfolder]: 0/61 cut-off events. [2022-11-20 12:03:11,956 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-11-20 12:03:11,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 61 events. 0/61 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 2/63 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2022-11-20 12:03:11,957 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 14 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2022-11-20 12:03:11,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 55 transitions, 206 flow [2022-11-20 12:03:11,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:03:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 12:03:11,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 662 transitions. [2022-11-20 12:03:11,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5931899641577061 [2022-11-20 12:03:11,961 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 662 transitions. [2022-11-20 12:03:11,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 662 transitions. [2022-11-20 12:03:11,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:11,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 662 transitions. [2022-11-20 12:03:11,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 0 states 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 12:03:11,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states 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 12:03:11,966 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states 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 12:03:11,967 INFO L175 Difference]: Start difference. First operand has 119 places, 114 transitions, 386 flow. Second operand 9 states and 662 transitions. [2022-11-20 12:03:11,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 55 transitions, 206 flow [2022-11-20 12:03:11,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 55 transitions, 189 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-11-20 12:03:11,970 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 149 flow [2022-11-20 12:03:11,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=149, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2022-11-20 12:03:11,978 INFO L288 CegarLoopForPetriNet]: 119 programPoint places, -50 predicate places. [2022-11-20 12:03:11,978 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 149 flow [2022-11-20 12:03:11,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.5) internal successors, (745), 10 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 12:03:11,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:11,979 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] [2022-11-20 12:03:11,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:03:12,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:03:12,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:12,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:12,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2114441817, now seen corresponding path program 1 times [2022-11-20 12:03:12,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:12,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421792978] [2022-11-20 12:03:12,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:12,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:03:12,217 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:03:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:03:12,238 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:03:12,238 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:03:12,239 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-20 12:03:12,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-20 12:03:12,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-20 12:03:12,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-20 12:03:12,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-20 12:03:12,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-20 12:03:12,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-20 12:03:12,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-20 12:03:12,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-20 12:03:12,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-20 12:03:12,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:03:12,242 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 12:03:12,243 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:03:12,243 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 12:03:12,276 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-20 12:03:12,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 142 transitions, 362 flow [2022-11-20 12:03:12,718 INFO L130 PetriNetUnfolder]: 496/2832 cut-off events. [2022-11-20 12:03:12,718 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-20 12:03:12,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3283 conditions, 2832 events. 496/2832 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 19891 event pairs, 64 based on Foata normal form. 0/2242 useless extension candidates. Maximal degree in co-relation 1682. Up to 192 conditions per place. [2022-11-20 12:03:12,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 142 transitions, 362 flow [2022-11-20 12:03:12,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 142 transitions, 362 flow [2022-11-20 12:03:12,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:03:12,766 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;@11ee980b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:03:12,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-20 12:03:12,776 INFO L130 PetriNetUnfolder]: 4/59 cut-off events. [2022-11-20 12:03:12,777 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:03:12,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:12,777 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] [2022-11-20 12:03:12,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:12,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:12,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1747318180, now seen corresponding path program 1 times [2022-11-20 12:03:12,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:12,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108240569] [2022-11-20 12:03:12,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:12,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:12,889 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 12:03:12,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:12,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108240569] [2022-11-20 12:03:12,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108240569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:12,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:12,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:03:12,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316916931] [2022-11-20 12:03:12,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:12,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:12,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:12,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:12,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:12,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 142 [2022-11-20 12:03:12,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 142 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 12:03:12,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:12,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 142 [2022-11-20 12:03:12,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:13,622 INFO L130 PetriNetUnfolder]: 444/3249 cut-off events. [2022-11-20 12:03:13,622 INFO L131 PetriNetUnfolder]: For 592/592 co-relation queries the response was YES. [2022-11-20 12:03:13,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5484 conditions, 3249 events. 444/3249 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 27769 event pairs, 10 based on Foata normal form. 1641/4360 useless extension candidates. Maximal degree in co-relation 2717. Up to 1064 conditions per place. [2022-11-20 12:03:13,642 INFO L137 encePairwiseOnDemand]: 119/142 looper letters, 69 selfloop transitions, 10 changer transitions 8/160 dead transitions. [2022-11-20 12:03:13,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 160 transitions, 594 flow [2022-11-20 12:03:13,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:03:13,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:03:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 500 transitions. [2022-11-20 12:03:13,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.704225352112676 [2022-11-20 12:03:13,645 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 500 transitions. [2022-11-20 12:03:13,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 500 transitions. [2022-11-20 12:03:13,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:13,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 500 transitions. [2022-11-20 12:03:13,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 12:03:13,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 12:03:13,652 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 12:03:13,652 INFO L175 Difference]: Start difference. First operand has 136 places, 142 transitions, 362 flow. Second operand 5 states and 500 transitions. [2022-11-20 12:03:13,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 160 transitions, 594 flow [2022-11-20 12:03:13,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 160 transitions, 594 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:03:13,657 INFO L231 Difference]: Finished difference. Result has 137 places, 127 transitions, 386 flow [2022-11-20 12:03:13,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=386, PETRI_PLACES=137, PETRI_TRANSITIONS=127} [2022-11-20 12:03:13,660 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 1 predicate places. [2022-11-20 12:03:13,660 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 127 transitions, 386 flow [2022-11-20 12:03:13,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 12:03:13,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:13,661 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] [2022-11-20 12:03:13,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:03:13,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:13,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:13,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1620439569, now seen corresponding path program 1 times [2022-11-20 12:03:13,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:13,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159510079] [2022-11-20 12:03:13,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:13,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:13,758 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 12:03:13,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:13,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159510079] [2022-11-20 12:03:13,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159510079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:13,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:13,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:03:13,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159287994] [2022-11-20 12:03:13,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:13,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:13,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:13,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:13,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:13,762 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 142 [2022-11-20 12:03:13,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 127 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states 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 12:03:13,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:13,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 142 [2022-11-20 12:03:13,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:14,343 INFO L130 PetriNetUnfolder]: 444/2791 cut-off events. [2022-11-20 12:03:14,343 INFO L131 PetriNetUnfolder]: For 870/870 co-relation queries the response was YES. [2022-11-20 12:03:14,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5425 conditions, 2791 events. 444/2791 cut-off events. For 870/870 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 22413 event pairs, 109 based on Foata normal form. 2/2399 useless extension candidates. Maximal degree in co-relation 2859. Up to 1267 conditions per place. [2022-11-20 12:03:14,365 INFO L137 encePairwiseOnDemand]: 127/142 looper letters, 37 selfloop transitions, 20 changer transitions 0/130 dead transitions. [2022-11-20 12:03:14,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 130 transitions, 504 flow [2022-11-20 12:03:14,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:03:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:03:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 452 transitions. [2022-11-20 12:03:14,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6366197183098592 [2022-11-20 12:03:14,368 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 452 transitions. [2022-11-20 12:03:14,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 452 transitions. [2022-11-20 12:03:14,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:14,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 452 transitions. [2022-11-20 12:03:14,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 12:03:14,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 12:03:14,372 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 12:03:14,372 INFO L175 Difference]: Start difference. First operand has 137 places, 127 transitions, 386 flow. Second operand 5 states and 452 transitions. [2022-11-20 12:03:14,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 130 transitions, 504 flow [2022-11-20 12:03:14,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 130 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:03:14,377 INFO L231 Difference]: Finished difference. Result has 132 places, 130 transitions, 446 flow [2022-11-20 12:03:14,378 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=132, PETRI_TRANSITIONS=130} [2022-11-20 12:03:14,378 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, -4 predicate places. [2022-11-20 12:03:14,378 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 130 transitions, 446 flow [2022-11-20 12:03:14,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states 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 12:03:14,379 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:14,379 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] [2022-11-20 12:03:14,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:03:14,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:14,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:14,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1305980392, now seen corresponding path program 1 times [2022-11-20 12:03:14,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:14,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904945544] [2022-11-20 12:03:14,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:14,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:14,459 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 12:03:14,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:14,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904945544] [2022-11-20 12:03:14,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904945544] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:03:14,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017417800] [2022-11-20 12:03:14,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:14,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:03:14,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:03:14,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:03:14,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:03:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:14,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:03:14,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:14,624 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 12:03:14,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:14,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017417800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:14,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:03:14,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:03:14,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653927916] [2022-11-20 12:03:14,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:14,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:03:14,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:14,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:03:14,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:03:14,628 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 142 [2022-11-20 12:03:14,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 130 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states 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 12:03:14,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:14,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 142 [2022-11-20 12:03:14,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:15,274 INFO L130 PetriNetUnfolder]: 444/2789 cut-off events. [2022-11-20 12:03:15,274 INFO L131 PetriNetUnfolder]: For 1997/1997 co-relation queries the response was YES. [2022-11-20 12:03:15,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6024 conditions, 2789 events. 