./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.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_b3f453d1-cb4e-4f4a-822c-40b7e7256837/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/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_b3f453d1-cb4e-4f4a-822c-40b7e7256837/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/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_b3f453d1-cb4e-4f4a-822c-40b7e7256837/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 da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da --- 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 12:47:40,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:47:40,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:47:40,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:47:40,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:47:40,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:47:40,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:47:40,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:47:40,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:47:40,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:47:40,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:47:40,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:47:40,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:47:40,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:47:40,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:47:40,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:47:40,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:47:40,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:47:40,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:47:40,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:47:40,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:47:40,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:47:40,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:47:40,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:47:40,773 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:47:40,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:47:40,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:47:40,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:47:40,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:47:40,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:47:40,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:47:40,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:47:40,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:47:40,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:47:40,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:47:40,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:47:40,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:47:40,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:47:40,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:47:40,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:47:40,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:47:40,784 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:47:40,809 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:47:40,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:47:40,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:47:40,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:47:40,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:47:40,820 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:47:40,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:47:40,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:47:40,821 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:47:40,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:47:40,822 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:47:40,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:47:40,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:47:40,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:47:40,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:47:40,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:47:40,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:47:40,823 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:47:40,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:47:40,823 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:47:40,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:47:40,824 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:47:40,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:47:40,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:47:40,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:47:40,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:47:40,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:47:40,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:47:40,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:47:40,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:47:40,825 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:47:40,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:47:40,825 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:47:40,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:47:40,825 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:47:40,826 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_b3f453d1-cb4e-4f4a-822c-40b7e7256837/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da [2022-12-13 12:47:40,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:47:41,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:47:41,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:47:41,012 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:47:41,012 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:47:41,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2022-12-13 12:47:43,563 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:47:43,830 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:47:43,831 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/sv-benchmarks/c/ldv-races/race-2_4-container_of.i [2022-12-13 12:47:43,851 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/bin/uautomizer-uyxdKDjOR8/data/7055233e7/2db6baea20e74ea3ac9c0ad7c2580143/FLAG62a808d50 [2022-12-13 12:47:44,136 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/bin/uautomizer-uyxdKDjOR8/data/7055233e7/2db6baea20e74ea3ac9c0ad7c2580143 [2022-12-13 12:47:44,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:47:44,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:47:44,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:47:44,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:47:44,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:47:44,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:47:44" (1/1) ... [2022-12-13 12:47:44,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79276de6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44, skipping insertion in model container [2022-12-13 12:47:44,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:47:44" (1/1) ... [2022-12-13 12:47:44,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:47:44,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:47:44,285 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 12:47:44,679 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_b3f453d1-cb4e-4f4a-822c-40b7e7256837/sv-benchmarks/c/ldv-races/race-2_4-container_of.i[75002,75015] [2022-12-13 12:47:44,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,687 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:47:44,717 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:47:44,725 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 12:47:44,745 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_b3f453d1-cb4e-4f4a-822c-40b7e7256837/sv-benchmarks/c/ldv-races/race-2_4-container_of.i[75002,75015] [2022-12-13 12:47:44,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,747 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,748 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,748 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,749 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,754 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,755 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 12:47:44,756 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 12:47:44,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:47:44,842 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:47:44,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44 WrapperNode [2022-12-13 12:47:44,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:47:44,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:47:44,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:47:44,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:47:44,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44" (1/1) ... [2022-12-13 12:47:44,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44" (1/1) ... [2022-12-13 12:47:44,882 INFO L138 Inliner]: procedures = 469, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 143 [2022-12-13 12:47:44,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:47:44,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:47:44,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:47:44,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:47:44,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44" (1/1) ... [2022-12-13 12:47:44,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44" (1/1) ... [2022-12-13 12:47:44,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44" (1/1) ... [2022-12-13 12:47:44,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44" (1/1) ... [2022-12-13 12:47:44,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44" (1/1) ... [2022-12-13 12:47:44,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44" (1/1) ... [2022-12-13 12:47:44,905 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44" (1/1) ... [2022-12-13 12:47:44,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44" (1/1) ... [2022-12-13 12:47:44,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:47:44,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:47:44,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:47:44,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:47:44,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44" (1/1) ... [2022-12-13 12:47:44,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:47:44,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:47:44,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:47:44,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:47:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 12:47:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:47:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 12:47:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:47:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 12:47:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:47:44,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 12:47:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:47:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:47:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-12-13 12:47:44,973 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-12-13 12:47:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:47:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:47:44,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:47:44,975 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 12:47:45,195 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:47:45,197 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:47:45,389 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:47:45,433 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:47:45,433 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 12:47:45,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:47:45 BoogieIcfgContainer [2022-12-13 12:47:45,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:47:45,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:47:45,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:47:45,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:47:45,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:47:44" (1/3) ... [2022-12-13 12:47:45,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8eb717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:47:45, skipping insertion in model container [2022-12-13 12:47:45,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:47:44" (2/3) ... [2022-12-13 12:47:45,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8eb717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:47:45, skipping insertion in model container [2022-12-13 12:47:45,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:47:45" (3/3) ... [2022-12-13 12:47:45,442 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of.i [2022-12-13 12:47:45,448 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:47:45,456 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:47:45,456 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 12:47:45,456 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:47:45,503 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 12:47:45,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 175 transitions, 366 flow [2022-12-13 12:47:45,608 INFO L130 PetriNetUnfolder]: 8/226 cut-off events. [2022-12-13 12:47:45,608 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:47:45,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 226 events. 8/226 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 427 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 122. Up to 4 conditions per place. [2022-12-13 12:47:45,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 175 transitions, 366 flow [2022-12-13 12:47:45,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 161 transitions, 334 flow [2022-12-13 12:47:45,620 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:47:45,627 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 161 transitions, 334 flow [2022-12-13 12:47:45,629 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 161 transitions, 334 flow [2022-12-13 12:47:45,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 161 transitions, 334 flow [2022-12-13 12:47:45,666 INFO L130 PetriNetUnfolder]: 5/203 cut-off events. [2022-12-13 12:47:45,666 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:47:45,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 203 events. 5/203 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 366 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2022-12-13 12:47:45,669 INFO L119 LiptonReduction]: Number of co-enabled transitions 2964 [2022-12-13 12:47:56,648 INFO L134 LiptonReduction]: Checked pairs total: 7476 [2022-12-13 12:47:56,648 INFO L136 LiptonReduction]: Total number of compositions: 161 [2022-12-13 12:47:56,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:47:56,662 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;@1ee2b3b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:47:56,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-13 12:47:56,665 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-12-13 12:47:56,666 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:47:56,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:47:56,666 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 12:47:56,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 12:47:56,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:47:56,670 INFO L85 PathProgramCache]: Analyzing trace with hash 614996395, now seen corresponding path program 1 times [2022-12-13 12:47:56,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:47:56,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278445724] [2022-12-13 12:47:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:47:56,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:47:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:47:57,041 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 12:47:57,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:47:57,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278445724] [2022-12-13 12:47:57,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278445724] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:47:57,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:47:57,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:47:57,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589441835] [2022-12-13 12:47:57,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:47:57,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:47:57,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:47:57,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:47:57,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:47:57,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2022-12-13 12:47:57,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 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 12:47:57,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:47:57,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2022-12-13 12:47:57,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:47:57,425 INFO L130 PetriNetUnfolder]: 882/1496 cut-off events. [2022-12-13 12:47:57,425 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 12:47:57,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3002 conditions, 1496 events. 882/1496 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7355 event pairs, 637 based on Foata normal form. 37/1350 useless extension candidates. Maximal degree in co-relation 2904. Up to 1262 conditions per place. [2022-12-13 12:47:57,437 INFO L137 encePairwiseOnDemand]: 328/336 looper letters, 39 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2022-12-13 12:47:57,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 196 flow [2022-12-13 12:47:57,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:47:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:47:57,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2022-12-13 12:47:57,453 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46726190476190477 [2022-12-13 12:47:57,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2022-12-13 12:47:57,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2022-12-13 12:47:57,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:47:57,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2022-12-13 12:47:57,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 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 12:47:57,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:57,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:57,473 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 84 flow. Second operand 3 states and 471 transitions. [2022-12-13 12:47:57,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 196 flow [2022-12-13 12:47:57,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 12:47:57,481 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 110 flow [2022-12-13 12:47:57,483 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2022-12-13 12:47:57,486 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2022-12-13 12:47:57,487 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 110 flow [2022-12-13 12:47:57,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 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 12:47:57,488 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:47:57,488 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:47:57,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:47:57,488 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 12:47:57,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:47:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash 19838595, now seen corresponding path program 1 times [2022-12-13 12:47:57,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:47:57,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228775751] [2022-12-13 12:47:57,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:47:57,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:47:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:47:57,647 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 12:47:57,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:47:57,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228775751] [2022-12-13 12:47:57,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228775751] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:47:57,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:47:57,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:47:57,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482373692] [2022-12-13 12:47:57,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:47:57,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:47:57,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:47:57,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:47:57,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:47:57,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 336 [2022-12-13 12:47:57,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 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 12:47:57,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:47:57,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 336 [2022-12-13 12:47:57,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:47:57,960 INFO L130 PetriNetUnfolder]: 930/1618 cut-off events. [2022-12-13 12:47:57,960 INFO L131 PetriNetUnfolder]: For 324/324 co-relation queries the response was YES. [2022-12-13 12:47:57,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3805 conditions, 1618 events. 930/1618 cut-off events. For 324/324 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8572 event pairs, 681 based on Foata normal form. 0/1441 useless extension candidates. Maximal degree in co-relation 2140. Up to 1405 conditions per place. [2022-12-13 12:47:57,969 INFO L137 encePairwiseOnDemand]: 329/336 looper letters, 41 selfloop transitions, 9 changer transitions 1/54 dead transitions. [2022-12-13 12:47:57,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 262 flow [2022-12-13 12:47:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:47:57,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:47:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2022-12-13 12:47:57,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4632936507936508 [2022-12-13 12:47:57,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2022-12-13 12:47:57,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2022-12-13 12:47:57,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:47:57,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2022-12-13 12:47:57,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 12:47:57,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:57,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:57,978 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 110 flow. Second operand 3 states and 467 transitions. [2022-12-13 12:47:57,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 262 flow [2022-12-13 12:47:57,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 54 transitions, 252 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:47:57,982 INFO L231 Difference]: Finished difference. Result has 41 places, 46 transitions, 177 flow [2022-12-13 12:47:57,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=41, PETRI_TRANSITIONS=46} [2022-12-13 12:47:57,983 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2022-12-13 12:47:57,983 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 46 transitions, 177 flow [2022-12-13 12:47:57,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 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 12:47:57,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:47:57,983 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 12:47:57,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:47:57,984 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 12:47:57,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:47:57,984 INFO L85 PathProgramCache]: Analyzing trace with hash 19860277, now seen corresponding path program 1 times [2022-12-13 12:47:57,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:47:57,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888719325] [2022-12-13 12:47:57,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:47:57,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:47:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:47:58,061 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 12:47:58,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:47:58,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888719325] [2022-12-13 12:47:58,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888719325] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:47:58,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:47:58,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:47:58,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344830277] [2022-12-13 12:47:58,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:47:58,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:47:58,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:47:58,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:47:58,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:47:58,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 336 [2022-12-13 12:47:58,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 46 transitions, 177 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 12:47:58,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:47:58,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 336 [2022-12-13 12:47:58,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:47:58,244 INFO L130 PetriNetUnfolder]: 743/1380 cut-off events. [2022-12-13 12:47:58,245 INFO L131 PetriNetUnfolder]: For 758/800 co-relation queries the response was YES. [2022-12-13 12:47:58,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3451 conditions, 1380 events. 743/1380 cut-off events. For 758/800 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7989 event pairs, 612 based on Foata normal form. 1/1290 useless extension candidates. Maximal degree in co-relation 1425. Up to 1140 conditions per place. [2022-12-13 12:47:58,251 INFO L137 encePairwiseOnDemand]: 333/336 looper letters, 33 selfloop transitions, 0 changer transitions 2/47 dead transitions. [2022-12-13 12:47:58,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 252 flow [2022-12-13 12:47:58,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:47:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:47:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2022-12-13 12:47:58,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2022-12-13 12:47:58,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2022-12-13 12:47:58,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2022-12-13 12:47:58,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:47:58,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2022-12-13 12:47:58,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 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 12:47:58,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:58,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:58,256 INFO L175 Difference]: Start difference. First operand has 41 places, 46 transitions, 177 flow. Second operand 3 states and 492 transitions. [2022-12-13 12:47:58,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 252 flow [2022-12-13 12:47:58,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:47:58,257 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 170 flow [2022-12-13 12:47:58,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2022-12-13 12:47:58,258 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2022-12-13 12:47:58,258 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 170 flow [2022-12-13 12:47:58,258 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 12:47:58,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:47:58,259 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:47:58,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:47:58,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 12:47:58,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:47:58,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1381633471, now seen corresponding path program 1 times [2022-12-13 12:47:58,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:47:58,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997713594] [2022-12-13 12:47:58,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:47:58,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:47:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:47:58,438 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 12:47:58,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:47:58,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997713594] [2022-12-13 12:47:58,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997713594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:47:58,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:47:58,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:47:58,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153772044] [2022-12-13 12:47:58,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:47:58,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:47:58,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:47:58,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:47:58,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:47:58,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 336 [2022-12-13 12:47:58,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 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 12:47:58,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:47:58,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 336 [2022-12-13 12:47:58,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:47:58,737 INFO L130 PetriNetUnfolder]: 1116/1965 cut-off events. [2022-12-13 12:47:58,737 INFO L131 PetriNetUnfolder]: For 1082/1082 co-relation queries the response was YES. [2022-12-13 12:47:58,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5112 conditions, 1965 events. 1116/1965 cut-off events. For 1082/1082 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 11263 event pairs, 627 based on Foata normal form. 0/1864 useless extension candidates. Maximal degree in co-relation 5106. Up to 1562 conditions per place. [2022-12-13 12:47:58,744 INFO L137 encePairwiseOnDemand]: 328/336 looper letters, 50 selfloop transitions, 7 changer transitions 0/60 dead transitions. [2022-12-13 12:47:58,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 331 flow [2022-12-13 12:47:58,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:47:58,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:47:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2022-12-13 12:47:58,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2022-12-13 12:47:58,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2022-12-13 12:47:58,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2022-12-13 12:47:58,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:47:58,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2022-12-13 12:47:58,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 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 12:47:58,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:58,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:58,749 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 170 flow. Second operand 3 states and 472 transitions. [2022-12-13 12:47:58,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 331 flow [2022-12-13 12:47:58,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 60 transitions, 327 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 12:47:58,752 INFO L231 Difference]: Finished difference. Result has 45 places, 51 transitions, 236 flow [2022-12-13 12:47:58,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=45, PETRI_TRANSITIONS=51} [2022-12-13 12:47:58,753 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2022-12-13 12:47:58,753 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 51 transitions, 236 flow [2022-12-13 12:47:58,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 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 12:47:58,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:47:58,754 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:47:58,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:47:58,754 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 12:47:58,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:47:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash -119034956, now seen corresponding path program 1 times [2022-12-13 12:47:58,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:47:58,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046385685] [2022-12-13 12:47:58,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:47:58,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:47:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:47:58,862 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 12:47:58,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:47:58,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046385685] [2022-12-13 12:47:58,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046385685] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:47:58,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:47:58,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:47:58,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078575171] [2022-12-13 12:47:58,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:47:58,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:47:58,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:47:58,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:47:58,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:47:58,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 336 [2022-12-13 12:47:58,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 51 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 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 12:47:58,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:47:58,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 336 [2022-12-13 12:47:58,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:47:59,192 INFO L130 PetriNetUnfolder]: 1407/2451 cut-off events. [2022-12-13 12:47:59,192 INFO L131 PetriNetUnfolder]: For 2795/2795 co-relation queries the response was YES. [2022-12-13 12:47:59,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7198 conditions, 2451 events. 1407/2451 cut-off events. For 2795/2795 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 14092 event pairs, 767 based on Foata normal form. 0/2386 useless extension candidates. Maximal degree in co-relation 7191. Up to 1890 conditions per place. [2022-12-13 12:47:59,202 INFO L137 encePairwiseOnDemand]: 328/336 looper letters, 56 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2022-12-13 12:47:59,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 70 transitions, 475 flow [2022-12-13 12:47:59,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:47:59,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:47:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2022-12-13 12:47:59,204 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46924603174603174 [2022-12-13 12:47:59,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2022-12-13 12:47:59,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2022-12-13 12:47:59,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:47:59,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2022-12-13 12:47:59,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 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 12:47:59,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:59,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:59,207 INFO L175 Difference]: Start difference. First operand has 45 places, 51 transitions, 236 flow. Second operand 3 states and 473 transitions. [2022-12-13 12:47:59,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 70 transitions, 475 flow [2022-12-13 12:47:59,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 419 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-12-13 12:47:59,210 INFO L231 Difference]: Finished difference. Result has 47 places, 61 transitions, 330 flow [2022-12-13 12:47:59,211 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=47, PETRI_TRANSITIONS=61} [2022-12-13 12:47:59,211 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2022-12-13 12:47:59,211 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 61 transitions, 330 flow [2022-12-13 12:47:59,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 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 12:47:59,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:47:59,212 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:47:59,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 12:47:59,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 12:47:59,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:47:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash -201636691, now seen corresponding path program 1 times [2022-12-13 12:47:59,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:47:59,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082662907] [2022-12-13 12:47:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:47:59,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:47:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:47:59,269 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 12:47:59,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:47:59,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082662907] [2022-12-13 12:47:59,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082662907] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:47:59,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:47:59,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:47:59,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114559212] [2022-12-13 12:47:59,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:47:59,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:47:59,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:47:59,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:47:59,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:47:59,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 336 [2022-12-13 12:47:59,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 61 transitions, 330 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 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 12:47:59,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:47:59,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 336 [2022-12-13 12:47:59,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:47:59,494 INFO L130 PetriNetUnfolder]: 774/1420 cut-off events. [2022-12-13 12:47:59,494 INFO L131 PetriNetUnfolder]: For 2090/2147 co-relation queries the response was YES. [2022-12-13 12:47:59,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4389 conditions, 1420 events. 774/1420 cut-off events. For 2090/2147 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8075 event pairs, 435 based on Foata normal form. 57/1372 useless extension candidates. Maximal degree in co-relation 4381. Up to 1048 conditions per place. [2022-12-13 12:47:59,502 INFO L137 encePairwiseOnDemand]: 333/336 looper letters, 39 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2022-12-13 12:47:59,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 354 flow [2022-12-13 12:47:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:47:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:47:59,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2022-12-13 12:47:59,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49007936507936506 [2022-12-13 12:47:59,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2022-12-13 12:47:59,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2022-12-13 12:47:59,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:47:59,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2022-12-13 12:47:59,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 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 12:47:59,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:59,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 336.0) internal successors, (1344), 4 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:47:59,509 INFO L175 Difference]: Start difference. First operand has 47 places, 61 transitions, 330 flow. Second operand 3 states and 494 transitions. [2022-12-13 12:47:59,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 354 flow [2022-12-13 12:47:59,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 290 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-12-13 12:47:59,516 INFO L231 Difference]: Finished difference. Result has 38 places, 44 transitions, 188 flow [2022-12-13 12:47:59,517 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=336, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=38, PETRI_TRANSITIONS=44} [2022-12-13 12:47:59,517 INFO L288 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2022-12-13 12:47:59,517 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 44 transitions, 188 flow [2022-12-13 12:47:59,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 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 12:47:59,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:47:59,518 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:47:59,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 12:47:59,518 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-12-13 12:47:59,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:47:59,519 INFO L85 PathProgramCache]: Analyzing trace with hash -200894259, now seen corresponding path program 1 times [2022-12-13 12:47:59,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:47:59,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375209936] [2022-12-13 12:47:59,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:47:59,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:47:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:47:59,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 12:47:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 12:47:59,605 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 12:47:59,605 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 12:47:59,606 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-12-13 12:47:59,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-12-13 12:47:59,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-12-13 12:47:59,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-12-13 12:47:59,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-12-13 12:47:59,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-12-13 12:47:59,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-12-13 12:47:59,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-12-13 12:47:59,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 12:47:59,610 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:47:59,615 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 12:47:59,615 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 12:47:59,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 12:47:59 BasicIcfg [2022-12-13 12:47:59,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 12:47:59,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 12:47:59,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 12:47:59,646 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 12:47:59,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:47:45" (3/4) ... [2022-12-13 12:47:59,648 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 12:47:59,690 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 12:47:59,690 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 12:47:59,690 INFO L158 Benchmark]: Toolchain (without parser) took 15551.55ms. Allocated memory was 136.3MB in the beginning and 178.3MB in the end (delta: 41.9MB). Free memory was 98.6MB in the beginning and 80.4MB in the end (delta: 18.2MB). Peak memory consumption was 62.2MB. Max. memory is 16.1GB. [2022-12-13 12:47:59,691 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 136.3MB. Free memory is still 106.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 12:47:59,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 702.92ms. Allocated memory was 136.3MB in the beginning and 178.3MB in the end (delta: 41.9MB). Free memory was 98.3MB in the beginning and 125.2MB in the end (delta: -26.9MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. [2022-12-13 12:47:59,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.93ms. Allocated memory is still 178.3MB. Free memory was 125.2MB in the beginning and 122.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:47:59,691 INFO L158 Benchmark]: Boogie Preprocessor took 26.78ms. Allocated memory is still 178.3MB. Free memory was 122.3MB in the beginning and 119.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 12:47:59,692 INFO L158 Benchmark]: RCFGBuilder took 524.58ms. Allocated memory is still 178.3MB. Free memory was 118.9MB in the beginning and 91.6MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 12:47:59,692 INFO L158 Benchmark]: TraceAbstraction took 14207.97ms. Allocated memory is still 178.3MB. Free memory was 91.6MB in the beginning and 84.6MB in the end (delta: 7.0MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2022-12-13 12:47:59,692 INFO L158 Benchmark]: Witness Printer took 44.29ms. Allocated memory is still 178.3MB. Free memory was 84.6MB in the beginning and 80.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 12:47:59,693 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 136.3MB. Free memory is still 106.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 702.92ms. Allocated memory was 136.3MB in the beginning and 178.3MB in the end (delta: 41.9MB). Free memory was 98.3MB in the beginning and 125.2MB in the end (delta: -26.9MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.93ms. Allocated memory is still 178.3MB. Free memory was 125.2MB in the beginning and 122.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.78ms. Allocated memory is still 178.3MB. Free memory was 122.3MB in the beginning and 119.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 524.58ms. Allocated memory is still 178.3MB. Free memory was 118.9MB in the beginning and 91.6MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 14207.97ms. Allocated memory is still 178.3MB. Free memory was 91.6MB in the beginning and 84.6MB in the end (delta: 7.0MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Witness Printer took 44.29ms. Allocated memory is still 178.3MB. Free memory was 84.6MB in the beginning and 80.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.0s, 163 PlacesBefore, 40 PlacesAfterwards, 161 TransitionsBefore, 36 TransitionsAfterwards, 2964 CoEnabledTransitionPairs, 7 FixpointIterations, 85 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 161 TotalNumberOfCompositions, 7476 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2969, independent: 2679, independent conditional: 0, independent unconditional: 2679, dependent: 290, dependent conditional: 0, dependent unconditional: 290, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1550, independent: 1498, independent conditional: 0, independent unconditional: 1498, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2969, independent: 1181, independent conditional: 0, independent unconditional: 1181, dependent: 238, dependent conditional: 0, dependent unconditional: 238, unknown: 1550, unknown conditional: 0, unknown unconditional: 1550] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 56, Positive conditional cache size: 0, Positive unconditional cache size: 56, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, 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; [L1745] CALL, EXPR 0 my_drv_init() [L1739] 0 return 0; [L1745] RET, EXPR 0 my_drv_init() [L1745] 0 int ret = my_drv_init(); [L1746] COND TRUE 0 ret==0 [L1747] 0 int probe_ret; [L1748] 0 struct my_data data; [L1749] CALL, EXPR 0 my_drv_probe(&data) [L1706] 0 struct device *d = &data->dev; [L1708] 0 data->shared.a = 0 [L1709] 0 data->shared.b = 0 [L1710] 0 int res = __VERIFIER_nondet_int(); [L1711] COND FALSE 0 !(\read(res)) [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={6:24}, d={6:24}, data={6:0}, data={6:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=0, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, d={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=1, pthread_mutex_lock (&data->lock)=0, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; [L1749] RET, EXPR 0 my_drv_probe(&data) [L1749] 0 probe_ret = my_drv_probe(&data) [L1750] COND TRUE 0 probe_ret==0 [L1751] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; [L1723] 0 data->shared.a = 3 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_mutex_lock (&data->lock)=0, status={5:0}, t1={3:0}, t2={4:0}] [L1694] 1 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1726] 0 data->shared.b = 3 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1729] EXPR 0 data->shared.a [L1729] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, expression=0, 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, 185 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: 14.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 270 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 574 IncrementalHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 26 mSDtfsCounter, 574 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=330occurred in iteration=5, InterpolantAutomatonStates: 18, 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 12:47:59,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3f453d1-cb4e-4f4a-822c-40b7e7256837/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE