./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-atomic/szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/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_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-atomic/szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 --- 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 18:47:33,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:47:33,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:47:33,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:47:33,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:47:33,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:47:33,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:47:33,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:47:33,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:47:33,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:47:33,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:47:33,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:47:33,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:47:33,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:47:33,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:47:33,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:47:33,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:47:33,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:47:33,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:47:33,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:47:33,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:47:33,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:47:33,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:47:33,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:47:33,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:47:33,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:47:33,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:47:33,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:47:33,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:47:33,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:47:33,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:47:33,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:47:33,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:47:33,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:47:33,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:47:33,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:47:33,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:47:33,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:47:33,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:47:33,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:47:33,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:47:33,225 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 18:47:33,239 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:47:33,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:47:33,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:47:33,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:47:33,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:47:33,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:47:33,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:47:33,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:47:33,240 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:47:33,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:47:33,241 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:47:33,241 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:47:33,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:47:33,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:47:33,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:47:33,241 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 18:47:33,241 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 18:47:33,241 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 18:47:33,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:47:33,241 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 18:47:33,241 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:47:33,242 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:47:33,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:47:33,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:47:33,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:47:33,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:47:33,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:47:33,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:47:33,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:47:33,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:47:33,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:47:33,243 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:47:33,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:47:33,243 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:47:33,243 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_c9b60217-b735-45db-865c-5f489df2d1b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 [2022-12-13 18:47:33,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:47:33,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:47:33,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:47:33,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:47:33,460 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:47:33,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-atomic/szymanski.i [2022-12-13 18:47:36,033 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:47:36,206 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:47:36,207 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/sv-benchmarks/c/pthread-atomic/szymanski.i [2022-12-13 18:47:36,215 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8/data/217664ec4/443e766f31be494887cef45e1a7dadb4/FLAG4da1ba3aa [2022-12-13 18:47:36,601 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8/data/217664ec4/443e766f31be494887cef45e1a7dadb4 [2022-12-13 18:47:36,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:47:36,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:47:36,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:47:36,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:47:36,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:47:36,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:47:36" (1/1) ... [2022-12-13 18:47:36,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2896b7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36, skipping insertion in model container [2022-12-13 18:47:36,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:47:36" (1/1) ... [2022-12-13 18:47:36,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:47:36,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:47:36,742 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 18:47:36,812 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,814 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,817 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,818 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,819 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_c9b60217-b735-45db-865c-5f489df2d1b9/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2022-12-13 18:47:36,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,822 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,823 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,824 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,825 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,826 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,827 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,828 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_c9b60217-b735-45db-865c-5f489df2d1b9/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2022-12-13 18:47:36,828 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,829 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:47:36,840 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:47:36,850 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-13 18:47:36,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,868 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,869 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,870 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,871 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_c9b60217-b735-45db-865c-5f489df2d1b9/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2022-12-13 18:47:36,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,872 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,875 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,876 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,877 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,878 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,878 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_c9b60217-b735-45db-865c-5f489df2d1b9/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2022-12-13 18:47:36,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,879 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:47:36,880 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:47:36,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:47:36,904 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:47:36,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36 WrapperNode [2022-12-13 18:47:36,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:47:36,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:47:36,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:47:36,906 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:47:36,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36" (1/1) ... [2022-12-13 18:47:36,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36" (1/1) ... [2022-12-13 18:47:36,933 INFO L138 Inliner]: procedures = 171, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2022-12-13 18:47:36,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:47:36,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:47:36,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:47:36,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:47:36,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36" (1/1) ... [2022-12-13 18:47:36,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36" (1/1) ... [2022-12-13 18:47:36,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36" (1/1) ... [2022-12-13 18:47:36,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36" (1/1) ... [2022-12-13 18:47:36,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36" (1/1) ... [2022-12-13 18:47:36,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36" (1/1) ... [2022-12-13 18:47:36,951 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36" (1/1) ... [2022-12-13 18:47:36,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36" (1/1) ... [2022-12-13 18:47:36,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:47:36,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:47:36,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:47:36,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:47:36,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36" (1/1) ... [2022-12-13 18:47:36,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:47:36,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:47:36,980 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:47:36,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:47:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:47:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-12-13 18:47:37,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-12-13 18:47:37,016 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-12-13 18:47:37,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-12-13 18:47:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:47:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 18:47:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:47:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:47:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:47:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:47:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 18:47:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:47:37,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:47:37,019 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 18:47:37,116 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:47:37,117 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:47:37,273 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:47:37,280 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:47:37,280 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-12-13 18:47:37,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:47:37 BoogieIcfgContainer [2022-12-13 18:47:37,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:47:37,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:47:37,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:47:37,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:47:37,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:47:36" (1/3) ... [2022-12-13 18:47:37,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad20edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:47:37, skipping insertion in model container [2022-12-13 18:47:37,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:47:36" (2/3) ... [2022-12-13 18:47:37,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad20edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:47:37, skipping insertion in model container [2022-12-13 18:47:37,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:47:37" (3/3) ... [2022-12-13 18:47:37,287 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2022-12-13 18:47:37,301 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:47:37,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-13 18:47:37,301 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:47:37,354 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 18:47:37,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 129 transitions, 274 flow [2022-12-13 18:47:37,414 INFO L130 PetriNetUnfolder]: 20/127 cut-off events. [2022-12-13 18:47:37,414 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:47:37,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 127 events. 20/127 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 183 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2022-12-13 18:47:37,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 129 transitions, 274 flow [2022-12-13 18:47:37,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 122 transitions, 256 flow [2022-12-13 18:47:37,425 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:47:37,432 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 122 transitions, 256 flow [2022-12-13 18:47:37,434 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 122 transitions, 256 flow [2022-12-13 18:47:37,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 122 transitions, 256 flow [2022-12-13 18:47:37,453 INFO L130 PetriNetUnfolder]: 20/122 cut-off events. [2022-12-13 18:47:37,454 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:47:37,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 122 events. 20/122 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 183 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2022-12-13 18:47:37,457 INFO L119 LiptonReduction]: Number of co-enabled transitions 4248 [2022-12-13 18:47:39,158 INFO L134 LiptonReduction]: Checked pairs total: 10242 [2022-12-13 18:47:39,158 INFO L136 LiptonReduction]: Total number of compositions: 94 [2022-12-13 18:47:39,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:47:39,178 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@1a0587c3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:47:39,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-12-13 18:47:39,180 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 18:47:39,181 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:47:39,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:39,181 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 18:47:39,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:47:39,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:39,186 INFO L85 PathProgramCache]: Analyzing trace with hash 547, now seen corresponding path program 1 times [2022-12-13 18:47:39,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:39,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409368788] [2022-12-13 18:47:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:39,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:39,285 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 18:47:39,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:39,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409368788] [2022-12-13 18:47:39,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409368788] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:39,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:39,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 18:47:39,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475310919] [2022-12-13 18:47:39,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:39,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:47:39,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:39,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:47:39,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:47:39,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 223 [2022-12-13 18:47:39,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 56 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 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 18:47:39,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:39,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 223 [2022-12-13 18:47:39,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:39,499 INFO L130 PetriNetUnfolder]: 1625/2536 cut-off events. [2022-12-13 18:47:39,500 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-12-13 18:47:39,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4799 conditions, 2536 events. 1625/2536 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 12626 event pairs, 812 based on Foata normal form. 0/1365 useless extension candidates. Maximal degree in co-relation 4507. Up to 2224 conditions per place. [2022-12-13 18:47:39,512 INFO L137 encePairwiseOnDemand]: 220/223 looper letters, 40 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2022-12-13 18:47:39,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 198 flow [2022-12-13 18:47:39,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:47:39,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 18:47:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 273 transitions. [2022-12-13 18:47:39,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6121076233183856 [2022-12-13 18:47:39,523 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 273 transitions. [2022-12-13 18:47:39,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 273 transitions. [2022-12-13 18:47:39,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:39,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 273 transitions. [2022-12-13 18:47:39,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 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 18:47:39,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 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 18:47:39,532 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 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 18:47:39,533 INFO L175 Difference]: Start difference. First operand has 52 places, 56 transitions, 124 flow. Second operand 2 states and 273 transitions. [2022-12-13 18:47:39,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 198 flow [2022-12-13 18:47:39,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 190 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 18:47:39,538 INFO L231 Difference]: Finished difference. Result has 47 places, 53 transitions, 110 flow [2022-12-13 18:47:39,539 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=47, PETRI_TRANSITIONS=53} [2022-12-13 18:47:39,542 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2022-12-13 18:47:39,542 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 53 transitions, 110 flow [2022-12-13 18:47:39,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 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 18:47:39,543 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:39,543 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 18:47:39,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:47:39,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:47:39,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:39,544 INFO L85 PathProgramCache]: Analyzing trace with hash 540185, now seen corresponding path program 1 times [2022-12-13 18:47:39,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:39,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549575579] [2022-12-13 18:47:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:39,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:39,670 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 18:47:39,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:39,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549575579] [2022-12-13 18:47:39,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549575579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:39,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:39,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:47:39,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421639184] [2022-12-13 18:47:39,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:39,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:47:39,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:39,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:47:39,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:47:39,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 223 [2022-12-13 18:47:39,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 53 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 18:47:39,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:39,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 223 [2022-12-13 18:47:39,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:39,876 INFO L130 PetriNetUnfolder]: 1591/2474 cut-off events. [2022-12-13 18:47:39,876 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:47:39,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4654 conditions, 2474 events. 1591/2474 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12224 event pairs, 792 based on Foata normal form. 0/1342 useless extension candidates. Maximal degree in co-relation 4651. Up to 2165 conditions per place. [2022-12-13 18:47:39,886 INFO L137 encePairwiseOnDemand]: 219/223 looper letters, 36 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2022-12-13 18:47:39,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 182 flow [2022-12-13 18:47:39,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:47:39,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:47:39,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2022-12-13 18:47:39,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5351270553064275 [2022-12-13 18:47:39,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2022-12-13 18:47:39,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2022-12-13 18:47:39,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:39,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2022-12-13 18:47:39,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 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 18:47:39,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:39,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:39,891 INFO L175 Difference]: Start difference. First operand has 47 places, 53 transitions, 110 flow. Second operand 3 states and 358 transitions. [2022-12-13 18:47:39,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 182 flow [2022-12-13 18:47:39,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:47:39,892 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 110 flow [2022-12-13 18:47:39,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2022-12-13 18:47:39,893 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2022-12-13 18:47:39,893 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 110 flow [2022-12-13 18:47:39,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 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 18:47:39,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:39,893 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 18:47:39,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:47:39,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:47:39,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:39,894 INFO L85 PathProgramCache]: Analyzing trace with hash 540186, now seen corresponding path program 1 times [2022-12-13 18:47:39,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:39,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379711807] [2022-12-13 18:47:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:39,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:39,967 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 18:47:39,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:39,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379711807] [2022-12-13 18:47:39,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379711807] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:39,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:39,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:47:39,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331092668] [2022-12-13 18:47:39,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:39,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:47:39,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:39,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:47:39,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:47:39,994 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 223 [2022-12-13 18:47:39,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 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 18:47:39,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:39,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 223 [2022-12-13 18:47:39,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:40,130 INFO L130 PetriNetUnfolder]: 1557/2412 cut-off events. [2022-12-13 18:47:40,130 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:47:40,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4538 conditions, 2412 events. 1557/2412 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11814 event pairs, 772 based on Foata normal form. 0/1319 useless extension candidates. Maximal degree in co-relation 4534. Up to 2108 conditions per place. [2022-12-13 18:47:40,139 INFO L137 encePairwiseOnDemand]: 219/223 looper letters, 34 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2022-12-13 18:47:40,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 178 flow [2022-12-13 18:47:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:47:40,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:47:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2022-12-13 18:47:40,142 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5500747384155455 [2022-12-13 18:47:40,142 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2022-12-13 18:47:40,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2022-12-13 18:47:40,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:40,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2022-12-13 18:47:40,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 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 18:47:40,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:40,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:40,146 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 110 flow. Second operand 3 states and 368 transitions. [2022-12-13 18:47:40,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 178 flow [2022-12-13 18:47:40,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:47:40,147 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 106 flow [2022-12-13 18:47:40,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2022-12-13 18:47:40,147 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2022-12-13 18:47:40,147 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 106 flow [2022-12-13 18:47:40,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 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 18:47:40,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:40,148 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:47:40,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:47:40,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:47:40,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:40,149 INFO L85 PathProgramCache]: Analyzing trace with hash 519130310, now seen corresponding path program 1 times [2022-12-13 18:47:40,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:40,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927592441] [2022-12-13 18:47:40,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:40,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:40,229 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 18:47:40,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:40,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927592441] [2022-12-13 18:47:40,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927592441] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:40,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:40,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:47:40,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845493847] [2022-12-13 18:47:40,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:40,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:47:40,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:40,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:47:40,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:47:40,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 223 [2022-12-13 18:47:40,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 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 18:47:40,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:40,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 223 [2022-12-13 18:47:40,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:40,378 INFO L130 PetriNetUnfolder]: 1149/1805 cut-off events. [2022-12-13 18:47:40,378 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:47:40,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 1805 events. 1149/1805 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8484 event pairs, 555 based on Foata normal form. 0/1046 useless extension candidates. Maximal degree in co-relation 3392. Up to 1573 conditions per place. [2022-12-13 18:47:40,384 INFO L137 encePairwiseOnDemand]: 220/223 looper letters, 33 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2022-12-13 18:47:40,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 174 flow [2022-12-13 18:47:40,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:47:40,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:47:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2022-12-13 18:47:40,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5112107623318386 [2022-12-13 18:47:40,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2022-12-13 18:47:40,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2022-12-13 18:47:40,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:40,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2022-12-13 18:47:40,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 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 18:47:40,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:40,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:40,388 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 106 flow. Second operand 3 states and 342 transitions. [2022-12-13 18:47:40,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 174 flow [2022-12-13 18:47:40,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:47:40,389 INFO L231 Difference]: Finished difference. Result has 44 places, 48 transitions, 104 flow [2022-12-13 18:47:40,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=48} [2022-12-13 18:47:40,390 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -8 predicate places. [2022-12-13 18:47:40,390 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 48 transitions, 104 flow [2022-12-13 18:47:40,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 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 18:47:40,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:40,390 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 18:47:40,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:47:40,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:47:40,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:40,391 INFO L85 PathProgramCache]: Analyzing trace with hash 519130311, now seen corresponding path program 1 times [2022-12-13 18:47:40,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:40,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192019323] [2022-12-13 18:47:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:40,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:40,462 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 18:47:40,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:40,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192019323] [2022-12-13 18:47:40,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192019323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:40,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:40,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:47:40,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124486786] [2022-12-13 18:47:40,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:40,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:47:40,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:40,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:47:40,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:47:40,497 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 223 [2022-12-13 18:47:40,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 18:47:40,498 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:40,498 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 223 [2022-12-13 18:47:40,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:40,600 INFO L130 PetriNetUnfolder]: 741/1198 cut-off events. [2022-12-13 18:47:40,600 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 18:47:40,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2254 conditions, 1198 events. 741/1198 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5294 event pairs, 338 based on Foata normal form. 0/773 useless extension candidates. Maximal degree in co-relation 2250. Up to 1038 conditions per place. [2022-12-13 18:47:40,606 INFO L137 encePairwiseOnDemand]: 220/223 looper letters, 32 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2022-12-13 18:47:40,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 170 flow [2022-12-13 18:47:40,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:47:40,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:47:40,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2022-12-13 18:47:40,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5366218236173393 [2022-12-13 18:47:40,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2022-12-13 18:47:40,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2022-12-13 18:47:40,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:40,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2022-12-13 18:47:40,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 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 18:47:40,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:40,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:40,612 INFO L175 Difference]: Start difference. First operand has 44 places, 48 transitions, 104 flow. Second operand 3 states and 359 transitions. [2022-12-13 18:47:40,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 170 flow [2022-12-13 18:47:40,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:47:40,613 INFO L231 Difference]: Finished difference. Result has 43 places, 47 transitions, 102 flow [2022-12-13 18:47:40,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=47} [2022-12-13 18:47:40,614 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2022-12-13 18:47:40,614 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 102 flow [2022-12-13 18:47:40,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 18:47:40,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:40,615 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:47:40,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:47:40,615 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:47:40,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:40,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2031850000, now seen corresponding path program 1 times [2022-12-13 18:47:40,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:40,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845627549] [2022-12-13 18:47:40,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:40,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:40,643 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 18:47:40,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:40,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845627549] [2022-12-13 18:47:40,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845627549] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:40,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:40,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:47:40,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917765102] [2022-12-13 18:47:40,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:40,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:47:40,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:40,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:47:40,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:47:40,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 223 [2022-12-13 18:47:40,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:40,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:40,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 223 [2022-12-13 18:47:40,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:40,779 INFO L130 PetriNetUnfolder]: 801/1306 cut-off events. [2022-12-13 18:47:40,779 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 18:47:40,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2474 conditions, 1306 events. 801/1306 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5799 event pairs, 222 based on Foata normal form. 0/849 useless extension candidates. Maximal degree in co-relation 2470. Up to 759 conditions per place. [2022-12-13 18:47:40,785 INFO L137 encePairwiseOnDemand]: 218/223 looper letters, 52 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2022-12-13 18:47:40,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 67 transitions, 256 flow [2022-12-13 18:47:40,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:47:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:47:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-12-13 18:47:40,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.57847533632287 [2022-12-13 18:47:40,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-12-13 18:47:40,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-12-13 18:47:40,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:40,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-12-13 18:47:40,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 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 18:47:40,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:40,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:40,791 INFO L175 Difference]: Start difference. First operand has 43 places, 47 transitions, 102 flow. Second operand 3 states and 387 transitions. [2022-12-13 18:47:40,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 67 transitions, 256 flow [2022-12-13 18:47:40,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 67 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:47:40,793 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 118 flow [2022-12-13 18:47:40,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2022-12-13 18:47:40,794 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2022-12-13 18:47:40,794 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 118 flow [2022-12-13 18:47:40,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:40,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:40,795 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:47:40,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:47:40,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:47:40,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:40,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1311950339, now seen corresponding path program 1 times [2022-12-13 18:47:40,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:40,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204063707] [2022-12-13 18:47:40,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:40,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:40,828 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 18:47:40,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:40,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204063707] [2022-12-13 18:47:40,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204063707] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:40,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:40,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:47:40,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89691270] [2022-12-13 18:47:40,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:40,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:47:40,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:40,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:47:40,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:47:40,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 223 [2022-12-13 18:47:40,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 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 18:47:40,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:40,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 223 [2022-12-13 18:47:40,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:40,960 INFO L130 PetriNetUnfolder]: 691/1164 cut-off events. [2022-12-13 18:47:40,960 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-12-13 18:47:40,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 1164 events. 691/1164 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5220 event pairs, 223 based on Foata normal form. 34/877 useless extension candidates. Maximal degree in co-relation 2323. Up to 761 conditions per place. [2022-12-13 18:47:40,968 INFO L137 encePairwiseOnDemand]: 219/223 looper letters, 50 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2022-12-13 18:47:40,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 65 transitions, 258 flow [2022-12-13 18:47:40,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:47:40,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:47:40,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-12-13 18:47:40,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5739910313901345 [2022-12-13 18:47:40,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-12-13 18:47:40,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-12-13 18:47:40,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:40,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-12-13 18:47:40,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 18:47:40,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:40,972 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:40,972 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 118 flow. Second operand 3 states and 384 transitions. [2022-12-13 18:47:40,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 65 transitions, 258 flow [2022-12-13 18:47:40,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:47:40,974 INFO L231 Difference]: Finished difference. Result has 46 places, 48 transitions, 122 flow [2022-12-13 18:47:40,974 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2022-12-13 18:47:40,975 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2022-12-13 18:47:40,975 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 122 flow [2022-12-13 18:47:40,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 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 18:47:40,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:40,975 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:47:40,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:47:40,976 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:47:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash -128286283, now seen corresponding path program 1 times [2022-12-13 18:47:40,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:40,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660475474] [2022-12-13 18:47:40,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:41,016 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 18:47:41,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:41,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660475474] [2022-12-13 18:47:41,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660475474] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:41,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:41,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:47:41,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319426239] [2022-12-13 18:47:41,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:41,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:47:41,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:41,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:47:41,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:47:41,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 223 [2022-12-13 18:47:41,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 18:47:41,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:41,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 223 [2022-12-13 18:47:41,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:41,250 INFO L130 PetriNetUnfolder]: 1064/1707 cut-off events. [2022-12-13 18:47:41,250 INFO L131 PetriNetUnfolder]: For 313/313 co-relation queries the response was YES. [2022-12-13 18:47:41,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3530 conditions, 1707 events. 1064/1707 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 7515 event pairs, 208 based on Foata normal form. 22/1355 useless extension candidates. Maximal degree in co-relation 3524. Up to 556 conditions per place. [2022-12-13 18:47:41,261 INFO L137 encePairwiseOnDemand]: 206/223 looper letters, 71 selfloop transitions, 24 changer transitions 0/102 dead transitions. [2022-12-13 18:47:41,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 102 transitions, 441 flow [2022-12-13 18:47:41,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:47:41,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:47:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 573 transitions. [2022-12-13 18:47:41,265 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5139013452914798 [2022-12-13 18:47:41,265 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 573 transitions. [2022-12-13 18:47:41,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 573 transitions. [2022-12-13 18:47:41,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:41,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 573 transitions. [2022-12-13 18:47:41,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:47:41,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 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 18:47:41,272 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 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 18:47:41,272 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 122 flow. Second operand 5 states and 573 transitions. [2022-12-13 18:47:41,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 102 transitions, 441 flow [2022-12-13 18:47:41,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 102 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:47:41,276 INFO L231 Difference]: Finished difference. Result has 53 places, 68 transitions, 298 flow [2022-12-13 18:47:41,277 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=53, PETRI_TRANSITIONS=68} [2022-12-13 18:47:41,277 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2022-12-13 18:47:41,277 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 68 transitions, 298 flow [2022-12-13 18:47:41,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 18:47:41,278 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:41,278 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:47:41,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:47:41,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:47:41,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:41,279 INFO L85 PathProgramCache]: Analyzing trace with hash 765666263, now seen corresponding path program 2 times [2022-12-13 18:47:41,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:41,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98240849] [2022-12-13 18:47:41,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:41,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:41,304 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 18:47:41,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:41,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98240849] [2022-12-13 18:47:41,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98240849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:41,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:41,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:47:41,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514847599] [2022-12-13 18:47:41,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:41,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:47:41,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:41,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:47:41,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:47:41,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 223 [2022-12-13 18:47:41,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 68 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 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 18:47:41,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:41,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 223 [2022-12-13 18:47:41,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:41,467 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([501] L752-->thr1EXIT: Formula: (and (= v_~flag1~0_46 0) (or (not (<= 2 v_thr1Thread1of1ForFork1_~f21~0_69)) (not (<= v_thr1Thread1of1ForFork1_~f21~0_69 3))) (= |v_thr1Thread1of1ForFork1_#res.base_7| 0) (= |v_thr1Thread1of1ForFork1_#res.offset_7| 0)) InVars {thr1Thread1of1ForFork1_~f21~0=v_thr1Thread1of1ForFork1_~f21~0_69} OutVars{thr1Thread1of1ForFork1_~f21~0=v_thr1Thread1of1ForFork1_~f21~0_69, ~flag1~0=v_~flag1~0_46, thr1Thread1of1ForFork1_#res.base=|v_thr1Thread1of1ForFork1_#res.base_7|, thr1Thread1of1ForFork1_#res.offset=|v_thr1Thread1of1ForFork1_#res.offset_7|} AuxVars[] AssignedVars[~flag1~0, thr1Thread1of1ForFork1_#res.base, thr1Thread1of1ForFork1_#res.offset][70], [Black: 151#true, Black: 140#true, 72#L799true, Black: 153#(<= 3 ~flag1~0), 154#(<= 3 thr2Thread1of1ForFork0_~f12~0), 162#true, Black: 148#(= ~x~0 1), 21#L819-4true, 64#thr1EXITtrue, 119#true, Black: 156#(and (<= 3 ~flag1~0) (<= 3 thr2Thread1of1ForFork0_~f12~0))]) [2022-12-13 18:47:41,467 INFO L383 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2022-12-13 18:47:41,467 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-12-13 18:47:41,467 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-12-13 18:47:41,467 INFO L386 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2022-12-13 18:47:41,471 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([501] L752-->thr1EXIT: Formula: (and (= v_~flag1~0_46 0) (or (not (<= 2 v_thr1Thread1of1ForFork1_~f21~0_69)) (not (<= v_thr1Thread1of1ForFork1_~f21~0_69 3))) (= |v_thr1Thread1of1ForFork1_#res.base_7| 0) (= |v_thr1Thread1of1ForFork1_#res.offset_7| 0)) InVars {thr1Thread1of1ForFork1_~f21~0=v_thr1Thread1of1ForFork1_~f21~0_69} OutVars{thr1Thread1of1ForFork1_~f21~0=v_thr1Thread1of1ForFork1_~f21~0_69, ~flag1~0=v_~flag1~0_46, thr1Thread1of1ForFork1_#res.base=|v_thr1Thread1of1ForFork1_#res.base_7|, thr1Thread1of1ForFork1_#res.offset=|v_thr1Thread1of1ForFork1_#res.offset_7|} AuxVars[] AssignedVars[~flag1~0, thr1Thread1of1ForFork1_#res.base, thr1Thread1of1ForFork1_#res.offset][70], [Black: 151#true, Black: 140#true, 72#L799true, Black: 153#(<= 3 ~flag1~0), 154#(<= 3 thr2Thread1of1ForFork0_~f12~0), 162#true, Black: 148#(= ~x~0 1), 64#thr1EXITtrue, 52#L820-1true, 119#true, Black: 156#(and (<= 3 ~flag1~0) (<= 3 thr2Thread1of1ForFork0_~f12~0))]) [2022-12-13 18:47:41,471 INFO L383 tUnfolder$Statistics]: this new event has 23 ancestors and is cut-off event [2022-12-13 18:47:41,471 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2022-12-13 18:47:41,471 INFO L386 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2022-12-13 18:47:41,471 INFO L386 tUnfolder$Statistics]: existing Event has 21 ancestors and is cut-off event [2022-12-13 18:47:41,497 INFO L130 PetriNetUnfolder]: 1073/1782 cut-off events. [2022-12-13 18:47:41,497 INFO L131 PetriNetUnfolder]: For 1673/1775 co-relation queries the response was YES. [2022-12-13 18:47:41,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5130 conditions, 1782 events. 1073/1782 cut-off events. For 1673/1775 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 8539 event pairs, 354 based on Foata normal form. 39/1693 useless extension candidates. Maximal degree in co-relation 5121. Up to 1308 conditions per place. [2022-12-13 18:47:41,505 INFO L137 encePairwiseOnDemand]: 218/223 looper letters, 67 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2022-12-13 18:47:41,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 89 transitions, 531 flow [2022-12-13 18:47:41,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:47:41,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:47:41,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-12-13 18:47:41,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5739910313901345 [2022-12-13 18:47:41,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-12-13 18:47:41,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-12-13 18:47:41,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:41,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-12-13 18:47:41,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 18:47:41,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:41,508 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:41,508 INFO L175 Difference]: Start difference. First operand has 53 places, 68 transitions, 298 flow. Second operand 3 states and 384 transitions. [2022-12-13 18:47:41,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 89 transitions, 531 flow [2022-12-13 18:47:41,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 531 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 18:47:41,512 INFO L231 Difference]: Finished difference. Result has 57 places, 72 transitions, 350 flow [2022-12-13 18:47:41,512 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=57, PETRI_TRANSITIONS=72} [2022-12-13 18:47:41,513 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2022-12-13 18:47:41,513 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 72 transitions, 350 flow [2022-12-13 18:47:41,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 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 18:47:41,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:41,513 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:47:41,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:47:41,513 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:47:41,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:41,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1157049559, now seen corresponding path program 3 times [2022-12-13 18:47:41,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:41,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482320751] [2022-12-13 18:47:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:41,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:41,541 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 18:47:41,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:41,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482320751] [2022-12-13 18:47:41,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482320751] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:41,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:41,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:47:41,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053757267] [2022-12-13 18:47:41,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:41,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:47:41,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:41,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:47:41,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:47:41,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 223 [2022-12-13 18:47:41,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 72 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 18:47:41,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:41,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 223 [2022-12-13 18:47:41,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:41,816 INFO L130 PetriNetUnfolder]: 1113/1880 cut-off events. [2022-12-13 18:47:41,816 INFO L131 PetriNetUnfolder]: For 2266/2343 co-relation queries the response was YES. [2022-12-13 18:47:41,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5563 conditions, 1880 events. 1113/1880 cut-off events. For 2266/2343 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 9015 event pairs, 311 based on Foata normal form. 82/1901 useless extension candidates. Maximal degree in co-relation 5552. Up to 924 conditions per place. [2022-12-13 18:47:41,823 INFO L137 encePairwiseOnDemand]: 207/223 looper letters, 88 selfloop transitions, 23 changer transitions 11/135 dead transitions. [2022-12-13 18:47:41,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 135 transitions, 873 flow [2022-12-13 18:47:41,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:47:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:47:41,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 570 transitions. [2022-12-13 18:47:41,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5112107623318386 [2022-12-13 18:47:41,825 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 570 transitions. [2022-12-13 18:47:41,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 570 transitions. [2022-12-13 18:47:41,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:41,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 570 transitions. [2022-12-13 18:47:41,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 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 18:47:41,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 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 18:47:41,828 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 223.0) internal successors, (1338), 6 states have internal predecessors, (1338), 0 states have call successors, (0), 0 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 18:47:41,828 INFO L175 Difference]: Start difference. First operand has 57 places, 72 transitions, 350 flow. Second operand 5 states and 570 transitions. [2022-12-13 18:47:41,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 135 transitions, 873 flow [2022-12-13 18:47:41,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 135 transitions, 839 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 18:47:41,833 INFO L231 Difference]: Finished difference. Result has 61 places, 83 transitions, 494 flow [2022-12-13 18:47:41,833 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=61, PETRI_TRANSITIONS=83} [2022-12-13 18:47:41,833 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2022-12-13 18:47:41,833 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 83 transitions, 494 flow [2022-12-13 18:47:41,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 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 18:47:41,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:41,834 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:47:41,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:47:41,834 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:47:41,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1798511214, now seen corresponding path program 1 times [2022-12-13 18:47:41,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:41,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981543960] [2022-12-13 18:47:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:41,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:41,868 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 18:47:41,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:41,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981543960] [2022-12-13 18:47:41,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981543960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:41,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:41,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:47:41,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424832830] [2022-12-13 18:47:41,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:41,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:47:41,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:41,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:47:41,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:47:41,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 223 [2022-12-13 18:47:41,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 83 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 18:47:41,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:41,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 223 [2022-12-13 18:47:41,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:42,028 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L787-->L792: Formula: (and (= 4 v_thr2Thread1of1ForFork0_~f12~0_In_1) (= v_~flag2~0_Out_2 4)) InVars {thr2Thread1of1ForFork0_~f12~0=v_thr2Thread1of1ForFork0_~f12~0_In_1} OutVars{~flag2~0=v_~flag2~0_Out_2, thr2Thread1of1ForFork0_~f12~0=v_thr2Thread1of1ForFork0_~f12~0_In_1} AuxVars[] AssignedVars[~flag2~0][77], [Black: 151#true, Black: 153#(<= 3 ~flag1~0), 170#(<= 4 ~flag2~0), Black: 164#(= ~flag1~0 1), 91#L792true, 119#true, Black: 171#(<= 4 thr1Thread1of1ForFork1_~f21~0), Black: 140#true, Black: 168#true, Black: 173#(and (<= 4 thr1Thread1of1ForFork1_~f21~0) (<= 4 ~flag2~0)), 156#(and (<= 3 ~flag1~0) (<= 3 thr2Thread1of1ForFork0_~f12~0)), 179#true, Black: 148#(= ~x~0 1), 21#L819-4true, 45#L742true, Black: 154#(<= 3 thr2Thread1of1ForFork0_~f12~0)]) [2022-12-13 18:47:42,028 INFO L383 tUnfolder$Statistics]: this new event has 19 ancestors and is cut-off event [2022-12-13 18:47:42,028 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-12-13 18:47:42,028 INFO L386 tUnfolder$Statistics]: existing Event has 17 ancestors and is cut-off event [2022-12-13 18:47:42,028 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-12-13 18:47:42,036 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([483] L787-->L792: Formula: (and (= 4 v_thr2Thread1of1ForFork0_~f12~0_In_1) (= v_~flag2~0_Out_2 4)) InVars {thr2Thread1of1ForFork0_~f12~0=v_thr2Thread1of1ForFork0_~f12~0_In_1} OutVars{~flag2~0=v_~flag2~0_Out_2, thr2Thread1of1ForFork0_~f12~0=v_thr2Thread1of1ForFork0_~f12~0_In_1} AuxVars[] AssignedVars[~flag2~0][77], [Black: 151#true, Black: 153#(<= 3 ~flag1~0), 170#(<= 4 ~flag2~0), Black: 164#(= ~flag1~0 1), 91#L792true, 52#L820-1true, 119#true, Black: 171#(<= 4 thr1Thread1of1ForFork1_~f21~0), Black: 140#true, Black: 168#true, Black: 173#(and (<= 4 thr1Thread1of1ForFork1_~f21~0) (<= 4 ~flag2~0)), 179#true, 156#(and (<= 3 ~flag1~0) (<= 3 thr2Thread1of1ForFork0_~f12~0)), Black: 148#(= ~x~0 1), 45#L742true, Black: 154#(<= 3 thr2Thread1of1ForFork0_~f12~0)]) [2022-12-13 18:47:42,036 INFO L383 tUnfolder$Statistics]: this new event has 20 ancestors and is cut-off event [2022-12-13 18:47:42,036 INFO L386 tUnfolder$Statistics]: existing Event has 19 ancestors and is cut-off event [2022-12-13 18:47:42,036 INFO L386 tUnfolder$Statistics]: existing Event has 18 ancestors and is cut-off event [2022-12-13 18:47:42,037 INFO L386 tUnfolder$Statistics]: existing Event has 20 ancestors and is cut-off event [2022-12-13 18:47:42,102 INFO L130 PetriNetUnfolder]: 1280/2219 cut-off events. [2022-12-13 18:47:42,102 INFO L131 PetriNetUnfolder]: For 5268/5437 co-relation queries the response was YES. [2022-12-13 18:47:42,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7992 conditions, 2219 events. 1280/2219 cut-off events. For 5268/5437 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11633 event pairs, 292 based on Foata normal form. 55/2176 useless extension candidates. Maximal degree in co-relation 7978. Up to 1329 conditions per place. [2022-12-13 18:47:42,112 INFO L137 encePairwiseOnDemand]: 216/223 looper letters, 88 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2022-12-13 18:47:42,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 117 transitions, 889 flow [2022-12-13 18:47:42,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:47:42,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:47:42,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-12-13 18:47:42,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.57847533632287 [2022-12-13 18:47:42,114 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-12-13 18:47:42,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-12-13 18:47:42,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:42,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-12-13 18:47:42,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 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 18:47:42,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:42,116 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:42,116 INFO L175 Difference]: Start difference. First operand has 61 places, 83 transitions, 494 flow. Second operand 3 states and 387 transitions. [2022-12-13 18:47:42,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 117 transitions, 889 flow [2022-12-13 18:47:42,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 117 transitions, 882 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:47:42,122 INFO L231 Difference]: Finished difference. Result has 63 places, 90 transitions, 581 flow [2022-12-13 18:47:42,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=581, PETRI_PLACES=63, PETRI_TRANSITIONS=90} [2022-12-13 18:47:42,123 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2022-12-13 18:47:42,123 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 90 transitions, 581 flow [2022-12-13 18:47:42,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 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 18:47:42,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:47:42,123 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:47:42,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:47:42,123 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2022-12-13 18:47:42,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:47:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1574065858, now seen corresponding path program 2 times [2022-12-13 18:47:42,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:47:42,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317618287] [2022-12-13 18:47:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:47:42,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:47:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:47:42,308 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 18:47:42,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:47:42,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317618287] [2022-12-13 18:47:42,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317618287] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:47:42,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:47:42,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:47:42,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279708573] [2022-12-13 18:47:42,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:47:42,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:47:42,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:47:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:47:42,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:47:42,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 223 [2022-12-13 18:47:42,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 90 transitions, 581 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 18:47:42,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:47:42,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 223 [2022-12-13 18:47:42,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:47:42,571 INFO L130 PetriNetUnfolder]: 1284/2216 cut-off events. [2022-12-13 18:47:42,571 INFO L131 PetriNetUnfolder]: For 6590/6800 co-relation queries the response was YES. [2022-12-13 18:47:42,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8494 conditions, 2216 events. 1284/2216 cut-off events. For 6590/6800 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11569 event pairs, 412 based on Foata normal form. 61/2181 useless extension candidates. Maximal degree in co-relation 8480. Up to 1838 conditions per place. [2022-12-13 18:47:42,577 INFO L137 encePairwiseOnDemand]: 221/223 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2022-12-13 18:47:42,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 715 flow [2022-12-13 18:47:42,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:47:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:47:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2022-12-13 18:47:42,579 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5171898355754858 [2022-12-13 18:47:42,579 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2022-12-13 18:47:42,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2022-12-13 18:47:42,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:47:42,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2022-12-13 18:47:42,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 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 18:47:42,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:42,584 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 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 18:47:42,584 INFO L175 Difference]: Start difference. First operand has 63 places, 90 transitions, 581 flow. Second operand 3 states and 346 transitions. [2022-12-13 18:47:42,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 715 flow [2022-12-13 18:47:42,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 89 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:47:42,593 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2022-12-13 18:47:42,593 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2022-12-13 18:47:42,594 INFO L288 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2022-12-13 18:47:42,594 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2022-12-13 18:47:42,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 18:47:42,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2022-12-13 18:47:42,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2022-12-13 18:47:42,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2022-12-13 18:47:42,597 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2022-12-13 18:47:42,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2022-12-13 18:47:42,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2022-12-13 18:47:42,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2022-12-13 18:47:42,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2022-12-13 18:47:42,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2022-12-13 18:47:42,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2022-12-13 18:47:42,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2022-12-13 18:47:42,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2022-12-13 18:47:42,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2022-12-13 18:47:42,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2022-12-13 18:47:42,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2022-12-13 18:47:42,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:47:42,599 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:47:42,604 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 18:47:42,604 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:47:42,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:47:42 BasicIcfg [2022-12-13 18:47:42,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:47:42,608 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:47:42,608 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:47:42,608 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:47:42,609 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:47:37" (3/4) ... [2022-12-13 18:47:42,611 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 18:47:42,616 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-12-13 18:47:42,616 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-12-13 18:47:42,620 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-12-13 18:47:42,620 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 18:47:42,620 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 18:47:42,621 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 18:47:42,650 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:47:42,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:47:42,651 INFO L158 Benchmark]: Toolchain (without parser) took 6046.94ms. Allocated memory is still 151.0MB. Free memory was 116.2MB in the beginning and 66.8MB in the end (delta: 49.3MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2022-12-13 18:47:42,651 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory is still 48.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:47:42,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.14ms. Allocated memory is still 151.0MB. Free memory was 115.7MB in the beginning and 89.3MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-12-13 18:47:42,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.66ms. Allocated memory is still 151.0MB. Free memory was 89.3MB in the beginning and 87.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:47:42,652 INFO L158 Benchmark]: Boogie Preprocessor took 20.58ms. Allocated memory is still 151.0MB. Free memory was 87.6MB in the beginning and 86.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:47:42,652 INFO L158 Benchmark]: RCFGBuilder took 327.27ms. Allocated memory is still 151.0MB. Free memory was 86.0MB in the beginning and 112.8MB in the end (delta: -26.8MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2022-12-13 18:47:42,653 INFO L158 Benchmark]: TraceAbstraction took 5324.41ms. Allocated memory is still 151.0MB. Free memory was 111.9MB in the beginning and 68.9MB in the end (delta: 43.0MB). Peak memory consumption was 87.9MB. Max. memory is 16.1GB. [2022-12-13 18:47:42,653 INFO L158 Benchmark]: Witness Printer took 42.44ms. Allocated memory is still 151.0MB. Free memory was 68.9MB in the beginning and 66.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:47:42,655 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 98.6MB. Free memory is still 48.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.14ms. Allocated memory is still 151.0MB. Free memory was 115.7MB in the beginning and 89.3MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.66ms. Allocated memory is still 151.0MB. Free memory was 89.3MB in the beginning and 87.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.58ms. Allocated memory is still 151.0MB. Free memory was 87.6MB in the beginning and 86.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 327.27ms. Allocated memory is still 151.0MB. Free memory was 86.0MB in the beginning and 112.8MB in the end (delta: -26.8MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5324.41ms. Allocated memory is still 151.0MB. Free memory was 111.9MB in the beginning and 68.9MB in the end (delta: 43.0MB). Peak memory consumption was 87.9MB. Max. memory is 16.1GB. * Witness Printer took 42.44ms. Allocated memory is still 151.0MB. Free memory was 68.9MB in the beginning and 66.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 109 PlacesBefore, 52 PlacesAfterwards, 122 TransitionsBefore, 56 TransitionsAfterwards, 4248 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 9 ChoiceCompositions, 94 TotalNumberOfCompositions, 10242 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4426, independent: 4175, independent conditional: 0, independent unconditional: 4175, dependent: 251, dependent conditional: 0, dependent unconditional: 251, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2021, independent: 1979, independent conditional: 0, independent unconditional: 1979, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4426, independent: 2196, independent conditional: 0, independent unconditional: 2196, dependent: 209, dependent conditional: 0, dependent unconditional: 209, unknown: 2021, unknown conditional: 0, unknown unconditional: 2021] , Statistics on independence cache: Total cache size (in pairs): 238, Positive cache size: 212, Positive conditional cache size: 0, Positive unconditional cache size: 212, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 802]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 745]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 816]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 166 locations, 15 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: 5.2s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 904 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 589 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1307 IncrementalHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 75 mSDtfsCounter, 1307 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=581occurred in iteration=11, InterpolantAutomatonStates: 39, 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, 0.6s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 698 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 18:47:42,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9b60217-b735-45db-865c-5f489df2d1b9/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 Result: TRUE