444/2789 cut-off events. For 1997/1997 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 22375 event pairs, 10 based on Foata normal form. 2/2397 useless extension candidates. Maximal degree in co-relation 3161. Up to 909 conditions per place. [2022-11-20 12:03:15,303 INFO L137 encePairwiseOnDemand]: 129/142 looper letters, 63 selfloop transitions, 14 changer transitions 0/150 dead transitions. [2022-11-20 12:03:15,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 150 transitions, 674 flow [2022-11-20 12:03:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:03:15,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:03:15,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 638 transitions. [2022-11-20 12:03:15,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.641851106639839 [2022-11-20 12:03:15,309 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 638 transitions. [2022-11-20 12:03:15,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 638 transitions. [2022-11-20 12:03:15,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:15,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 638 transitions. [2022-11-20 12:03:15,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.14285714285714) internal successors, (638), 7 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:03:15,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states 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 12:03:15,316 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states 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 12:03:15,317 INFO L175 Difference]: Start difference. First operand has 132 places, 130 transitions, 446 flow. Second operand 7 states and 638 transitions. [2022-11-20 12:03:15,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 150 transitions, 674 flow [2022-11-20 12:03:15,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 150 transitions, 650 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:03:15,325 INFO L231 Difference]: Finished difference. Result has 134 places, 129 transitions, 446 flow [2022-11-20 12:03:15,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=446, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2022-11-20 12:03:15,327 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, -2 predicate places. [2022-11-20 12:03:15,327 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 446 flow [2022-11-20 12:03:15,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states 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 12:03:15,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:15,327 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] [2022-11-20 12:03:15,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:03:15,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:03:15,533 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:15,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:15,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1065731438, now seen corresponding path program 1 times [2022-11-20 12:03:15,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:15,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939586990] [2022-11-20 12:03:15,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:15,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:15,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:03:15,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:15,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939586990] [2022-11-20 12:03:15,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939586990] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:03:15,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202192230] [2022-11-20 12:03:15,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:15,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:03:15,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:03:15,625 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:03:15,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:03:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:15,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:03:15,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:03:15,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:03:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:03:15,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202192230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:03:15,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:03:15,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 12:03:15,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298824681] [2022-11-20 12:03:15,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:03:15,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:03:15,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:15,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:03:15,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:03:15,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 142 [2022-11-20 12:03:15,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 446 flow. Second operand has 10 states, 10 states have (on average 83.5) internal successors, (835), 10 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 12:03:15,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:15,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 142 [2022-11-20 12:03:15,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:16,491 INFO L130 PetriNetUnfolder]: 423/2503 cut-off events. [2022-11-20 12:03:16,492 INFO L131 PetriNetUnfolder]: For 1647/1647 co-relation queries the response was YES. [2022-11-20 12:03:16,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5493 conditions, 2503 events. 423/2503 cut-off events. For 1647/1647 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 19914 event pairs, 35 based on Foata normal form. 2/2157 useless extension candidates. Maximal degree in co-relation 5364. Up to 482 conditions per place. [2022-11-20 12:03:16,506 INFO L137 encePairwiseOnDemand]: 127/142 looper letters, 64 selfloop transitions, 21 changer transitions 0/158 dead transitions. [2022-11-20 12:03:16,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 158 transitions, 726 flow [2022-11-20 12:03:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:03:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:03:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 887 transitions. [2022-11-20 12:03:16,509 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6246478873239436 [2022-11-20 12:03:16,510 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 887 transitions. [2022-11-20 12:03:16,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 887 transitions. [2022-11-20 12:03:16,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:16,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 887 transitions. [2022-11-20 12:03:16,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 88.7) internal successors, (887), 10 states have internal predecessors, (887), 0 states have call successors, (0), 0 states 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 12:03:16,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states 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 12:03:16,516 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states 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 12:03:16,516 INFO L175 Difference]: Start difference. First operand has 134 places, 129 transitions, 446 flow. Second operand 10 states and 887 transitions. [2022-11-20 12:03:16,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 158 transitions, 726 flow [2022-11-20 12:03:16,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 158 transitions, 708 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 12:03:16,523 INFO L231 Difference]: Finished difference. Result has 143 places, 133 transitions, 526 flow [2022-11-20 12:03:16,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=526, PETRI_PLACES=143, PETRI_TRANSITIONS=133} [2022-11-20 12:03:16,524 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 7 predicate places. [2022-11-20 12:03:16,524 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 133 transitions, 526 flow [2022-11-20 12:03:16,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 83.5) internal successors, (835), 10 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 12:03:16,525 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:16,525 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] [2022-11-20 12:03:16,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:03:16,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:03:16,735 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:16,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:16,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1422189243, now seen corresponding path program 1 times [2022-11-20 12:03:16,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:16,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726396698] [2022-11-20 12:03:16,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:16,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:03:16,758 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:03:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:03:16,778 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:03:16,779 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:03:16,779 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-20 12:03:16,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-20 12:03:16,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-20 12:03:16,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-20 12:03:16,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-20 12:03:16,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-20 12:03:16,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-20 12:03:16,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-20 12:03:16,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-20 12:03:16,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-20 12:03:16,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:03:16,780 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-20 12:03:16,781 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:03:16,781 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-20 12:03:16,835 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-20 12:03:16,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 160 transitions, 432 flow [2022-11-20 12:03:18,546 INFO L130 PetriNetUnfolder]: 2379/10862 cut-off events. [2022-11-20 12:03:18,546 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-11-20 12:03:18,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13027 conditions, 10862 events. 2379/10862 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 100503 event pairs, 626 based on Foata normal form. 0/8690 useless extension candidates. Maximal degree in co-relation 6464. Up to 1024 conditions per place. [2022-11-20 12:03:18,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 160 transitions, 432 flow [2022-11-20 12:03:18,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 160 transitions, 432 flow [2022-11-20 12:03:18,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:03:18,673 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;@11ee980b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:03:18,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-20 12:03:18,677 INFO L130 PetriNetUnfolder]: 4/60 cut-off events. [2022-11-20 12:03:18,677 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:03:18,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:18,678 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] [2022-11-20 12:03:18,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:18,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:18,678 INFO L85 PathProgramCache]: Analyzing trace with hash 620781582, now seen corresponding path program 1 times [2022-11-20 12:03:18,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:18,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73273108] [2022-11-20 12:03:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:18,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:18,829 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 12:03:18,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:18,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73273108] [2022-11-20 12:03:18,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73273108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:18,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:18,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:03:18,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645622178] [2022-11-20 12:03:18,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:18,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:18,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:18,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:18,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:18,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-11-20 12:03:18,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 160 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 12:03:18,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:18,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-11-20 12:03:18,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:21,214 INFO L130 PetriNetUnfolder]: 2570/13543 cut-off events. [2022-11-20 12:03:21,214 INFO L131 PetriNetUnfolder]: For 3152/3152 co-relation queries the response was YES. [2022-11-20 12:03:21,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23829 conditions, 13543 events. 2570/13543 cut-off events. For 3152/3152 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 147664 event pairs, 152 based on Foata normal form. 8872/20287 useless extension candidates. Maximal degree in co-relation 11646. Up to 4858 conditions per place. [2022-11-20 12:03:21,323 INFO L137 encePairwiseOnDemand]: 136/160 looper letters, 79 selfloop transitions, 10 changer transitions 8/179 dead transitions. [2022-11-20 12:03:21,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 179 transitions, 698 flow [2022-11-20 12:03:21,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:03:21,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:03:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2022-11-20 12:03:21,326 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.69625 [2022-11-20 12:03:21,326 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2022-11-20 12:03:21,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2022-11-20 12:03:21,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:21,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2022-11-20 12:03:21,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 12:03:21,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states 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 12:03:21,331 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states 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 12:03:21,331 INFO L175 Difference]: Start difference. First operand has 153 places, 160 transitions, 432 flow. Second operand 5 states and 557 transitions. [2022-11-20 12:03:21,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 179 transitions, 698 flow [2022-11-20 12:03:21,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 179 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:03:21,338 INFO L231 Difference]: Finished difference. Result has 152 places, 142 transitions, 450 flow [2022-11-20 12:03:21,338 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=450, PETRI_PLACES=152, PETRI_TRANSITIONS=142} [2022-11-20 12:03:21,339 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, -1 predicate places. [2022-11-20 12:03:21,339 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 142 transitions, 450 flow [2022-11-20 12:03:21,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 12:03:21,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:21,340 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] [2022-11-20 12:03:21,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:03:21,340 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:21,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1880264199, now seen corresponding path program 1 times [2022-11-20 12:03:21,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:21,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682339916] [2022-11-20 12:03:21,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:21,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,397 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 12:03:21,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:21,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682339916] [2022-11-20 12:03:21,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682339916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:21,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:21,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:03:21,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550173461] [2022-11-20 12:03:21,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:21,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:21,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:21,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:21,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:21,400 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-11-20 12:03:21,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 142 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 12:03:21,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:21,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-11-20 12:03:21,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:23,644 INFO L130 PetriNetUnfolder]: 2570/11564 cut-off events. [2022-11-20 12:03:23,644 INFO L131 PetriNetUnfolder]: For 4233/4233 co-relation queries the response was YES. [2022-11-20 12:03:23,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23295 conditions, 11564 events. 2570/11564 cut-off events. For 4233/4233 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 118419 event pairs, 618 based on Foata normal form. 3/9967 useless extension candidates. Maximal degree in co-relation 12088. Up to 5766 conditions per place. [2022-11-20 12:03:23,745 INFO L137 encePairwiseOnDemand]: 145/160 looper letters, 43 selfloop transitions, 20 changer transitions 0/145 dead transitions. [2022-11-20 12:03:23,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 145 transitions, 580 flow [2022-11-20 12:03:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:03:23,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:03:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 503 transitions. [2022-11-20 12:03:23,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.62875 [2022-11-20 12:03:23,748 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 503 transitions. [2022-11-20 12:03:23,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 503 transitions. [2022-11-20 12:03:23,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:23,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 503 transitions. [2022-11-20 12:03:23,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.6) internal successors, (503), 5 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 12:03:23,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states 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 12:03:23,752 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states 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 12:03:23,753 INFO L175 Difference]: Start difference. First operand has 152 places, 142 transitions, 450 flow. Second operand 5 states and 503 transitions. [2022-11-20 12:03:23,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 145 transitions, 580 flow [2022-11-20 12:03:23,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 145 transitions, 572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:03:23,764 INFO L231 Difference]: Finished difference. Result has 147 places, 145 transitions, 510 flow [2022-11-20 12:03:23,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=147, PETRI_TRANSITIONS=145} [2022-11-20 12:03:23,765 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, -6 predicate places. [2022-11-20 12:03:23,765 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 145 transitions, 510 flow [2022-11-20 12:03:23,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.0) internal successors, (372), 4 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 12:03:23,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:23,765 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] [2022-11-20 12:03:23,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:03:23,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:23,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:23,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1841351296, now seen corresponding path program 1 times [2022-11-20 12:03:23,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:23,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417945040] [2022-11-20 12:03:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:23,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:23,837 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 12:03:23,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:23,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417945040] [2022-11-20 12:03:23,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417945040] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:03:23,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955842320] [2022-11-20 12:03:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:23,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:03:23,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:03:23,840 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:03:23,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:03:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:23,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:03:23,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:24,026 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 12:03:24,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:24,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955842320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:24,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:03:24,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:03:24,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815844099] [2022-11-20 12:03:24,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:24,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:03:24,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:24,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:03:24,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:03:24,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-11-20 12:03:24,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 145 transitions, 510 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states 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 12:03:24,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:24,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-11-20 12:03:24,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:26,182 INFO L130 PetriNetUnfolder]: 2570/11561 cut-off events. [2022-11-20 12:03:26,183 INFO L131 PetriNetUnfolder]: For 8768/8768 co-relation queries the response was YES. [2022-11-20 12:03:26,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25647 conditions, 11561 events. 2570/11561 cut-off events. For 8768/8768 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 118410 event pairs, 152 based on Foata normal form. 3/9964 useless extension candidates. Maximal degree in co-relation 13258. Up to 4303 conditions per place. [2022-11-20 12:03:26,288 INFO L137 encePairwiseOnDemand]: 147/160 looper letters, 73 selfloop transitions, 14 changer transitions 0/169 dead transitions. [2022-11-20 12:03:26,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 169 transitions, 778 flow [2022-11-20 12:03:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:03:26,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:03:26,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 711 transitions. [2022-11-20 12:03:26,292 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6348214285714285 [2022-11-20 12:03:26,292 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 711 transitions. [2022-11-20 12:03:26,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 711 transitions. [2022-11-20 12:03:26,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:26,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 711 transitions. [2022-11-20 12:03:26,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.57142857142857) internal successors, (711), 7 states have internal predecessors, (711), 0 states have call successors, (0), 0 states 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 12:03:26,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states 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 12:03:26,299 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states 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 12:03:26,299 INFO L175 Difference]: Start difference. First operand has 147 places, 145 transitions, 510 flow. Second operand 7 states and 711 transitions. [2022-11-20 12:03:26,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 169 transitions, 778 flow [2022-11-20 12:03:26,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 169 transitions, 754 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:03:26,320 INFO L231 Difference]: Finished difference. Result has 149 places, 144 transitions, 510 flow [2022-11-20 12:03:26,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=510, PETRI_PLACES=149, PETRI_TRANSITIONS=144} [2022-11-20 12:03:26,321 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, -4 predicate places. [2022-11-20 12:03:26,321 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 144 transitions, 510 flow [2022-11-20 12:03:26,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states 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 12:03:26,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:26,322 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] [2022-11-20 12:03:26,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:03:26,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 12:03:26,527 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:26,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:26,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1764503369, now seen corresponding path program 1 times [2022-11-20 12:03:26,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:26,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447723836] [2022-11-20 12:03:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:26,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:03:26,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:26,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447723836] [2022-11-20 12:03:26,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447723836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:03:26,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777503259] [2022-11-20 12:03:26,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:26,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:03:26,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:03:26,610 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:03:26,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:03:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:26,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:03:26,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:26,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:03:26,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:03:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:03:26,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777503259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:03:26,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:03:26,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-20 12:03:26,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736561232] [2022-11-20 12:03:26,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:03:26,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:03:26,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:26,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:03:26,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:03:26,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-11-20 12:03:26,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 144 transitions, 510 flow. Second operand has 10 states, 10 states have (on average 92.5) internal successors, (925), 10 states have internal predecessors, (925), 0 states have call successors, (0), 0 states 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 12:03:26,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:26,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-11-20 12:03:26,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:29,164 INFO L130 PetriNetUnfolder]: 2538/11157 cut-off events. [2022-11-20 12:03:29,164 INFO L131 PetriNetUnfolder]: For 7602/7602 co-relation queries the response was YES. [2022-11-20 12:03:29,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24922 conditions, 11157 events. 2538/11157 cut-off events. For 7602/7602 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 117293 event pairs, 214 based on Foata normal form. 2/9627 useless extension candidates. Maximal degree in co-relation 13282. Up to 2161 conditions per place. [2022-11-20 12:03:29,255 INFO L137 encePairwiseOnDemand]: 145/160 looper letters, 74 selfloop transitions, 21 changer transitions 0/177 dead transitions. [2022-11-20 12:03:29,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 177 transitions, 830 flow [2022-11-20 12:03:29,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:03:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 12:03:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 987 transitions. [2022-11-20 12:03:29,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.616875 [2022-11-20 12:03:29,259 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 987 transitions. [2022-11-20 12:03:29,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 987 transitions. [2022-11-20 12:03:29,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:29,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 987 transitions. [2022-11-20 12:03:29,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 98.7) internal successors, (987), 10 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 12:03:29,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states 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 12:03:29,267 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states 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 12:03:29,267 INFO L175 Difference]: Start difference. First operand has 149 places, 144 transitions, 510 flow. Second operand 10 states and 987 transitions. [2022-11-20 12:03:29,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 177 transitions, 830 flow [2022-11-20 12:03:29,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 177 transitions, 812 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 12:03:29,284 INFO L231 Difference]: Finished difference. Result has 158 places, 148 transitions, 590 flow [2022-11-20 12:03:29,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=590, PETRI_PLACES=158, PETRI_TRANSITIONS=148} [2022-11-20 12:03:29,287 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 5 predicate places. [2022-11-20 12:03:29,287 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 148 transitions, 590 flow [2022-11-20 12:03:29,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 92.5) internal successors, (925), 10 states have internal predecessors, (925), 0 states have call successors, (0), 0 states 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 12:03:29,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:29,288 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 12:03:29,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:03:29,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:03:29,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:29,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:29,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1792905212, now seen corresponding path program 1 times [2022-11-20 12:03:29,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:29,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219883496] [2022-11-20 12:03:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:29,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:29,593 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 12:03:29,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:29,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219883496] [2022-11-20 12:03:29,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219883496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:29,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:29,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:03:29,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995376885] [2022-11-20 12:03:29,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:29,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:29,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:29,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:29,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 160 [2022-11-20 12:03:29,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 148 transitions, 590 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 12:03:29,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:29,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 160 [2022-11-20 12:03:29,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:31,599 INFO L130 PetriNetUnfolder]: 2538/11153 cut-off events. [2022-11-20 12:03:31,599 INFO L131 PetriNetUnfolder]: For 14122/14122 co-relation queries the response was YES. [2022-11-20 12:03:31,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27264 conditions, 11153 events. 2538/11153 cut-off events. For 14122/14122 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 117308 event pairs, 214 based on Foata normal form. 0/9625 useless extension candidates. Maximal degree in co-relation 14480. Up to 4554 conditions per place. [2022-11-20 12:03:31,925 INFO L137 encePairwiseOnDemand]: 148/160 looper letters, 82 selfloop transitions, 10 changer transitions 0/174 dead transitions. [2022-11-20 12:03:31,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 174 transitions, 874 flow [2022-11-20 12:03:31,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:03:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:03:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 536 transitions. [2022-11-20 12:03:31,929 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.67 [2022-11-20 12:03:31,929 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 536 transitions. [2022-11-20 12:03:31,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 536 transitions. [2022-11-20 12:03:31,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:31,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 536 transitions. [2022-11-20 12:03:31,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 0 states have call successors, (0), 0 states 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 12:03:31,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states 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 12:03:31,936 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states 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 12:03:31,936 INFO L175 Difference]: Start difference. First operand has 158 places, 148 transitions, 590 flow. Second operand 5 states and 536 transitions. [2022-11-20 12:03:31,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 174 transitions, 874 flow [2022-11-20 12:03:31,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 174 transitions, 850 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-20 12:03:31,971 INFO L231 Difference]: Finished difference. Result has 161 places, 150 transitions, 610 flow [2022-11-20 12:03:31,972 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=610, PETRI_PLACES=161, PETRI_TRANSITIONS=150} [2022-11-20 12:03:31,972 INFO L288 CegarLoopForPetriNet]: 153 programPoint places, 8 predicate places. [2022-11-20 12:03:31,973 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 150 transitions, 610 flow [2022-11-20 12:03:31,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 12:03:31,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:31,974 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 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 12:03:31,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:03:31,974 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:31,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:31,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1648976718, now seen corresponding path program 1 times [2022-11-20 12:03:31,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:31,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131361451] [2022-11-20 12:03:31,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:31,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:03:32,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:03:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:03:32,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:03:32,028 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:03:32,028 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-20 12:03:32,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-20 12:03:32,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-20 12:03:32,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-20 12:03:32,029 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-20 12:03:32,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-20 12:03:32,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-20 12:03:32,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-20 12:03:32,030 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-20 12:03:32,031 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-20 12:03:32,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:03:32,031 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 12:03:32,032 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 12:03:32,032 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-20 12:03:32,073 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-11-20 12:03:32,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 506 flow [2022-11-20 12:03:39,334 INFO L130 PetriNetUnfolder]: 11372/43900 cut-off events. [2022-11-20 12:03:39,334 INFO L131 PetriNetUnfolder]: For 10450/10450 co-relation queries the response was YES. [2022-11-20 12:03:39,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54326 conditions, 43900 events. 11372/43900 cut-off events. For 10450/10450 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 511238 event pairs, 4296 based on Foata normal form. 0/35528 useless extension candidates. Maximal degree in co-relation 26480. Up to 5120 conditions per place. [2022-11-20 12:03:39,781 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 178 transitions, 506 flow [2022-11-20 12:03:39,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 178 transitions, 506 flow [2022-11-20 12:03:39,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:03:39,968 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;@11ee980b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:03:39,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-20 12:03:39,972 INFO L130 PetriNetUnfolder]: 4/58 cut-off events. [2022-11-20 12:03:39,973 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:03:39,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:39,973 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] [2022-11-20 12:03:39,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:39,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:39,974 INFO L85 PathProgramCache]: Analyzing trace with hash -852823862, now seen corresponding path program 1 times [2022-11-20 12:03:39,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:39,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971073896] [2022-11-20 12:03:39,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:39,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:40,024 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 12:03:40,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:40,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971073896] [2022-11-20 12:03:40,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971073896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:40,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:40,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:03:40,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171981903] [2022-11-20 12:03:40,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:40,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:40,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:40,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:40,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:40,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2022-11-20 12:03:40,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 178 transitions, 506 flow. Second operand has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:03:40,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:40,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2022-11-20 12:03:40,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:03:50,283 INFO L130 PetriNetUnfolder]: 13354/56295 cut-off events. [2022-11-20 12:03:50,283 INFO L131 PetriNetUnfolder]: For 15570/15570 co-relation queries the response was YES. [2022-11-20 12:03:50,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102968 conditions, 56295 events. 13354/56295 cut-off events. For 15570/15570 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 729992 event pairs, 1312 based on Foata normal form. 44070/91985 useless extension candidates. Maximal degree in co-relation 49809. Up to 21536 conditions per place. [2022-11-20 12:03:51,142 INFO L137 encePairwiseOnDemand]: 153/178 looper letters, 89 selfloop transitions, 10 changer transitions 8/198 dead transitions. [2022-11-20 12:03:51,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 198 transitions, 806 flow [2022-11-20 12:03:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:03:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:03:51,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 614 transitions. [2022-11-20 12:03:51,144 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6898876404494382 [2022-11-20 12:03:51,145 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 614 transitions. [2022-11-20 12:03:51,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 614 transitions. [2022-11-20 12:03:51,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:03:51,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 614 transitions. [2022-11-20 12:03:51,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 0 states 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 12:03:51,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 12:03:51,150 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 12:03:51,150 INFO L175 Difference]: Start difference. First operand has 170 places, 178 transitions, 506 flow. Second operand 5 states and 614 transitions. [2022-11-20 12:03:51,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 198 transitions, 806 flow [2022-11-20 12:03:51,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 198 transitions, 806 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:03:51,173 INFO L231 Difference]: Finished difference. Result has 167 places, 157 transitions, 518 flow [2022-11-20 12:03:51,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=167, PETRI_TRANSITIONS=157} [2022-11-20 12:03:51,174 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-11-20 12:03:51,174 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 157 transitions, 518 flow [2022-11-20 12:03:51,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 12:03:51,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:03:51,175 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] [2022-11-20 12:03:51,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:03:51,176 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:03:51,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:51,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1910701361, now seen corresponding path program 1 times [2022-11-20 12:03:51,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:51,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083018130] [2022-11-20 12:03:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:51,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:51,219 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 12:03:51,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:51,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083018130] [2022-11-20 12:03:51,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083018130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:51,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:51,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:03:51,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655545630] [2022-11-20 12:03:51,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:51,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:51,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:51,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:51,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:51,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2022-11-20 12:03:51,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 157 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 12:03:51,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:03:51,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2022-11-20 12:03:51,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:04:00,375 INFO L130 PetriNetUnfolder]: 13354/48187 cut-off events. [2022-11-20 12:04:00,376 INFO L131 PetriNetUnfolder]: For 19782/19782 co-relation queries the response was YES. [2022-11-20 12:04:00,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100281 conditions, 48187 events. 13354/48187 cut-off events. For 19782/19782 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 582734 event pairs, 3293 based on Foata normal form. 4/41885 useless extension candidates. Maximal degree in co-relation 52032. Up to 25869 conditions per place. [2022-11-20 12:04:00,930 INFO L137 encePairwiseOnDemand]: 163/178 looper letters, 49 selfloop transitions, 20 changer transitions 0/160 dead transitions. [2022-11-20 12:04:00,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 160 transitions, 660 flow [2022-11-20 12:04:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:04:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:04:00,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2022-11-20 12:04:00,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6224719101123596 [2022-11-20 12:04:00,933 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2022-11-20 12:04:00,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2022-11-20 12:04:00,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:04:00,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2022-11-20 12:04:00,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states 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 12:04:00,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 12:04:00,937 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 12:04:00,938 INFO L175 Difference]: Start difference. First operand has 167 places, 157 transitions, 518 flow. Second operand 5 states and 554 transitions. [2022-11-20 12:04:00,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 160 transitions, 660 flow [2022-11-20 12:04:00,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 160 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:04:00,997 INFO L231 Difference]: Finished difference. Result has 162 places, 160 transitions, 578 flow [2022-11-20 12:04:00,998 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=162, PETRI_TRANSITIONS=160} [2022-11-20 12:04:00,999 INFO L288 CegarLoopForPetriNet]: 170 programPoint places, -8 predicate places. [2022-11-20 12:04:00,999 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 160 transitions, 578 flow [2022-11-20 12:04:00,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 12:04:01,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:04:01,000 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] [2022-11-20 12:04:01,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:04:01,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-20 12:04:01,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:04:01,001 INFO L85 PathProgramCache]: Analyzing trace with hash 897800808, now seen corresponding path program 1 times [2022-11-20 12:04:01,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:04:01,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354119865] [2022-11-20 12:04:01,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:01,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:04:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:01,087 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 12:04:01,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:04:01,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354119865] [2022-11-20 12:04:01,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354119865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:04:01,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538022087] [2022-11-20 12:04:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:04:01,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:04:01,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:04:01,090 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:04:01,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc5de04-2d9d-4697-af88-e37d7defc958/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:04:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:04:01,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:04:01,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:04:01,278 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 12:04:01,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:04:01,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538022087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:04:01,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:04:01,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:04:01,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453119159] [2022-11-20 12:04:01,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:04:01,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:04:01,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:04:01,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:04:01,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:04:01,282 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 178 [2022-11-20 12:04:01,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 160 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 100.83333333333333) internal successors, (605), 6 states have internal predecessors, (605), 0 states have call successors, (0), 0 states 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 12:04:01,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:04:01,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 178 [2022-11-20 12:04:01,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand