./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 --- 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-2329fc7 [2022-12-13 19:46:31,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:46:31,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:46:31,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:46:31,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:46:31,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:46:31,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:46:31,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:46:31,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:46:31,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:46:31,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:46:31,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:46:31,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:46:31,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:46:31,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:46:31,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:46:31,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:46:31,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:46:31,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:46:31,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:46:31,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:46:31,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:46:31,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:46:31,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:46:31,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:46:31,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:46:31,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:46:31,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:46:31,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:46:31,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:46:31,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:46:31,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:46:31,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:46:31,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:46:31,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:46:31,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:46:31,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:46:31,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:46:31,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:46:31,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:46:31,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:46:31,600 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:46:31,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:46:31,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:46:31,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:46:31,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:46:31,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:46:31,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:46:31,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:46:31,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:46:31,621 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:46:31,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:46:31,626 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:46:31,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:46:31,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:46:31,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:46:31,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:46:31,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:46:31,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:46:31,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:46:31,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:46:31,628 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:46:31,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:46:31,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:46:31,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:46:31,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:46:31,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:46:31,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:46:31,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:46:31,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:46:31,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:46:31,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:46:31,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:46:31,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:46:31,630 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:46:31,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:46:31,630 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:46:31,630 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 [2022-12-13 19:46:31,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:46:31,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:46:31,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:46:31,835 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:46:31,836 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:46:31,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2022-12-13 19:46:34,365 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:46:34,591 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:46:34,591 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2022-12-13 19:46:34,603 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/data/c24f8d6af/202949a1163d4d549b88256e7e29cf06/FLAGd29f331ec [2022-12-13 19:46:34,905 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/data/c24f8d6af/202949a1163d4d549b88256e7e29cf06 [2022-12-13 19:46:34,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:46:34,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:46:34,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:46:34,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:46:34,912 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:46:34,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:46:34" (1/1) ... [2022-12-13 19:46:34,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@192a3d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:34, skipping insertion in model container [2022-12-13 19:46:34,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:46:34" (1/1) ... [2022-12-13 19:46:34,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:46:34,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:46:35,049 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:46:35,386 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_97ad0e16-bad0-48c3-ae33-fa89d0602c78/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-12-13 19:46:35,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:46:35,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:46:35,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:46:35,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:46:35,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:46:35,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:46:35,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:46:35,430 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:46:35,440 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 19:46:35,470 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_97ad0e16-bad0-48c3-ae33-fa89d0602c78/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-12-13 19:46:35,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:46:35,471 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:46:35,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:46:35,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:46:35,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 19:46:35,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 19:46:35,479 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:46:35,544 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:46:35,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:35 WrapperNode [2022-12-13 19:46:35,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:46:35,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:46:35,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:46:35,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:46:35,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:35" (1/1) ... [2022-12-13 19:46:35,567 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:35" (1/1) ... [2022-12-13 19:46:35,586 INFO L138 Inliner]: procedures = 468, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-12-13 19:46:35,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:46:35,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:46:35,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:46:35,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:46:35,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:35" (1/1) ... [2022-12-13 19:46:35,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:35" (1/1) ... [2022-12-13 19:46:35,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:35" (1/1) ... [2022-12-13 19:46:35,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:35" (1/1) ... [2022-12-13 19:46:35,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:35" (1/1) ... [2022-12-13 19:46:35,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:35" (1/1) ... [2022-12-13 19:46:35,609 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:35" (1/1) ... [2022-12-13 19:46:35,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:35" (1/1) ... [2022-12-13 19:46:35,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:46:35,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:46:35,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:46:35,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:46:35,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:35" (1/1) ... [2022-12-13 19:46:35,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:46:35,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:46:35,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:46:35,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:46:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 19:46:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:46:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 19:46:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:46:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:46:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 19:46:35,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:46:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:46:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-12-13 19:46:35,682 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-12-13 19:46:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:46:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:46:35,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:46:35,683 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:46:35,888 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:46:35,890 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:46:36,087 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:46:36,106 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:46:36,106 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:46:36,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:46:36 BoogieIcfgContainer [2022-12-13 19:46:36,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:46:36,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:46:36,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:46:36,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:46:36,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:46:34" (1/3) ... [2022-12-13 19:46:36,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6facff80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:46:36, skipping insertion in model container [2022-12-13 19:46:36,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:46:35" (2/3) ... [2022-12-13 19:46:36,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6facff80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:46:36, skipping insertion in model container [2022-12-13 19:46:36,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:46:36" (3/3) ... [2022-12-13 19:46:36,116 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2022-12-13 19:46:36,124 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:46:36,132 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:46:36,132 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 19:46:36,132 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:46:36,183 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 19:46:36,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 186 transitions, 388 flow [2022-12-13 19:46:36,275 INFO L130 PetriNetUnfolder]: 10/231 cut-off events. [2022-12-13 19:46:36,275 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 19:46:36,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 231 events. 10/231 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 334 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 137. Up to 4 conditions per place. [2022-12-13 19:46:36,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 186 transitions, 388 flow [2022-12-13 19:46:36,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 172 transitions, 356 flow [2022-12-13 19:46:36,285 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:46:36,292 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 172 transitions, 356 flow [2022-12-13 19:46:36,294 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 172 transitions, 356 flow [2022-12-13 19:46:36,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 172 transitions, 356 flow [2022-12-13 19:46:36,320 INFO L130 PetriNetUnfolder]: 7/208 cut-off events. [2022-12-13 19:46:36,320 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 19:46:36,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 7/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 281 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 125. Up to 4 conditions per place. [2022-12-13 19:46:36,321 INFO L119 LiptonReduction]: Number of co-enabled transitions 1764 [2022-12-13 19:46:47,532 INFO L134 LiptonReduction]: Checked pairs total: 3321 [2022-12-13 19:46:47,532 INFO L136 LiptonReduction]: Total number of compositions: 193 [2022-12-13 19:46:47,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:46:47,547 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;@9143323, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:46:47,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-13 19:46:47,548 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 19:46:47,548 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:46:47,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:46:47,548 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 19:46:47,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 19:46:47,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:47,552 INFO L85 PathProgramCache]: Analyzing trace with hash 649, now seen corresponding path program 1 times [2022-12-13 19:46:47,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:47,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488937658] [2022-12-13 19:46:47,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:47,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:47,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:47,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488937658] [2022-12-13 19:46:47,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488937658] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:47,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:46:47,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 19:46:47,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746563243] [2022-12-13 19:46:47,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:47,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 19:46:47,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:47,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 19:46:47,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:46:47,714 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 379 [2022-12-13 19:46:47,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 68 flow. Second operand has 2 states, 2 states have (on average 168.5) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:47,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:46:47,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 379 [2022-12-13 19:46:47,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:46:47,817 INFO L130 PetriNetUnfolder]: 169/316 cut-off events. [2022-12-13 19:46:47,817 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 19:46:47,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 316 events. 169/316 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1218 event pairs, 168 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 568. Up to 312 conditions per place. [2022-12-13 19:46:47,820 INFO L137 encePairwiseOnDemand]: 376/379 looper letters, 24 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2022-12-13 19:46:47,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 110 flow [2022-12-13 19:46:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 19:46:47,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 19:46:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 363 transitions. [2022-12-13 19:46:47,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4788918205804749 [2022-12-13 19:46:47,832 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 363 transitions. [2022-12-13 19:46:47,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 363 transitions. [2022-12-13 19:46:47,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:46:47,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 363 transitions. [2022-12-13 19:46:47,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 181.5) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:47,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:47,842 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:47,843 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 68 flow. Second operand 2 states and 363 transitions. [2022-12-13 19:46:47,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 110 flow [2022-12-13 19:46:47,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 102 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 19:46:47,847 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 54 flow [2022-12-13 19:46:47,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2022-12-13 19:46:47,851 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2022-12-13 19:46:47,851 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 54 flow [2022-12-13 19:46:47,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 168.5) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:47,852 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:46:47,852 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:46:47,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:46:47,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 19:46:47,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:47,852 INFO L85 PathProgramCache]: Analyzing trace with hash 20018383, now seen corresponding path program 1 times [2022-12-13 19:46:47,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:47,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906254606] [2022-12-13 19:46:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:47,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:48,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:48,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906254606] [2022-12-13 19:46:48,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906254606] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:48,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:46:48,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:46:48,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254440592] [2022-12-13 19:46:48,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:48,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:46:48,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:48,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:46:48,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:46:48,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 379 [2022-12-13 19:46:48,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:46:48,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 379 [2022-12-13 19:46:48,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:46:48,335 INFO L130 PetriNetUnfolder]: 218/420 cut-off events. [2022-12-13 19:46:48,335 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 19:46:48,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 420 events. 218/420 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1876 event pairs, 113 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 828. Up to 328 conditions per place. [2022-12-13 19:46:48,337 INFO L137 encePairwiseOnDemand]: 372/379 looper letters, 26 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2022-12-13 19:46:48,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 33 transitions, 134 flow [2022-12-13 19:46:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:46:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:46:48,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2022-12-13 19:46:48,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43535620052770446 [2022-12-13 19:46:48,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2022-12-13 19:46:48,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2022-12-13 19:46:48,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:46:48,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2022-12-13 19:46:48,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,344 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 54 flow. Second operand 3 states and 495 transitions. [2022-12-13 19:46:48,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 33 transitions, 134 flow [2022-12-13 19:46:48,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:46:48,345 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 90 flow [2022-12-13 19:46:48,345 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2022-12-13 19:46:48,345 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2022-12-13 19:46:48,345 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 90 flow [2022-12-13 19:46:48,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,346 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:46:48,346 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:46:48,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:46:48,346 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 19:46:48,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:48,347 INFO L85 PathProgramCache]: Analyzing trace with hash 620569097, now seen corresponding path program 1 times [2022-12-13 19:46:48,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:48,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447615332] [2022-12-13 19:46:48,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:48,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:48,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:48,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:48,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447615332] [2022-12-13 19:46:48,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447615332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:48,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:46:48,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:46:48,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464406744] [2022-12-13 19:46:48,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:48,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:46:48,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:48,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:46:48,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:46:48,547 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 379 [2022-12-13 19:46:48,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:46:48,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 379 [2022-12-13 19:46:48,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:46:48,693 INFO L130 PetriNetUnfolder]: 291/536 cut-off events. [2022-12-13 19:46:48,693 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2022-12-13 19:46:48,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 536 events. 291/536 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2422 event pairs, 133 based on Foata normal form. 32/566 useless extension candidates. Maximal degree in co-relation 1391. Up to 417 conditions per place. [2022-12-13 19:46:48,695 INFO L137 encePairwiseOnDemand]: 372/379 looper letters, 30 selfloop transitions, 9 changer transitions 2/41 dead transitions. [2022-12-13 19:46:48,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 218 flow [2022-12-13 19:46:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:46:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:46:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2022-12-13 19:46:48,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.436235708003518 [2022-12-13 19:46:48,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2022-12-13 19:46:48,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2022-12-13 19:46:48,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:46:48,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2022-12-13 19:46:48,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,700 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 90 flow. Second operand 3 states and 496 transitions. [2022-12-13 19:46:48,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 218 flow [2022-12-13 19:46:48,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 41 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:46:48,702 INFO L231 Difference]: Finished difference. Result has 32 places, 35 transitions, 155 flow [2022-12-13 19:46:48,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=32, PETRI_TRANSITIONS=35} [2022-12-13 19:46:48,703 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2022-12-13 19:46:48,703 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 35 transitions, 155 flow [2022-12-13 19:46:48,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:46:48,703 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:46:48,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:46:48,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 19:46:48,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:48,704 INFO L85 PathProgramCache]: Analyzing trace with hash 235992917, now seen corresponding path program 1 times [2022-12-13 19:46:48,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:48,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100701716] [2022-12-13 19:46:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:48,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:48,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:48,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100701716] [2022-12-13 19:46:48,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100701716] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:48,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:46:48,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:46:48,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284177460] [2022-12-13 19:46:48,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:48,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:46:48,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:48,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:46:48,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:46:48,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 379 [2022-12-13 19:46:48,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 35 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:46:48,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 379 [2022-12-13 19:46:48,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:46:48,841 INFO L130 PetriNetUnfolder]: 72/144 cut-off events. [2022-12-13 19:46:48,841 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2022-12-13 19:46:48,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 144 events. 72/144 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 408 event pairs, 15 based on Foata normal form. 16/159 useless extension candidates. Maximal degree in co-relation 409. Up to 104 conditions per place. [2022-12-13 19:46:48,843 INFO L137 encePairwiseOnDemand]: 377/379 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2022-12-13 19:46:48,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 132 flow [2022-12-13 19:46:48,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:46:48,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:46:48,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2022-12-13 19:46:48,844 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4520668425681618 [2022-12-13 19:46:48,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2022-12-13 19:46:48,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2022-12-13 19:46:48,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:46:48,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2022-12-13 19:46:48,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,847 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 379.0) internal successors, (1516), 4 states have internal predecessors, (1516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,847 INFO L175 Difference]: Start difference. First operand has 32 places, 35 transitions, 155 flow. Second operand 3 states and 514 transitions. [2022-12-13 19:46:48,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 132 flow [2022-12-13 19:46:48,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 24 transitions, 116 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-12-13 19:46:48,848 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 50 flow [2022-12-13 19:46:48,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2022-12-13 19:46:48,849 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, -6 predicate places. [2022-12-13 19:46:48,849 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 50 flow [2022-12-13 19:46:48,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:48,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:46:48,849 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:46:48,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:46:48,849 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 19:46:48,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:48,850 INFO L85 PathProgramCache]: Analyzing trace with hash -945830654, now seen corresponding path program 1 times [2022-12-13 19:46:48,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:48,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940109539] [2022-12-13 19:46:48,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:48,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:49,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:49,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940109539] [2022-12-13 19:46:49,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940109539] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:49,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:46:49,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:46:49,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087318912] [2022-12-13 19:46:49,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:49,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:46:49,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:49,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:46:49,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:46:49,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 379 [2022-12-13 19:46:49,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 50 flow. Second operand has 8 states, 8 states have (on average 147.125) internal successors, (1177), 8 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:49,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:46:49,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 379 [2022-12-13 19:46:49,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:46:50,236 INFO L130 PetriNetUnfolder]: 107/228 cut-off events. [2022-12-13 19:46:50,236 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2022-12-13 19:46:50,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 228 events. 107/228 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 813 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 577. Up to 95 conditions per place. [2022-12-13 19:46:50,237 INFO L137 encePairwiseOnDemand]: 371/379 looper letters, 47 selfloop transitions, 19 changer transitions 0/66 dead transitions. [2022-12-13 19:46:50,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 66 transitions, 320 flow [2022-12-13 19:46:50,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:46:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 19:46:50,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1517 transitions. [2022-12-13 19:46:50,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4002638522427441 [2022-12-13 19:46:50,240 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1517 transitions. [2022-12-13 19:46:50,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1517 transitions. [2022-12-13 19:46:50,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:46:50,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1517 transitions. [2022-12-13 19:46:50,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 151.7) internal successors, (1517), 10 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:50,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:50,248 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:50,248 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 50 flow. Second operand 10 states and 1517 transitions. [2022-12-13 19:46:50,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 66 transitions, 320 flow [2022-12-13 19:46:50,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 66 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:46:50,249 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 150 flow [2022-12-13 19:46:50,249 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=150, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2022-12-13 19:46:50,250 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2022-12-13 19:46:50,250 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 150 flow [2022-12-13 19:46:50,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 147.125) internal successors, (1177), 8 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:50,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:46:50,251 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:46:50,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:46:50,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 19:46:50,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:50,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2015048006, now seen corresponding path program 2 times [2022-12-13 19:46:50,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:50,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580094705] [2022-12-13 19:46:50,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:50,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:50,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:50,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580094705] [2022-12-13 19:46:50,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580094705] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:50,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:46:50,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:46:50,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378167638] [2022-12-13 19:46:50,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:50,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:46:50,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:50,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:46:50,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:46:50,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 379 [2022-12-13 19:46:50,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:50,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:46:50,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 379 [2022-12-13 19:46:50,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:46:51,135 INFO L130 PetriNetUnfolder]: 126/285 cut-off events. [2022-12-13 19:46:51,135 INFO L131 PetriNetUnfolder]: For 231/231 co-relation queries the response was YES. [2022-12-13 19:46:51,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 285 events. 126/285 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1159 event pairs, 50 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 843. Up to 113 conditions per place. [2022-12-13 19:46:51,136 INFO L137 encePairwiseOnDemand]: 371/379 looper letters, 35 selfloop transitions, 22 changer transitions 0/57 dead transitions. [2022-12-13 19:46:51,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 366 flow [2022-12-13 19:46:51,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:46:51,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:46:51,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 934 transitions. [2022-12-13 19:46:51,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41072999120492526 [2022-12-13 19:46:51,138 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 934 transitions. [2022-12-13 19:46:51,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 934 transitions. [2022-12-13 19:46:51,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:46:51,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 934 transitions. [2022-12-13 19:46:51,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 155.66666666666666) internal successors, (934), 6 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:51,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 379.0) internal successors, (2653), 7 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:51,142 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 379.0) internal successors, (2653), 7 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:51,142 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 150 flow. Second operand 6 states and 934 transitions. [2022-12-13 19:46:51,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 366 flow [2022-12-13 19:46:51,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 353 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 19:46:51,144 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 278 flow [2022-12-13 19:46:51,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2022-12-13 19:46:51,145 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2022-12-13 19:46:51,145 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 278 flow [2022-12-13 19:46:51,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:51,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:46:51,145 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:46:51,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:46:51,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 19:46:51,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash -237414968, now seen corresponding path program 1 times [2022-12-13 19:46:51,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:51,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424916810] [2022-12-13 19:46:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:51,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:52,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:52,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424916810] [2022-12-13 19:46:52,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424916810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:52,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:46:52,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:46:52,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752704250] [2022-12-13 19:46:52,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:52,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:46:52,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:52,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:46:52,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:46:52,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 379 [2022-12-13 19:46:52,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 278 flow. Second operand has 11 states, 11 states have (on average 142.54545454545453) internal successors, (1568), 11 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:52,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:46:52,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 379 [2022-12-13 19:46:52,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:46:53,329 INFO L130 PetriNetUnfolder]: 165/390 cut-off events. [2022-12-13 19:46:53,329 INFO L131 PetriNetUnfolder]: For 794/794 co-relation queries the response was YES. [2022-12-13 19:46:53,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 390 events. 165/390 cut-off events. For 794/794 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1924 event pairs, 17 based on Foata normal form. 3/392 useless extension candidates. Maximal degree in co-relation 1355. Up to 160 conditions per place. [2022-12-13 19:46:53,330 INFO L137 encePairwiseOnDemand]: 368/379 looper letters, 73 selfloop transitions, 21 changer transitions 19/113 dead transitions. [2022-12-13 19:46:53,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 113 transitions, 924 flow [2022-12-13 19:46:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:46:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 19:46:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1479 transitions. [2022-12-13 19:46:53,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3902374670184697 [2022-12-13 19:46:53,333 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1479 transitions. [2022-12-13 19:46:53,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1479 transitions. [2022-12-13 19:46:53,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:46:53,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1479 transitions. [2022-12-13 19:46:53,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 147.9) internal successors, (1479), 10 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:53,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:53,339 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:53,339 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 278 flow. Second operand 10 states and 1479 transitions. [2022-12-13 19:46:53,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 113 transitions, 924 flow [2022-12-13 19:46:53,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 113 transitions, 911 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 19:46:53,342 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 482 flow [2022-12-13 19:46:53,343 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=482, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2022-12-13 19:46:53,343 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2022-12-13 19:46:53,343 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 482 flow [2022-12-13 19:46:53,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 142.54545454545453) internal successors, (1568), 11 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:53,344 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:46:53,344 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:46:53,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:46:53,344 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 19:46:53,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:53,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1872745500, now seen corresponding path program 2 times [2022-12-13 19:46:53,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:53,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559764940] [2022-12-13 19:46:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:53,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:54,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:54,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:54,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559764940] [2022-12-13 19:46:54,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559764940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:54,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:46:54,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:46:54,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283132966] [2022-12-13 19:46:54,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:54,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:46:54,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:54,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:46:54,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:46:54,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 379 [2022-12-13 19:46:54,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 482 flow. Second operand has 11 states, 11 states have (on average 142.54545454545453) internal successors, (1568), 11 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:54,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:46:54,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 379 [2022-12-13 19:46:54,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:46:55,715 INFO L130 PetriNetUnfolder]: 187/440 cut-off events. [2022-12-13 19:46:55,715 INFO L131 PetriNetUnfolder]: For 1536/1536 co-relation queries the response was YES. [2022-12-13 19:46:55,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 440 events. 187/440 cut-off events. For 1536/1536 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2227 event pairs, 38 based on Foata normal form. 3/442 useless extension candidates. Maximal degree in co-relation 1954. Up to 246 conditions per place. [2022-12-13 19:46:55,717 INFO L137 encePairwiseOnDemand]: 370/379 looper letters, 64 selfloop transitions, 26 changer transitions 18/108 dead transitions. [2022-12-13 19:46:55,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 108 transitions, 1058 flow [2022-12-13 19:46:55,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:46:55,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 19:46:55,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1473 transitions. [2022-12-13 19:46:55,720 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3886543535620053 [2022-12-13 19:46:55,720 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1473 transitions. [2022-12-13 19:46:55,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1473 transitions. [2022-12-13 19:46:55,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:46:55,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1473 transitions. [2022-12-13 19:46:55,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 147.3) internal successors, (1473), 10 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:55,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:55,725 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:55,725 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 482 flow. Second operand 10 states and 1473 transitions. [2022-12-13 19:46:55,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 108 transitions, 1058 flow [2022-12-13 19:46:55,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 108 transitions, 1002 flow, removed 27 selfloop flow, removed 3 redundant places. [2022-12-13 19:46:55,730 INFO L231 Difference]: Finished difference. Result has 67 places, 70 transitions, 673 flow [2022-12-13 19:46:55,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=673, PETRI_PLACES=67, PETRI_TRANSITIONS=70} [2022-12-13 19:46:55,731 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2022-12-13 19:46:55,731 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 70 transitions, 673 flow [2022-12-13 19:46:55,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 142.54545454545453) internal successors, (1568), 11 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:55,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:46:55,732 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:46:55,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:46:55,732 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 19:46:55,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:55,732 INFO L85 PathProgramCache]: Analyzing trace with hash 274276288, now seen corresponding path program 3 times [2022-12-13 19:46:55,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:55,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347780928] [2022-12-13 19:46:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:55,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:56,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:56,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347780928] [2022-12-13 19:46:56,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347780928] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:56,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:46:56,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:46:56,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532649889] [2022-12-13 19:46:56,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:56,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:46:56,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:56,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:46:56,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:46:57,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 379 [2022-12-13 19:46:57,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 70 transitions, 673 flow. Second operand has 11 states, 11 states have (on average 142.54545454545453) internal successors, (1568), 11 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:57,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:46:57,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 379 [2022-12-13 19:46:57,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:46:57,960 INFO L130 PetriNetUnfolder]: 186/444 cut-off events. [2022-12-13 19:46:57,960 INFO L131 PetriNetUnfolder]: For 2027/2027 co-relation queries the response was YES. [2022-12-13 19:46:57,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2180 conditions, 444 events. 186/444 cut-off events. For 2027/2027 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2287 event pairs, 22 based on Foata normal form. 3/446 useless extension candidates. Maximal degree in co-relation 2158. Up to 177 conditions per place. [2022-12-13 19:46:57,962 INFO L137 encePairwiseOnDemand]: 368/379 looper letters, 75 selfloop transitions, 35 changer transitions 18/128 dead transitions. [2022-12-13 19:46:57,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 128 transitions, 1326 flow [2022-12-13 19:46:57,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:46:57,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:46:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1770 transitions. [2022-12-13 19:46:57,966 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3891820580474934 [2022-12-13 19:46:57,966 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1770 transitions. [2022-12-13 19:46:57,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1770 transitions. [2022-12-13 19:46:57,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:46:57,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1770 transitions. [2022-12-13 19:46:57,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 147.5) internal successors, (1770), 12 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:57,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 379.0) internal successors, (4927), 13 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:57,977 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 379.0) internal successors, (4927), 13 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:57,978 INFO L175 Difference]: Start difference. First operand has 67 places, 70 transitions, 673 flow. Second operand 12 states and 1770 transitions. [2022-12-13 19:46:57,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 128 transitions, 1326 flow [2022-12-13 19:46:57,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 128 transitions, 1250 flow, removed 27 selfloop flow, removed 5 redundant places. [2022-12-13 19:46:57,987 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 811 flow [2022-12-13 19:46:57,988 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=811, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2022-12-13 19:46:57,988 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2022-12-13 19:46:57,988 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 811 flow [2022-12-13 19:46:57,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 142.54545454545453) internal successors, (1568), 11 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:57,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:46:57,989 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:46:57,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 19:46:57,990 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 19:46:57,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:57,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1864525696, now seen corresponding path program 4 times [2022-12-13 19:46:57,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:46:57,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049019626] [2022-12-13 19:46:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:57,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:46:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:58,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:46:58,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049019626] [2022-12-13 19:46:58,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049019626] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:46:58,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:46:58,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:46:58,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093090275] [2022-12-13 19:46:58,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:46:58,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:46:58,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:46:58,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:46:58,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:46:59,580 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 379 [2022-12-13 19:46:59,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 811 flow. Second operand has 11 states, 11 states have (on average 143.54545454545453) internal successors, (1579), 11 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:46:59,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:46:59,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 379 [2022-12-13 19:46:59,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:47:00,263 INFO L130 PetriNetUnfolder]: 174/450 cut-off events. [2022-12-13 19:47:00,263 INFO L131 PetriNetUnfolder]: For 2444/2444 co-relation queries the response was YES. [2022-12-13 19:47:00,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2330 conditions, 450 events. 174/450 cut-off events. For 2444/2444 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2459 event pairs, 11 based on Foata normal form. 2/450 useless extension candidates. Maximal degree in co-relation 2305. Up to 130 conditions per place. [2022-12-13 19:47:00,265 INFO L137 encePairwiseOnDemand]: 368/379 looper letters, 75 selfloop transitions, 45 changer transitions 14/134 dead transitions. [2022-12-13 19:47:00,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 134 transitions, 1458 flow [2022-12-13 19:47:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:47:00,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-13 19:47:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1641 transitions. [2022-12-13 19:47:00,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3936195730390981 [2022-12-13 19:47:00,268 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1641 transitions. [2022-12-13 19:47:00,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1641 transitions. [2022-12-13 19:47:00,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:47:00,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1641 transitions. [2022-12-13 19:47:00,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 149.1818181818182) internal successors, (1641), 11 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:00,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 379.0) internal successors, (4548), 12 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:00,278 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 379.0) internal successors, (4548), 12 states have internal predecessors, (4548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:00,278 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 811 flow. Second operand 11 states and 1641 transitions. [2022-12-13 19:47:00,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 134 transitions, 1458 flow [2022-12-13 19:47:00,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 134 transitions, 1374 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-12-13 19:47:00,289 INFO L231 Difference]: Finished difference. Result has 79 places, 86 transitions, 997 flow [2022-12-13 19:47:00,289 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=997, PETRI_PLACES=79, PETRI_TRANSITIONS=86} [2022-12-13 19:47:00,290 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 47 predicate places. [2022-12-13 19:47:00,290 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 86 transitions, 997 flow [2022-12-13 19:47:00,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 143.54545454545453) internal successors, (1579), 11 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:00,291 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:47:00,291 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:47:00,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:47:00,291 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 19:47:00,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:00,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2040630690, now seen corresponding path program 5 times [2022-12-13 19:47:00,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:00,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109831116] [2022-12-13 19:47:00,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:00,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:47:01,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:47:01,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109831116] [2022-12-13 19:47:01,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109831116] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:47:01,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:47:01,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 19:47:01,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013824019] [2022-12-13 19:47:01,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:47:01,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:47:01,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:47:01,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:47:01,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:47:01,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 379 [2022-12-13 19:47:01,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 86 transitions, 997 flow. Second operand has 11 states, 11 states have (on average 142.54545454545453) internal successors, (1568), 11 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:01,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:47:01,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 379 [2022-12-13 19:47:01,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:47:02,267 INFO L130 PetriNetUnfolder]: 224/608 cut-off events. [2022-12-13 19:47:02,267 INFO L131 PetriNetUnfolder]: For 4310/4310 co-relation queries the response was YES. [2022-12-13 19:47:02,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3345 conditions, 608 events. 224/608 cut-off events. For 4310/4310 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3781 event pairs, 42 based on Foata normal form. 1/605 useless extension candidates. Maximal degree in co-relation 3319. Up to 306 conditions per place. [2022-12-13 19:47:02,270 INFO L137 encePairwiseOnDemand]: 369/379 looper letters, 117 selfloop transitions, 66 changer transitions 7/190 dead transitions. [2022-12-13 19:47:02,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 190 transitions, 2478 flow [2022-12-13 19:47:02,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 19:47:02,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 19:47:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1772 transitions. [2022-12-13 19:47:02,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3896218117854002 [2022-12-13 19:47:02,273 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1772 transitions. [2022-12-13 19:47:02,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1772 transitions. [2022-12-13 19:47:02,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:47:02,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1772 transitions. [2022-12-13 19:47:02,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 147.66666666666666) internal successors, (1772), 12 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:02,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 379.0) internal successors, (4927), 13 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:02,278 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 379.0) internal successors, (4927), 13 states have internal predecessors, (4927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:02,278 INFO L175 Difference]: Start difference. First operand has 79 places, 86 transitions, 997 flow. Second operand 12 states and 1772 transitions. [2022-12-13 19:47:02,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 190 transitions, 2478 flow [2022-12-13 19:47:02,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 190 transitions, 2361 flow, removed 25 selfloop flow, removed 5 redundant places. [2022-12-13 19:47:02,298 INFO L231 Difference]: Finished difference. Result has 89 places, 130 transitions, 1773 flow [2022-12-13 19:47:02,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1773, PETRI_PLACES=89, PETRI_TRANSITIONS=130} [2022-12-13 19:47:02,298 INFO L288 CegarLoopForPetriNet]: 32 programPoint places, 57 predicate places. [2022-12-13 19:47:02,299 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 130 transitions, 1773 flow [2022-12-13 19:47:02,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 142.54545454545453) internal successors, (1568), 11 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:47:02,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:47:02,300 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:47:02,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:47:02,300 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 19:47:02,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:02,300 INFO L85 PathProgramCache]: Analyzing trace with hash -834487518, now seen corresponding path program 6 times [2022-12-13 19:47:02,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:02,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62602129] [2022-12-13 19:47:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:02,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:47:02,334 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:47:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:47:02,384 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:47:02,385 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:47:02,385 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-12-13 19:47:02,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-12-13 19:47:02,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-12-13 19:47:02,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-12-13 19:47:02,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-12-13 19:47:02,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-12-13 19:47:02,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-12-13 19:47:02,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-12-13 19:47:02,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:47:02,388 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1] [2022-12-13 19:47:02,393 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 19:47:02,394 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:47:02,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:47:02 BasicIcfg [2022-12-13 19:47:02,430 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:47:02,430 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:47:02,430 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:47:02,430 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:47:02,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:46:36" (3/4) ... [2022-12-13 19:47:02,433 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 19:47:02,479 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 19:47:02,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:47:02,480 INFO L158 Benchmark]: Toolchain (without parser) took 27572.35ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 108.2MB in the beginning and 149.0MB in the end (delta: -40.8MB). Peak memory consumption was 86.0MB. Max. memory is 16.1GB. [2022-12-13 19:47:02,480 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:47:02,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 636.64ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 52.6MB in the end (delta: 55.1MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-12-13 19:47:02,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.29ms. Allocated memory is still 142.6MB. Free memory was 52.6MB in the beginning and 49.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 19:47:02,481 INFO L158 Benchmark]: Boogie Preprocessor took 27.41ms. Allocated memory is still 142.6MB. Free memory was 49.4MB in the beginning and 46.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:47:02,481 INFO L158 Benchmark]: RCFGBuilder took 495.03ms. Allocated memory is still 142.6MB. Free memory was 46.8MB in the beginning and 90.2MB in the end (delta: -43.3MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2022-12-13 19:47:02,482 INFO L158 Benchmark]: TraceAbstraction took 26318.51ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 90.2MB in the beginning and 156.3MB in the end (delta: -66.1MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. [2022-12-13 19:47:02,482 INFO L158 Benchmark]: Witness Printer took 49.19ms. Allocated memory is still 268.4MB. Free memory was 156.3MB in the beginning and 149.0MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 19:47:02,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 636.64ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 52.6MB in the end (delta: 55.1MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.29ms. Allocated memory is still 142.6MB. Free memory was 52.6MB in the beginning and 49.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.41ms. Allocated memory is still 142.6MB. Free memory was 49.4MB in the beginning and 46.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 495.03ms. Allocated memory is still 142.6MB. Free memory was 46.8MB in the beginning and 90.2MB in the end (delta: -43.3MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * TraceAbstraction took 26318.51ms. Allocated memory was 142.6MB in the beginning and 268.4MB in the end (delta: 125.8MB). Free memory was 90.2MB in the beginning and 156.3MB in the end (delta: -66.1MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. * Witness Printer took 49.19ms. Allocated memory is still 268.4MB. Free memory was 156.3MB in the beginning and 149.0MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.2s, 172 PlacesBefore, 32 PlacesAfterwards, 172 TransitionsBefore, 28 TransitionsAfterwards, 1764 CoEnabledTransitionPairs, 8 FixpointIterations, 113 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 20 ConcurrentYvCompositions, 4 ChoiceCompositions, 193 TotalNumberOfCompositions, 3321 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1606, independent: 1444, independent conditional: 0, independent unconditional: 1444, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 947, independent: 905, independent conditional: 0, independent unconditional: 905, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1606, independent: 539, independent conditional: 0, independent unconditional: 539, dependent: 120, dependent conditional: 0, dependent unconditional: 120, unknown: 947, unknown conditional: 0, unknown unconditional: 947] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; [L1688] 0 struct device *my_dev; [L1733] CALL, EXPR 0 my_drv_init() [L1727] 0 return 0; [L1733] RET, EXPR 0 my_drv_init() [L1733] 0 int ret = my_drv_init(); [L1734] COND TRUE 0 ret==0 [L1735] 0 int probe_ret; [L1736] 0 struct my_data data; [L1737] CALL, EXPR 0 my_drv_probe(&data) [L1705] 0 data->shared.a = 0 [L1706] 0 data->shared.b = 0 [L1707] EXPR 0 data->shared.a [L1707] CALL 0 ldv_assert(data->shared.a==0) [L1675] COND FALSE 0 !(!expression) [L1707] RET 0 ldv_assert(data->shared.a==0) [L1708] EXPR 0 data->shared.b [L1708] CALL 0 ldv_assert(data->shared.b==0) [L1675] COND FALSE 0 !(!expression) [L1708] RET 0 ldv_assert(data->shared.b==0) [L1709] 0 int res = __VERIFIER_nondet_int(); [L1710] COND FALSE 0 !(\read(res)) [L1712] 0 my_dev = &data->dev [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, ((void *)0)) VAL [arg={0:0}, data={6:0}, data={6:0}, my_dev={6:24}, pthread_create(&t1, ((void *)0), my_callback, ((void *)0))=-2, res=0, t1={3:0}, t2={4:0}] [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, ((void *)0)) VAL [arg={0:0}, data={6:0}, data={6:0}, my_dev={6:24}, pthread_create(&t2, ((void *)0), my_callback, ((void *)0))=-1, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; [L1737] RET, EXPR 0 my_drv_probe(&data) [L1737] 0 probe_ret = my_drv_probe(&data) [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 1 data->shared.a = 1 VAL [__mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1696] EXPR 1 data->shared.b [L1696] 1 int lb = data->shared.b; [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 2 data->shared.a = 1 VAL [__mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, lb=0, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1738] COND TRUE 0 probe_ret==0 [L1739] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; [L1722] 0 \read(t1) VAL [\read(t1)=-2, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, data={6:0}, data={6:0}, lb=0, my_dev={6:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1696] EXPR 2 data->shared.b [L1696] 2 int lb = data->shared.b; [L1699] 2 data->shared.b = lb + 1 [L1701] 2 return 0; [L1699] 1 data->shared.b = lb + 1 [L1701] 1 return 0; [L1722] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=-2, \result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, data={6:0}, data={6:0}, lb=0, my_dev={6:24}, pthread_join(t1, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1723] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, data={6:0}, data={6:0}, lb=0, my_dev={6:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1723] FCALL, JOIN 2 pthread_join(t2, &status) VAL [\read(t2)=-1, \result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, data={6:0}, data={6:0}, lb=0, my_dev={6:24}, pthread_join(t2, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1739] RET 0 my_drv_disconnect(&data) [L1740] EXPR 0 data.shared.a [L1740] CALL 0 ldv_assert(data.shared.a==1) [L1675] COND FALSE 0 !(!expression) [L1740] RET 0 ldv_assert(data.shared.a==1) [L1741] EXPR 0 data.shared.b [L1741] CALL 0 ldv_assert(data.shared.b==2) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, expression=0, lb=0, my_dev={6:24}, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 190 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.2s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2084 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1616 mSDsluCounter, 1109 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1074 mSDsCounter, 200 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10323 IncrementalHoareTripleChecker+Invalid, 10523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 200 mSolverCounterUnsat, 35 mSDtfsCounter, 10323 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1773occurred in iteration=11, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 2753 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-13 19:47:02,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97ad0e16-bad0-48c3-ae33-fa89d0602c78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE