./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/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_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/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_1637ead0-c507-4e5a-97b3-f0d6db99905e/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 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:49:39,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:49:39,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:49:39,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:49:39,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:49:39,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:49:39,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:49:39,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:49:39,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:49:39,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:49:39,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:49:39,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:49:39,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:49:39,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:49:39,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:49:39,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:49:39,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:49:39,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:49:39,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:49:39,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:49:39,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:49:39,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:49:39,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:49:39,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:49:39,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:49:39,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:49:39,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:49:39,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:49:39,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:49:39,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:49:39,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:49:39,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:49:39,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:49:39,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:49:39,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:49:39,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:49:39,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:49:39,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:49:39,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:49:39,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:49:39,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:49:39,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:49:39,573 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:49:39,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:49:39,574 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:49:39,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:49:39,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:49:39,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:49:39,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:49:39,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:49:39,576 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:49:39,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:49:39,578 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:49:39,578 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:49:39,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:49:39,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:49:39,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:49:39,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:49:39,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:49:39,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:49:39,580 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:49:39,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:49:39,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:49:39,580 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:49:39,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:49:39,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:49:39,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:49:39,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:49:39,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:49:39,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:49:39,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:49:39,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:49:39,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:49:39,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:49:39,583 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:49:39,584 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:49:39,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:49:39,584 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_1637ead0-c507-4e5a-97b3-f0d6db99905e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df [2022-11-20 10:49:39,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:49:39,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:49:39,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:49:39,853 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:49:39,853 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:49:39,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2022-11-20 10:49:42,872 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:49:43,115 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:49:43,116 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i [2022-11-20 10:49:43,132 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/data/fbbe12c9d/50e56332efed427b8c9dc0edd1474201/FLAGc4655738e [2022-11-20 10:49:43,146 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/data/fbbe12c9d/50e56332efed427b8c9dc0edd1474201 [2022-11-20 10:49:43,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:49:43,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:49:43,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:43,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:49:43,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:49:43,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:43" (1/1) ... [2022-11-20 10:49:43,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27202aa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43, skipping insertion in model container [2022-11-20 10:49:43,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:43" (1/1) ... [2022-11-20 10:49:43,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:49:43,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:49:43,583 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_1637ead0-c507-4e5a-97b3-f0d6db99905e/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] [2022-11-20 10:49:43,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:43,636 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:49:43,699 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_1637ead0-c507-4e5a-97b3-f0d6db99905e/sv-benchmarks/c/goblint-regression/28-race_reach_11-ptr_racing.i[30176,30189] [2022-11-20 10:49:43,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:49:43,767 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:49:43,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43 WrapperNode [2022-11-20 10:49:43,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:49:43,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:49:43,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:49:43,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:49:43,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43" (1/1) ... [2022-11-20 10:49:43,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43" (1/1) ... [2022-11-20 10:49:43,849 INFO L138 Inliner]: procedures = 170, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2022-11-20 10:49:43,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:49:43,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:49:43,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:49:43,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:49:43,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43" (1/1) ... [2022-11-20 10:49:43,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43" (1/1) ... [2022-11-20 10:49:43,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43" (1/1) ... [2022-11-20 10:49:43,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43" (1/1) ... [2022-11-20 10:49:43,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43" (1/1) ... [2022-11-20 10:49:43,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43" (1/1) ... [2022-11-20 10:49:43,899 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43" (1/1) ... [2022-11-20 10:49:43,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43" (1/1) ... [2022-11-20 10:49:43,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:49:43,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:49:43,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:49:43,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:49:43,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43" (1/1) ... [2022-11-20 10:49:43,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:49:43,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:43,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:49:43,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:49:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:49:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:49:43,998 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:49:43,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:49:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:49:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 10:49:44,000 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 10:49:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:49:44,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:49:44,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:49:44,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:49:44,002 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:49:44,169 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:49:44,171 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:49:44,472 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:49:44,480 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:49:44,480 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 10:49:44,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:44 BoogieIcfgContainer [2022-11-20 10:49:44,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:49:44,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:49:44,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:49:44,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:49:44,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:49:43" (1/3) ... [2022-11-20 10:49:44,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ddbe0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:49:44, skipping insertion in model container [2022-11-20 10:49:44,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:43" (2/3) ... [2022-11-20 10:49:44,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ddbe0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:49:44, skipping insertion in model container [2022-11-20 10:49:44,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:44" (3/3) ... [2022-11-20 10:49:44,492 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2022-11-20 10:49:44,501 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:49:44,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:49:44,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 10:49:44,513 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:49:44,572 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 10:49:44,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 136 transitions, 280 flow [2022-11-20 10:49:44,737 INFO L130 PetriNetUnfolder]: 17/173 cut-off events. [2022-11-20 10:49:44,737 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 10:49:44,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 173 events. 17/173 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 417 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2022-11-20 10:49:44,745 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 136 transitions, 280 flow [2022-11-20 10:49:44,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 133 transitions, 274 flow [2022-11-20 10:49:44,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:49:44,767 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;@307fc127, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:49:44,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 10:49:44,783 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-20 10:49:44,783 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:49:44,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:44,785 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:44,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:49:44,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:44,790 INFO L85 PathProgramCache]: Analyzing trace with hash -208936628, now seen corresponding path program 1 times [2022-11-20 10:49:44,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:44,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816832811] [2022-11-20 10:49:44,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:44,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:45,310 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 10:49:45,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:45,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816832811] [2022-11-20 10:49:45,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816832811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:45,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:45,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:45,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591589825] [2022-11-20 10:49:45,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:45,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:49:45,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:45,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:49:45,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:49:45,394 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 136 [2022-11-20 10:49:45,402 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 133 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:45,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:45,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 136 [2022-11-20 10:49:45,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:45,529 INFO L130 PetriNetUnfolder]: 0/123 cut-off events. [2022-11-20 10:49:45,529 INFO L131 PetriNetUnfolder]: For 3/12 co-relation queries the response was YES. [2022-11-20 10:49:45,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 123 events. 0/123 cut-off events. For 3/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 38/153 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-11-20 10:49:45,531 INFO L137 encePairwiseOnDemand]: 118/136 looper letters, 10 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2022-11-20 10:49:45,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 121 transitions, 278 flow [2022-11-20 10:49:45,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:49:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:49:45,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 597 transitions. [2022-11-20 10:49:45,549 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8779411764705882 [2022-11-20 10:49:45,550 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 597 transitions. [2022-11-20 10:49:45,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 597 transitions. [2022-11-20 10:49:45,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:45,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 597 transitions. [2022-11-20 10:49:45,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.4) internal successors, (597), 5 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:45,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:45,573 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:45,575 INFO L175 Difference]: Start difference. First operand has 125 places, 133 transitions, 274 flow. Second operand 5 states and 597 transitions. [2022-11-20 10:49:45,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 121 transitions, 278 flow [2022-11-20 10:49:45,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 121 transitions, 278 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:49:45,583 INFO L231 Difference]: Finished difference. Result has 127 places, 119 transitions, 258 flow [2022-11-20 10:49:45,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=127, PETRI_TRANSITIONS=119} [2022-11-20 10:49:45,592 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 2 predicate places. [2022-11-20 10:49:45,592 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 119 transitions, 258 flow [2022-11-20 10:49:45,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:45,593 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:45,593 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:45,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:49:45,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:49:45,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:45,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1654937315, now seen corresponding path program 1 times [2022-11-20 10:49:45,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:45,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408705976] [2022-11-20 10:49:45,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:45,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:46,397 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 10:49:46,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:46,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408705976] [2022-11-20 10:49:46,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408705976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:46,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:46,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:49:46,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107339627] [2022-11-20 10:49:46,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:46,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:49:46,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:46,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:49:46,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:49:46,404 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 136 [2022-11-20 10:49:46,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 119 transitions, 258 flow. Second operand has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:46,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:46,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 136 [2022-11-20 10:49:46,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:47,045 INFO L130 PetriNetUnfolder]: 104/541 cut-off events. [2022-11-20 10:49:47,046 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 10:49:47,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 541 events. 104/541 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3016 event pairs, 10 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 754. Up to 89 conditions per place. [2022-11-20 10:49:47,057 INFO L137 encePairwiseOnDemand]: 120/136 looper letters, 93 selfloop transitions, 30 changer transitions 2/190 dead transitions. [2022-11-20 10:49:47,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 190 transitions, 650 flow [2022-11-20 10:49:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 10:49:47,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-20 10:49:47,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1461 transitions. [2022-11-20 10:49:47,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5654024767801857 [2022-11-20 10:49:47,068 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1461 transitions. [2022-11-20 10:49:47,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1461 transitions. [2022-11-20 10:49:47,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:47,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1461 transitions. [2022-11-20 10:49:47,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 76.89473684210526) internal successors, (1461), 19 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 136.0) internal successors, (2720), 20 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,118 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 136.0) internal successors, (2720), 20 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,118 INFO L175 Difference]: Start difference. First operand has 127 places, 119 transitions, 258 flow. Second operand 19 states and 1461 transitions. [2022-11-20 10:49:47,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 190 transitions, 650 flow [2022-11-20 10:49:47,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 190 transitions, 642 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:49:47,127 INFO L231 Difference]: Finished difference. Result has 150 places, 142 transitions, 432 flow [2022-11-20 10:49:47,127 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=432, PETRI_PLACES=150, PETRI_TRANSITIONS=142} [2022-11-20 10:49:47,128 INFO L288 CegarLoopForPetriNet]: 125 programPoint places, 25 predicate places. [2022-11-20 10:49:47,128 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 142 transitions, 432 flow [2022-11-20 10:49:47,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:47,131 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:47,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:49:47,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:49:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:47,134 INFO L85 PathProgramCache]: Analyzing trace with hash 343293665, now seen corresponding path program 1 times [2022-11-20 10:49:47,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:47,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73491187] [2022-11-20 10:49:47,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:47,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:47,178 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:49:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:49:47,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:49:47,232 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:49:47,234 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-20 10:49:47,237 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-20 10:49:47,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-20 10:49:47,238 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-20 10:49:47,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-20 10:49:47,239 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-20 10:49:47,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-20 10:49:47,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-20 10:49:47,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-20 10:49:47,240 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-20 10:49:47,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-20 10:49:47,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-20 10:49:47,241 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-20 10:49:47,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:49:47,242 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-20 10:49:47,247 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:49:47,247 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 10:49:47,295 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:49:47,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 179 transitions, 376 flow [2022-11-20 10:49:47,357 INFO L130 PetriNetUnfolder]: 31/290 cut-off events. [2022-11-20 10:49:47,357 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 10:49:47,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 290 events. 31/290 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 906 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 175. Up to 8 conditions per place. [2022-11-20 10:49:47,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 179 transitions, 376 flow [2022-11-20 10:49:47,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 179 transitions, 376 flow [2022-11-20 10:49:47,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:49:47,372 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;@307fc127, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:49:47,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 10:49:47,382 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-20 10:49:47,382 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:49:47,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:47,382 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:47,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:47,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:47,383 INFO L85 PathProgramCache]: Analyzing trace with hash 889630472, now seen corresponding path program 1 times [2022-11-20 10:49:47,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:47,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972722926] [2022-11-20 10:49:47,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:47,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:47,509 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 10:49:47,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:47,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972722926] [2022-11-20 10:49:47,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972722926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:47,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:47,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:47,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117666234] [2022-11-20 10:49:47,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:47,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:49:47,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:47,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:49:47,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:49:47,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-11-20 10:49:47,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 179 transitions, 376 flow. Second operand has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:47,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-11-20 10:49:47,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:47,624 INFO L130 PetriNetUnfolder]: 2/239 cut-off events. [2022-11-20 10:49:47,624 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-20 10:49:47,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 239 events. 2/239 cut-off events. For 45/125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 553 event pairs, 0 based on Foata normal form. 114/329 useless extension candidates. Maximal degree in co-relation 150. Up to 21 conditions per place. [2022-11-20 10:49:47,626 INFO L137 encePairwiseOnDemand]: 155/179 looper letters, 19 selfloop transitions, 4 changer transitions 0/168 dead transitions. [2022-11-20 10:49:47,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 168 transitions, 400 flow [2022-11-20 10:49:47,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:49:47,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:49:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 787 transitions. [2022-11-20 10:49:47,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8793296089385475 [2022-11-20 10:49:47,631 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 787 transitions. [2022-11-20 10:49:47,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 787 transitions. [2022-11-20 10:49:47,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:47,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 787 transitions. [2022-11-20 10:49:47,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.4) internal successors, (787), 5 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,637 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,638 INFO L175 Difference]: Start difference. First operand has 165 places, 179 transitions, 376 flow. Second operand 5 states and 787 transitions. [2022-11-20 10:49:47,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 168 transitions, 400 flow [2022-11-20 10:49:47,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 168 transitions, 400 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:49:47,645 INFO L231 Difference]: Finished difference. Result has 171 places, 164 transitions, 372 flow [2022-11-20 10:49:47,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=171, PETRI_TRANSITIONS=164} [2022-11-20 10:49:47,646 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 6 predicate places. [2022-11-20 10:49:47,646 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 164 transitions, 372 flow [2022-11-20 10:49:47,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:47,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:47,647 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:47,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:49:47,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:47,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:47,649 INFO L85 PathProgramCache]: Analyzing trace with hash -847366919, now seen corresponding path program 1 times [2022-11-20 10:49:47,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:47,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619231192] [2022-11-20 10:49:47,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:47,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:48,184 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 10:49:48,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:48,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619231192] [2022-11-20 10:49:48,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619231192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:48,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:48,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:49:48,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619423487] [2022-11-20 10:49:48,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:48,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:49:48,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:48,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:49:48,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:49:48,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 179 [2022-11-20 10:49:48,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 164 transitions, 372 flow. Second operand has 12 states, 12 states have (on average 99.0) internal successors, (1188), 12 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:48,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:48,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 179 [2022-11-20 10:49:48,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:51,034 INFO L130 PetriNetUnfolder]: 4267/11498 cut-off events. [2022-11-20 10:49:51,034 INFO L131 PetriNetUnfolder]: For 204/204 co-relation queries the response was YES. [2022-11-20 10:49:51,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18673 conditions, 11498 events. 4267/11498 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 119103 event pairs, 1071 based on Foata normal form. 0/10520 useless extension candidates. Maximal degree in co-relation 18575. Up to 3131 conditions per place. [2022-11-20 10:49:51,133 INFO L137 encePairwiseOnDemand]: 162/179 looper letters, 262 selfloop transitions, 50 changer transitions 0/411 dead transitions. [2022-11-20 10:49:51,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 411 transitions, 1539 flow [2022-11-20 10:49:51,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:49:51,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 10:49:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2532 transitions. [2022-11-20 10:49:51,141 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6150109302890454 [2022-11-20 10:49:51,141 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2532 transitions. [2022-11-20 10:49:51,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2532 transitions. [2022-11-20 10:49:51,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:51,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2532 transitions. [2022-11-20 10:49:51,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 110.08695652173913) internal successors, (2532), 23 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 179.0) internal successors, (4296), 24 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,160 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 179.0) internal successors, (4296), 24 states have internal predecessors, (4296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,160 INFO L175 Difference]: Start difference. First operand has 171 places, 164 transitions, 372 flow. Second operand 23 states and 2532 transitions. [2022-11-20 10:49:51,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 411 transitions, 1539 flow [2022-11-20 10:49:51,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 411 transitions, 1537 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:49:51,173 INFO L231 Difference]: Finished difference. Result has 208 places, 220 transitions, 760 flow [2022-11-20 10:49:51,174 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=760, PETRI_PLACES=208, PETRI_TRANSITIONS=220} [2022-11-20 10:49:51,176 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 43 predicate places. [2022-11-20 10:49:51,176 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 220 transitions, 760 flow [2022-11-20 10:49:51,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 99.0) internal successors, (1188), 12 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,177 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:51,177 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:51,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:49:51,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:51,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:51,178 INFO L85 PathProgramCache]: Analyzing trace with hash 615260129, now seen corresponding path program 1 times [2022-11-20 10:49:51,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:51,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444637012] [2022-11-20 10:49:51,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:51,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,240 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 10:49:51,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:51,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444637012] [2022-11-20 10:49:51,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444637012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:51,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:49:51,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:49:51,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206356130] [2022-11-20 10:49:51,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:51,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:49:51,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:51,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:49:51,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:49:51,245 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-11-20 10:49:51,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 220 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:51,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-11-20 10:49:51,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:51,565 INFO L130 PetriNetUnfolder]: 113/1316 cut-off events. [2022-11-20 10:49:51,565 INFO L131 PetriNetUnfolder]: For 1393/1602 co-relation queries the response was YES. [2022-11-20 10:49:51,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2278 conditions, 1316 events. 113/1316 cut-off events. For 1393/1602 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9963 event pairs, 25 based on Foata normal form. 62/1263 useless extension candidates. Maximal degree in co-relation 2152. Up to 89 conditions per place. [2022-11-20 10:49:51,584 INFO L137 encePairwiseOnDemand]: 173/179 looper letters, 14 selfloop transitions, 8 changer transitions 0/220 dead transitions. [2022-11-20 10:49:51,585 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 220 transitions, 802 flow [2022-11-20 10:49:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:49:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:49:51,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2022-11-20 10:49:51,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.829050279329609 [2022-11-20 10:49:51,588 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2022-11-20 10:49:51,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2022-11-20 10:49:51,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:51,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2022-11-20 10:49:51,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,594 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,594 INFO L175 Difference]: Start difference. First operand has 208 places, 220 transitions, 760 flow. Second operand 5 states and 742 transitions. [2022-11-20 10:49:51,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 220 transitions, 802 flow [2022-11-20 10:49:51,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 220 transitions, 799 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:49:51,608 INFO L231 Difference]: Finished difference. Result has 210 places, 220 transitions, 777 flow [2022-11-20 10:49:51,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=777, PETRI_PLACES=210, PETRI_TRANSITIONS=220} [2022-11-20 10:49:51,609 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 45 predicate places. [2022-11-20 10:49:51,610 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 220 transitions, 777 flow [2022-11-20 10:49:51,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:51,611 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:51,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:49:51,611 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:51,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:51,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1893195276, now seen corresponding path program 1 times [2022-11-20 10:49:51,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:51,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465916932] [2022-11-20 10:49:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:51,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,701 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 10:49:51,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:51,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465916932] [2022-11-20 10:49:51,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465916932] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:51,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287578830] [2022-11-20 10:49:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:51,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:51,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:51,706 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:51,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:49:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:51,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:49:51,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:51,962 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 10:49:51,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:49:51,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287578830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:49:51,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:49:51,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:49:51,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743751097] [2022-11-20 10:49:51,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:49:51,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:49:51,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:51,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:49:51,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:49:51,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 179 [2022-11-20 10:49:51,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 220 transitions, 777 flow. Second operand has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:51,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:51,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 179 [2022-11-20 10:49:51,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:52,355 INFO L130 PetriNetUnfolder]: 110/1315 cut-off events. [2022-11-20 10:49:52,355 INFO L131 PetriNetUnfolder]: For 1362/1504 co-relation queries the response was YES. [2022-11-20 10:49:52,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 1315 events. 110/1315 cut-off events. For 1362/1504 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9995 event pairs, 21 based on Foata normal form. 30/1230 useless extension candidates. Maximal degree in co-relation 2158. Up to 86 conditions per place. [2022-11-20 10:49:52,372 INFO L137 encePairwiseOnDemand]: 174/179 looper letters, 18 selfloop transitions, 6 changer transitions 0/222 dead transitions. [2022-11-20 10:49:52,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 222 transitions, 833 flow [2022-11-20 10:49:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:49:52,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:49:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1037 transitions. [2022-11-20 10:49:52,375 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8276137270550679 [2022-11-20 10:49:52,376 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1037 transitions. [2022-11-20 10:49:52,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1037 transitions. [2022-11-20 10:49:52,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:52,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1037 transitions. [2022-11-20 10:49:52,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:52,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:52,383 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:52,383 INFO L175 Difference]: Start difference. First operand has 210 places, 220 transitions, 777 flow. Second operand 7 states and 1037 transitions. [2022-11-20 10:49:52,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 222 transitions, 833 flow [2022-11-20 10:49:52,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 222 transitions, 821 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:49:52,396 INFO L231 Difference]: Finished difference. Result has 212 places, 219 transitions, 773 flow [2022-11-20 10:49:52,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=761, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=773, PETRI_PLACES=212, PETRI_TRANSITIONS=219} [2022-11-20 10:49:52,397 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 47 predicate places. [2022-11-20 10:49:52,397 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 219 transitions, 773 flow [2022-11-20 10:49:52,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.66666666666666) internal successors, (886), 6 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:52,398 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:52,398 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:52,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:49:52,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:52,605 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:49:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:49:52,605 INFO L85 PathProgramCache]: Analyzing trace with hash 219872843, now seen corresponding path program 1 times [2022-11-20 10:49:52,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:49:52,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052653318] [2022-11-20 10:49:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:52,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:49:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:49:53,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:49:53,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052653318] [2022-11-20 10:49:53,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052653318] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:49:53,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013562103] [2022-11-20 10:49:53,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:49:53,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:49:53,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:49:53,120 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:49:53,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:49:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:49:53,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:49:53,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:49:53,663 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:49:53,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 10:49:53,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:49:53,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:49:53,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 10:49:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 10:49:54,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:49:54,140 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_70 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_70) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2022-11-20 10:49:54,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-20 10:49:54,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 10:49:54,482 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 10:49:54,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-20 10:49:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-11-20 10:49:54,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013562103] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:49:54,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:49:54,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2022-11-20 10:49:54,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325629211] [2022-11-20 10:49:54,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:49:54,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 10:49:54,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:49:54,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 10:49:54,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=601, Unknown=8, NotChecked=50, Total=756 [2022-11-20 10:49:54,511 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 179 [2022-11-20 10:49:54,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 219 transitions, 773 flow. Second operand has 28 states, 28 states have (on average 99.35714285714286) internal successors, (2782), 28 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:54,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:49:54,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 179 [2022-11-20 10:49:54,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:49:59,382 INFO L130 PetriNetUnfolder]: 5947/16373 cut-off events. [2022-11-20 10:49:59,382 INFO L131 PetriNetUnfolder]: For 22773/23179 co-relation queries the response was YES. [2022-11-20 10:49:59,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36528 conditions, 16373 events. 5947/16373 cut-off events. For 22773/23179 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 180148 event pairs, 580 based on Foata normal form. 328/15563 useless extension candidates. Maximal degree in co-relation 35814. Up to 2339 conditions per place. [2022-11-20 10:49:59,666 INFO L137 encePairwiseOnDemand]: 159/179 looper letters, 326 selfloop transitions, 115 changer transitions 0/539 dead transitions. [2022-11-20 10:49:59,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 539 transitions, 2859 flow [2022-11-20 10:49:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 10:49:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 10:49:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3182 transitions. [2022-11-20 10:49:59,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6129840107879021 [2022-11-20 10:49:59,674 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3182 transitions. [2022-11-20 10:49:59,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3182 transitions. [2022-11-20 10:49:59,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:49:59,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3182 transitions. [2022-11-20 10:49:59,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 109.72413793103448) internal successors, (3182), 29 states have internal predecessors, (3182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:59,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 179.0) internal successors, (5370), 30 states have internal predecessors, (5370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:59,697 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 179.0) internal successors, (5370), 30 states have internal predecessors, (5370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:59,698 INFO L175 Difference]: Start difference. First operand has 212 places, 219 transitions, 773 flow. Second operand 29 states and 3182 transitions. [2022-11-20 10:49:59,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 539 transitions, 2859 flow [2022-11-20 10:49:59,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 539 transitions, 2848 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 10:49:59,930 INFO L231 Difference]: Finished difference. Result has 251 places, 282 transitions, 1538 flow [2022-11-20 10:49:59,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1538, PETRI_PLACES=251, PETRI_TRANSITIONS=282} [2022-11-20 10:49:59,932 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 86 predicate places. [2022-11-20 10:49:59,932 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 282 transitions, 1538 flow [2022-11-20 10:49:59,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 99.35714285714286) internal successors, (2782), 28 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:49:59,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:49:59,934 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:49:59,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:00,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 10:50:00,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:50:00,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:00,149 INFO L85 PathProgramCache]: Analyzing trace with hash -912047096, now seen corresponding path program 1 times [2022-11-20 10:50:00,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:00,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817752202] [2022-11-20 10:50:00,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:00,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:00,280 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 10:50:00,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:00,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817752202] [2022-11-20 10:50:00,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817752202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:00,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:00,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:50:00,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332959786] [2022-11-20 10:50:00,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:00,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:00,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:00,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:00,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:50:00,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 179 [2022-11-20 10:50:00,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 282 transitions, 1538 flow. Second operand has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:00,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:00,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 179 [2022-11-20 10:50:00,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:02,608 INFO L130 PetriNetUnfolder]: 2166/8670 cut-off events. [2022-11-20 10:50:02,608 INFO L131 PetriNetUnfolder]: For 21338/21952 co-relation queries the response was YES. [2022-11-20 10:50:02,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21345 conditions, 8670 events. 2166/8670 cut-off events. For 21338/21952 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 96882 event pairs, 502 based on Foata normal form. 140/7823 useless extension candidates. Maximal degree in co-relation 21081. Up to 1395 conditions per place. [2022-11-20 10:50:02,748 INFO L137 encePairwiseOnDemand]: 166/179 looper letters, 173 selfloop transitions, 81 changer transitions 0/402 dead transitions. [2022-11-20 10:50:02,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 402 transitions, 2791 flow [2022-11-20 10:50:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:50:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 10:50:02,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1401 transitions. [2022-11-20 10:50:02,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7115286947689182 [2022-11-20 10:50:02,756 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1401 transitions. [2022-11-20 10:50:02,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1401 transitions. [2022-11-20 10:50:02,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:02,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1401 transitions. [2022-11-20 10:50:02,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 127.36363636363636) internal successors, (1401), 11 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:02,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 179.0) internal successors, (2148), 12 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:02,768 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 179.0) internal successors, (2148), 12 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:02,768 INFO L175 Difference]: Start difference. First operand has 251 places, 282 transitions, 1538 flow. Second operand 11 states and 1401 transitions. [2022-11-20 10:50:02,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 402 transitions, 2791 flow [2022-11-20 10:50:02,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 402 transitions, 2716 flow, removed 36 selfloop flow, removed 2 redundant places. [2022-11-20 10:50:02,898 INFO L231 Difference]: Finished difference. Result has 266 places, 319 transitions, 2091 flow [2022-11-20 10:50:02,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2091, PETRI_PLACES=266, PETRI_TRANSITIONS=319} [2022-11-20 10:50:02,902 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 101 predicate places. [2022-11-20 10:50:02,902 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 319 transitions, 2091 flow [2022-11-20 10:50:02,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:02,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:02,903 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:02,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:50:02,904 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:50:02,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:02,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2123618126, now seen corresponding path program 1 times [2022-11-20 10:50:02,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:02,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550744504] [2022-11-20 10:50:02,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:02,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:50:03,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:03,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550744504] [2022-11-20 10:50:03,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550744504] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:03,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265519829] [2022-11-20 10:50:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:03,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:03,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:03,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:03,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:50:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:03,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 10:50:03,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:03,834 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:50:03,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 10:50:03,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:50:04,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 10:50:04,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 10:50:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:50:04,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:50:04,258 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_106 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_106) |c_~#global~0.base|) |c_~#global~0.offset|) 2147483647)) is different from false [2022-11-20 10:50:04,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-20 10:50:04,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 10:50:04,531 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 10:50:04,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-20 10:50:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2022-11-20 10:50:04,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265519829] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:50:04,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:50:04,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2022-11-20 10:50:04,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247300187] [2022-11-20 10:50:04,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:50:04,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 10:50:04,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:04,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 10:50:04,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=603, Unknown=1, NotChecked=50, Total=756 [2022-11-20 10:50:04,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 179 [2022-11-20 10:50:04,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 319 transitions, 2091 flow. Second operand has 28 states, 28 states have (on average 99.46428571428571) internal successors, (2785), 28 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:04,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:04,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 179 [2022-11-20 10:50:04,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:13,046 INFO L130 PetriNetUnfolder]: 9764/27522 cut-off events. [2022-11-20 10:50:13,046 INFO L131 PetriNetUnfolder]: For 120577/121620 co-relation queries the response was YES. [2022-11-20 10:50:13,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82004 conditions, 27522 events. 9764/27522 cut-off events. For 120577/121620 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 333787 event pairs, 1381 based on Foata normal form. 351/26284 useless extension candidates. Maximal degree in co-relation 81453. Up to 5942 conditions per place. [2022-11-20 10:50:13,477 INFO L137 encePairwiseOnDemand]: 159/179 looper letters, 483 selfloop transitions, 260 changer transitions 0/882 dead transitions. [2022-11-20 10:50:13,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 882 transitions, 8012 flow [2022-11-20 10:50:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 10:50:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-20 10:50:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3778 transitions. [2022-11-20 10:50:13,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6030327214684756 [2022-11-20 10:50:13,487 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3778 transitions. [2022-11-20 10:50:13,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3778 transitions. [2022-11-20 10:50:13,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:13,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3778 transitions. [2022-11-20 10:50:13,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 107.94285714285714) internal successors, (3778), 35 states have internal predecessors, (3778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:13,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 179.0) internal successors, (6444), 36 states have internal predecessors, (6444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:13,534 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 179.0) internal successors, (6444), 36 states have internal predecessors, (6444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:13,534 INFO L175 Difference]: Start difference. First operand has 266 places, 319 transitions, 2091 flow. Second operand 35 states and 3778 transitions. [2022-11-20 10:50:13,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 882 transitions, 8012 flow [2022-11-20 10:50:15,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 882 transitions, 7758 flow, removed 117 selfloop flow, removed 2 redundant places. [2022-11-20 10:50:15,302 INFO L231 Difference]: Finished difference. Result has 317 places, 528 transitions, 4974 flow [2022-11-20 10:50:15,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4974, PETRI_PLACES=317, PETRI_TRANSITIONS=528} [2022-11-20 10:50:15,304 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 152 predicate places. [2022-11-20 10:50:15,304 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 528 transitions, 4974 flow [2022-11-20 10:50:15,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 99.46428571428571) internal successors, (2785), 28 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:15,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:15,305 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:15,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:50:15,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:15,512 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:50:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:15,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1791311658, now seen corresponding path program 1 times [2022-11-20 10:50:15,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:15,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122335515] [2022-11-20 10:50:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:15,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:16,058 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 10:50:16,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:16,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122335515] [2022-11-20 10:50:16,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122335515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:16,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:16,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-20 10:50:16,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789901454] [2022-11-20 10:50:16,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:16,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 10:50:16,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:16,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 10:50:16,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:50:16,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 179 [2022-11-20 10:50:16,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 528 transitions, 4974 flow. Second operand has 15 states, 15 states have (on average 92.06666666666666) internal successors, (1381), 15 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:16,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:16,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 179 [2022-11-20 10:50:16,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:28,797 INFO L130 PetriNetUnfolder]: 17360/43736 cut-off events. [2022-11-20 10:50:28,797 INFO L131 PetriNetUnfolder]: For 279087/281156 co-relation queries the response was YES. [2022-11-20 10:50:29,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150946 conditions, 43736 events. 17360/43736 cut-off events. For 279087/281156 co-relation queries the response was YES. Maximal size of possible extension queue 1685. Compared 539903 event pairs, 3256 based on Foata normal form. 820/42725 useless extension candidates. Maximal degree in co-relation 150609. Up to 13580 conditions per place. [2022-11-20 10:50:29,601 INFO L137 encePairwiseOnDemand]: 156/179 looper letters, 648 selfloop transitions, 291 changer transitions 21/1073 dead transitions. [2022-11-20 10:50:29,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 1073 transitions, 11435 flow [2022-11-20 10:50:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 10:50:29,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-20 10:50:29,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 4051 transitions. [2022-11-20 10:50:29,614 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5802893568256696 [2022-11-20 10:50:29,614 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 4051 transitions. [2022-11-20 10:50:29,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 4051 transitions. [2022-11-20 10:50:29,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:29,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 4051 transitions. [2022-11-20 10:50:29,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 103.87179487179488) internal successors, (4051), 39 states have internal predecessors, (4051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:29,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 179.0) internal successors, (7160), 40 states have internal predecessors, (7160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:29,652 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 179.0) internal successors, (7160), 40 states have internal predecessors, (7160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:29,653 INFO L175 Difference]: Start difference. First operand has 317 places, 528 transitions, 4974 flow. Second operand 39 states and 4051 transitions. [2022-11-20 10:50:29,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 1073 transitions, 11435 flow [2022-11-20 10:50:34,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 1073 transitions, 10652 flow, removed 390 selfloop flow, removed 2 redundant places. [2022-11-20 10:50:34,750 INFO L231 Difference]: Finished difference. Result has 369 places, 610 transitions, 6522 flow [2022-11-20 10:50:34,751 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=4759, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=6522, PETRI_PLACES=369, PETRI_TRANSITIONS=610} [2022-11-20 10:50:34,751 INFO L288 CegarLoopForPetriNet]: 165 programPoint places, 204 predicate places. [2022-11-20 10:50:34,751 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 610 transitions, 6522 flow [2022-11-20 10:50:34,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.06666666666666) internal successors, (1381), 15 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:34,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:34,752 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:34,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:50:34,752 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:50:34,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:34,753 INFO L85 PathProgramCache]: Analyzing trace with hash -547560929, now seen corresponding path program 1 times [2022-11-20 10:50:34,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:34,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250943000] [2022-11-20 10:50:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:34,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:34,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:50:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:50:34,791 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:50:34,791 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:50:34,791 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-20 10:50:34,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-20 10:50:34,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-20 10:50:34,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-20 10:50:34,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-20 10:50:34,792 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-20 10:50:34,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-20 10:50:34,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-20 10:50:34,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-20 10:50:34,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-20 10:50:34,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-20 10:50:34,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-20 10:50:34,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-20 10:50:34,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-20 10:50:34,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-20 10:50:34,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-20 10:50:34,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-20 10:50:34,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:50:34,795 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:34,796 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:50:34,796 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 10:50:34,820 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:50:34,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 222 transitions, 474 flow [2022-11-20 10:50:34,890 INFO L130 PetriNetUnfolder]: 50/448 cut-off events. [2022-11-20 10:50:34,891 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 10:50:34,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 448 events. 50/448 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1594 event pairs, 1 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2022-11-20 10:50:34,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 222 transitions, 474 flow [2022-11-20 10:50:34,900 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 222 transitions, 474 flow [2022-11-20 10:50:34,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:50:34,901 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;@307fc127, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:50:34,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-20 10:50:34,906 INFO L130 PetriNetUnfolder]: 2/66 cut-off events. [2022-11-20 10:50:34,906 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:50:34,907 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:34,907 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:34,907 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:50:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:34,908 INFO L85 PathProgramCache]: Analyzing trace with hash 371453263, now seen corresponding path program 1 times [2022-11-20 10:50:34,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:34,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067164374] [2022-11-20 10:50:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:34,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:34,969 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 10:50:34,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:34,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067164374] [2022-11-20 10:50:34,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067164374] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:34,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:34,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:50:34,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760762256] [2022-11-20 10:50:34,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:34,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:34,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:34,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:34,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:34,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 222 [2022-11-20 10:50:34,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 222 transitions, 474 flow. Second operand has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:34,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:34,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 222 [2022-11-20 10:50:34,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:35,084 INFO L130 PetriNetUnfolder]: 7/382 cut-off events. [2022-11-20 10:50:35,084 INFO L131 PetriNetUnfolder]: For 103/272 co-relation queries the response was YES. [2022-11-20 10:50:35,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 382 events. 7/382 cut-off events. For 103/272 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1205 event pairs, 1 based on Foata normal form. 280/618 useless extension candidates. Maximal degree in co-relation 276. Up to 40 conditions per place. [2022-11-20 10:50:35,088 INFO L137 encePairwiseOnDemand]: 192/222 looper letters, 21 selfloop transitions, 4 changer transitions 0/205 dead transitions. [2022-11-20 10:50:35,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 205 transitions, 490 flow [2022-11-20 10:50:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:50:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:50:35,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 970 transitions. [2022-11-20 10:50:35,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8738738738738738 [2022-11-20 10:50:35,091 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 970 transitions. [2022-11-20 10:50:35,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 970 transitions. [2022-11-20 10:50:35,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:35,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 970 transitions. [2022-11-20 10:50:35,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.0) internal successors, (970), 5 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:35,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:35,097 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:35,097 INFO L175 Difference]: Start difference. First operand has 203 places, 222 transitions, 474 flow. Second operand 5 states and 970 transitions. [2022-11-20 10:50:35,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 205 transitions, 490 flow [2022-11-20 10:50:35,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 205 transitions, 490 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:50:35,101 INFO L231 Difference]: Finished difference. Result has 209 places, 201 transitions, 458 flow [2022-11-20 10:50:35,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=458, PETRI_PLACES=209, PETRI_TRANSITIONS=201} [2022-11-20 10:50:35,103 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, 6 predicate places. [2022-11-20 10:50:35,104 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 201 transitions, 458 flow [2022-11-20 10:50:35,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:35,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:35,104 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:35,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:50:35,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:50:35,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:35,105 INFO L85 PathProgramCache]: Analyzing trace with hash 543979648, now seen corresponding path program 1 times [2022-11-20 10:50:35,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:35,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999329708] [2022-11-20 10:50:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:35,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:35,478 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 10:50:35,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:35,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999329708] [2022-11-20 10:50:35,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999329708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:35,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:35,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 10:50:35,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987622961] [2022-11-20 10:50:35,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:35,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 10:50:35,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:35,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 10:50:35,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-20 10:50:35,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 222 [2022-11-20 10:50:35,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 201 transitions, 458 flow. Second operand has 12 states, 12 states have (on average 125.0) internal successors, (1500), 12 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:35,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:35,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 222 [2022-11-20 10:50:35,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:55,823 INFO L130 PetriNetUnfolder]: 68086/152238 cut-off events. [2022-11-20 10:50:55,823 INFO L131 PetriNetUnfolder]: For 3726/3726 co-relation queries the response was YES. [2022-11-20 10:50:56,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250479 conditions, 152238 events. 68086/152238 cut-off events. For 3726/3726 co-relation queries the response was YES. Maximal size of possible extension queue 4123. Compared 1967631 event pairs, 19792 based on Foata normal form. 0/141033 useless extension candidates. Maximal degree in co-relation 250380. Up to 50408 conditions per place. [2022-11-20 10:50:57,235 INFO L137 encePairwiseOnDemand]: 204/222 looper letters, 392 selfloop transitions, 62 changer transitions 0/579 dead transitions. [2022-11-20 10:50:57,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 579 transitions, 2243 flow [2022-11-20 10:50:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 10:50:57,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 10:50:57,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3272 transitions. [2022-11-20 10:50:57,243 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6408147277712495 [2022-11-20 10:50:57,243 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3272 transitions. [2022-11-20 10:50:57,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3272 transitions. [2022-11-20 10:50:57,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:57,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3272 transitions. [2022-11-20 10:50:57,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 142.2608695652174) internal successors, (3272), 23 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:57,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 222.0) internal successors, (5328), 24 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:57,261 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 222.0) internal successors, (5328), 24 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:57,261 INFO L175 Difference]: Start difference. First operand has 209 places, 201 transitions, 458 flow. Second operand 23 states and 3272 transitions. [2022-11-20 10:50:57,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 579 transitions, 2243 flow [2022-11-20 10:50:57,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 579 transitions, 2241 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:50:57,285 INFO L231 Difference]: Finished difference. Result has 246 places, 278 transitions, 954 flow [2022-11-20 10:50:57,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=954, PETRI_PLACES=246, PETRI_TRANSITIONS=278} [2022-11-20 10:50:57,286 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, 43 predicate places. [2022-11-20 10:50:57,286 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 278 transitions, 954 flow [2022-11-20 10:50:57,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 125.0) internal successors, (1500), 12 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:57,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:57,287 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:57,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:50:57,287 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:50:57,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:57,288 INFO L85 PathProgramCache]: Analyzing trace with hash -666991151, now seen corresponding path program 1 times [2022-11-20 10:50:57,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:57,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893598037] [2022-11-20 10:50:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:57,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:57,334 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 10:50:57,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:57,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893598037] [2022-11-20 10:50:57,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893598037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:57,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:50:57,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:50:57,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743851789] [2022-11-20 10:50:57,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:57,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:50:57,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:57,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:50:57,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:50:57,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 222 [2022-11-20 10:50:57,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 278 transitions, 954 flow. Second operand has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:57,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:57,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 222 [2022-11-20 10:50:57,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:50:58,125 INFO L130 PetriNetUnfolder]: 419/3980 cut-off events. [2022-11-20 10:50:58,125 INFO L131 PetriNetUnfolder]: For 4176/4880 co-relation queries the response was YES. [2022-11-20 10:50:58,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 3980 events. 419/3980 cut-off events. For 4176/4880 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 40549 event pairs, 81 based on Foata normal form. 173/3769 useless extension candidates. Maximal degree in co-relation 6343. Up to 246 conditions per place. [2022-11-20 10:50:58,210 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 16 selfloop transitions, 8 changer transitions 0/278 dead transitions. [2022-11-20 10:50:58,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 278 transitions, 1000 flow [2022-11-20 10:50:58,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:50:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:50:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 919 transitions. [2022-11-20 10:50:58,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8279279279279279 [2022-11-20 10:50:58,212 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 919 transitions. [2022-11-20 10:50:58,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 919 transitions. [2022-11-20 10:50:58,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:50:58,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 919 transitions. [2022-11-20 10:50:58,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:58,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:58,218 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:58,218 INFO L175 Difference]: Start difference. First operand has 246 places, 278 transitions, 954 flow. Second operand 5 states and 919 transitions. [2022-11-20 10:50:58,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 278 transitions, 1000 flow [2022-11-20 10:50:58,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 278 transitions, 997 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 10:50:58,242 INFO L231 Difference]: Finished difference. Result has 248 places, 278 transitions, 971 flow [2022-11-20 10:50:58,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=971, PETRI_PLACES=248, PETRI_TRANSITIONS=278} [2022-11-20 10:50:58,244 INFO L288 CegarLoopForPetriNet]: 203 programPoint places, 45 predicate places. [2022-11-20 10:50:58,244 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 278 transitions, 971 flow [2022-11-20 10:50:58,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.75) internal successors, (735), 4 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:58,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:50:58,245 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:50:58,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:50:58,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:50:58,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:50:58,246 INFO L85 PathProgramCache]: Analyzing trace with hash 798111482, now seen corresponding path program 1 times [2022-11-20 10:50:58,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:50:58,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006002258] [2022-11-20 10:50:58,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:58,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:50:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:58,323 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 10:50:58,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:50:58,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006002258] [2022-11-20 10:50:58,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006002258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:50:58,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228065017] [2022-11-20 10:50:58,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:50:58,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:50:58,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:50:58,327 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:50:58,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1637ead0-c507-4e5a-97b3-f0d6db99905e/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:50:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:50:58,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:50:58,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:50:58,486 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 10:50:58,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:50:58,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228065017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:50:58,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:50:58,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:50:58,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832118728] [2022-11-20 10:50:58,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:50:58,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:50:58,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:50:58,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:50:58,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:50:58,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 222 [2022-11-20 10:50:58,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 278 transitions, 971 flow. Second operand has 6 states, 6 states have (on average 182.66666666666666) internal successors, (1096), 6 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:50:58,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:50:58,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 222 [2022-11-20 10:50:58,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand