./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R --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 9df54eb091d78e0f82ec179542e5b1e4fed45243a056538ca557e474796bb018 --- 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-38b53e6 [2022-11-25 17:07:26,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:07:26,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:07:26,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:07:26,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:07:26,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:07:26,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:07:26,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:07:26,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:07:26,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:07:26,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:07:26,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:07:26,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:07:26,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:07:26,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:07:26,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:07:26,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:07:26,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:07:26,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:07:26,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:07:26,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:07:26,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:07:26,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:07:26,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:07:26,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:07:26,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:07:26,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:07:26,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:07:26,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:07:26,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:07:26,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:07:26,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:07:26,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:07:26,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:07:26,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:07:26,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:07:26,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:07:26,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:07:26,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:07:26,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:07:26,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:07:26,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 17:07:26,824 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:07:26,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:07:26,825 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:07:26,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:07:26,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:07:26,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:07:26,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:07:26,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:07:26,828 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:07:26,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:07:26,829 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:07:26,830 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:07:26,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:07:26,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:07:26,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:07:26,831 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:07:26,831 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:07:26,831 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:07:26,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:07:26,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:07:26,832 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:07:26,832 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:07:26,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:07:26,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:07:26,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:07:26,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:07:26,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:07:26,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:07:26,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:07:26,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:07:26,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:07:26,835 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:07:26,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:07:26,835 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_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9df54eb091d78e0f82ec179542e5b1e4fed45243a056538ca557e474796bb018 [2022-11-25 17:07:27,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:07:27,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:07:27,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:07:27,128 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:07:27,129 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:07:27,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2022-11-25 17:07:30,118 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:07:30,419 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:07:30,419 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2022-11-25 17:07:30,433 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/data/d2353a9d6/11b40bdf41f94773ab5874cf5a6a668f/FLAG1bd75bfe8 [2022-11-25 17:07:30,448 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/data/d2353a9d6/11b40bdf41f94773ab5874cf5a6a668f [2022-11-25 17:07:30,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:07:30,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:07:30,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:07:30,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:07:30,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:07:30,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:07:30" (1/1) ... [2022-11-25 17:07:30,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f75ed1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:30, skipping insertion in model container [2022-11-25 17:07:30,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:07:30" (1/1) ... [2022-11-25 17:07:30,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:07:30,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:07:30,712 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_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i[967,980] [2022-11-25 17:07:30,894 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:30,895 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:30,895 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:30,896 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:30,897 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:30,906 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:30,906 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:30,907 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:30,908 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:30,911 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:30,911 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:30,911 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:30,912 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:30,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:30,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:30,923 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:30,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:30,940 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:30,941 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:30,943 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:30,944 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:30,964 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:30,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:07:30,981 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:07:30,995 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_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i[967,980] [2022-11-25 17:07:31,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:31,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:31,029 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:31,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:31,030 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:31,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:31,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:31,033 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:31,034 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:31,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:31,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:31,043 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:31,044 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:31,056 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:31,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:31,058 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:31,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:31,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:31,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:31,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:31,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:31,078 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:31,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:07:31,128 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:07:31,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:31 WrapperNode [2022-11-25 17:07:31,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:07:31,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:07:31,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:07:31,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:07:31,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:31" (1/1) ... [2022-11-25 17:07:31,176 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:31" (1/1) ... [2022-11-25 17:07:31,220 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 126 [2022-11-25 17:07:31,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:07:31,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:07:31,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:07:31,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:07:31,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:31" (1/1) ... [2022-11-25 17:07:31,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:31" (1/1) ... [2022-11-25 17:07:31,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:31" (1/1) ... [2022-11-25 17:07:31,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:31" (1/1) ... [2022-11-25 17:07:31,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:31" (1/1) ... [2022-11-25 17:07:31,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:31" (1/1) ... [2022-11-25 17:07:31,271 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:31" (1/1) ... [2022-11-25 17:07:31,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:31" (1/1) ... [2022-11-25 17:07:31,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:07:31,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:07:31,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:07:31,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:07:31,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:31" (1/1) ... [2022-11-25 17:07:31,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:07:31,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:07:31,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:07:31,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:07:31,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:07:31,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:07:31,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:07:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:07:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:07:31,369 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 17:07:31,370 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 17:07:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 17:07:31,370 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 17:07:31,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:07:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:07:31,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:07:31,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:07:31,373 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:07:31,580 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:07:31,582 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:07:31,899 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:07:32,093 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:07:32,093 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:07:32,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:07:32 BoogieIcfgContainer [2022-11-25 17:07:32,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:07:32,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:07:32,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:07:32,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:07:32,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:07:30" (1/3) ... [2022-11-25 17:07:32,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64858e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:07:32, skipping insertion in model container [2022-11-25 17:07:32,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:31" (2/3) ... [2022-11-25 17:07:32,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64858e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:07:32, skipping insertion in model container [2022-11-25 17:07:32,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:07:32" (3/3) ... [2022-11-25 17:07:32,126 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_power.opt_pso.opt_rmo.opt.i [2022-11-25 17:07:32,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:07:32,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-25 17:07:32,146 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:07:32,206 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:07:32,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 101 transitions, 212 flow [2022-11-25 17:07:32,312 INFO L130 PetriNetUnfolder]: 2/99 cut-off events. [2022-11-25 17:07:32,312 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:07:32,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 99 events. 2/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2022-11-25 17:07:32,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 101 transitions, 212 flow [2022-11-25 17:07:32,327 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 99 transitions, 204 flow [2022-11-25 17:07:32,331 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:07:32,364 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 99 transitions, 204 flow [2022-11-25 17:07:32,367 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 99 transitions, 204 flow [2022-11-25 17:07:32,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 99 transitions, 204 flow [2022-11-25 17:07:32,408 INFO L130 PetriNetUnfolder]: 2/99 cut-off events. [2022-11-25 17:07:32,409 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:07:32,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 99 events. 2/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2022-11-25 17:07:32,411 INFO L119 LiptonReduction]: Number of co-enabled transitions 1258 [2022-11-25 17:07:37,640 INFO L134 LiptonReduction]: Checked pairs total: 3232 [2022-11-25 17:07:37,640 INFO L136 LiptonReduction]: Total number of compositions: 105 [2022-11-25 17:07:37,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:07:37,663 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;@5223b78e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:07:37,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-25 17:07:37,665 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 17:07:37,665 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:07:37,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:37,666 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:07:37,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash 457, now seen corresponding path program 1 times [2022-11-25 17:07:37,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:37,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070346852] [2022-11-25 17:07:37,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:37,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:37,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:37,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070346852] [2022-11-25 17:07:37,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070346852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:37,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:37,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:07:37,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445070316] [2022-11-25 17:07:37,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:37,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:07:37,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:07:37,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:07:37,841 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 206 [2022-11-25 17:07:37,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:37,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:37,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 206 [2022-11-25 17:07:37,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:38,038 INFO L130 PetriNetUnfolder]: 204/361 cut-off events. [2022-11-25 17:07:38,039 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:07:38,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 361 events. 204/361 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1478 event pairs, 204 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 718. Up to 354 conditions per place. [2022-11-25 17:07:38,047 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 17 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2022-11-25 17:07:38,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 78 flow [2022-11-25 17:07:38,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:07:38,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:07:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 202 transitions. [2022-11-25 17:07:38,070 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49029126213592233 [2022-11-25 17:07:38,071 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 202 transitions. [2022-11-25 17:07:38,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 202 transitions. [2022-11-25 17:07:38,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:38,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 202 transitions. [2022-11-25 17:07:38,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:38,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:38,091 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:38,093 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 54 flow. Second operand 2 states and 202 transitions. [2022-11-25 17:07:38,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 78 flow [2022-11-25 17:07:38,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:07:38,099 INFO L231 Difference]: Finished difference. Result has 25 places, 19 transitions, 42 flow [2022-11-25 17:07:38,101 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=25, PETRI_TRANSITIONS=19} [2022-11-25 17:07:38,105 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2022-11-25 17:07:38,105 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 19 transitions, 42 flow [2022-11-25 17:07:38,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:38,106 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:38,106 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:07:38,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:07:38,107 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:38,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:38,118 INFO L85 PathProgramCache]: Analyzing trace with hash 432939912, now seen corresponding path program 1 times [2022-11-25 17:07:38,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:38,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85383971] [2022-11-25 17:07:38,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:38,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:38,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:38,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:38,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85383971] [2022-11-25 17:07:38,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85383971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:38,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:38,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:07:38,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363502304] [2022-11-25 17:07:38,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:38,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:07:38,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:38,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:07:38,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:07:38,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 206 [2022-11-25 17:07:38,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:38,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:38,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 206 [2022-11-25 17:07:38,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:38,682 INFO L130 PetriNetUnfolder]: 159/310 cut-off events. [2022-11-25 17:07:38,683 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:07:38,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 310 events. 159/310 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1349 event pairs, 24 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 600. Up to 220 conditions per place. [2022-11-25 17:07:38,689 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 21 selfloop transitions, 2 changer transitions 2/27 dead transitions. [2022-11-25 17:07:38,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 27 transitions, 108 flow [2022-11-25 17:07:38,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:07:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:07:38,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2022-11-25 17:07:38,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4741100323624595 [2022-11-25 17:07:38,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2022-11-25 17:07:38,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2022-11-25 17:07:38,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:38,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2022-11-25 17:07:38,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:38,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:38,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:38,704 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 42 flow. Second operand 3 states and 293 transitions. [2022-11-25 17:07:38,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 27 transitions, 108 flow [2022-11-25 17:07:38,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:07:38,706 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 42 flow [2022-11-25 17:07:38,707 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2022-11-25 17:07:38,708 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, -4 predicate places. [2022-11-25 17:07:38,708 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 42 flow [2022-11-25 17:07:38,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:38,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:38,709 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:38,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:07:38,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:38,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:38,714 INFO L85 PathProgramCache]: Analyzing trace with hash -72607807, now seen corresponding path program 1 times [2022-11-25 17:07:38,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:38,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516970868] [2022-11-25 17:07:38,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:38,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:39,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:39,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:39,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516970868] [2022-11-25 17:07:39,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516970868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:39,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:39,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:07:39,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895777707] [2022-11-25 17:07:39,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:39,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:07:39,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:39,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:07:39,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:07:39,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 206 [2022-11-25 17:07:39,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 42 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:39,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:39,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 206 [2022-11-25 17:07:39,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:39,841 INFO L130 PetriNetUnfolder]: 241/444 cut-off events. [2022-11-25 17:07:39,842 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-25 17:07:39,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 444 events. 241/444 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1940 event pairs, 72 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 913. Up to 281 conditions per place. [2022-11-25 17:07:39,845 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 34 selfloop transitions, 16 changer transitions 0/51 dead transitions. [2022-11-25 17:07:39,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 51 transitions, 218 flow [2022-11-25 17:07:39,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:07:39,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:07:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 627 transitions. [2022-11-25 17:07:39,848 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4348127600554785 [2022-11-25 17:07:39,848 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 627 transitions. [2022-11-25 17:07:39,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 627 transitions. [2022-11-25 17:07:39,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:39,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 627 transitions. [2022-11-25 17:07:39,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.57142857142857) internal successors, (627), 7 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:39,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:39,855 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:39,855 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 42 flow. Second operand 7 states and 627 transitions. [2022-11-25 17:07:39,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 51 transitions, 218 flow [2022-11-25 17:07:39,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 51 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:07:39,858 INFO L231 Difference]: Finished difference. Result has 33 places, 32 transitions, 143 flow [2022-11-25 17:07:39,858 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=143, PETRI_PLACES=33, PETRI_TRANSITIONS=32} [2022-11-25 17:07:39,859 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2022-11-25 17:07:39,859 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 32 transitions, 143 flow [2022-11-25 17:07:39,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:39,860 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:39,860 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:39,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:07:39,860 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:39,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:39,861 INFO L85 PathProgramCache]: Analyzing trace with hash -72607761, now seen corresponding path program 1 times [2022-11-25 17:07:39,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:39,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653532935] [2022-11-25 17:07:39,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:39,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:40,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:40,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653532935] [2022-11-25 17:07:40,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653532935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:40,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:40,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:07:40,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845139798] [2022-11-25 17:07:40,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:40,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:07:40,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:40,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:07:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:07:40,337 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 206 [2022-11-25 17:07:40,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:40,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:40,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 206 [2022-11-25 17:07:40,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:40,452 INFO L130 PetriNetUnfolder]: 160/307 cut-off events. [2022-11-25 17:07:40,453 INFO L131 PetriNetUnfolder]: For 256/259 co-relation queries the response was YES. [2022-11-25 17:07:40,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 307 events. 160/307 cut-off events. For 256/259 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1289 event pairs, 51 based on Foata normal form. 44/351 useless extension candidates. Maximal degree in co-relation 928. Up to 278 conditions per place. [2022-11-25 17:07:40,455 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 20 selfloop transitions, 2 changer transitions 9/34 dead transitions. [2022-11-25 17:07:40,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 211 flow [2022-11-25 17:07:40,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:07:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:07:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2022-11-25 17:07:40,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4053398058252427 [2022-11-25 17:07:40,458 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 334 transitions. [2022-11-25 17:07:40,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 334 transitions. [2022-11-25 17:07:40,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:40,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 334 transitions. [2022-11-25 17:07:40,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:40,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:40,462 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:40,462 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 143 flow. Second operand 4 states and 334 transitions. [2022-11-25 17:07:40,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 211 flow [2022-11-25 17:07:40,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 211 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:07:40,468 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 94 flow [2022-11-25 17:07:40,468 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2022-11-25 17:07:40,470 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2022-11-25 17:07:40,470 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 94 flow [2022-11-25 17:07:40,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:40,470 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:40,471 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:40,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:07:40,471 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:40,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:40,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2134476838, now seen corresponding path program 1 times [2022-11-25 17:07:40,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:40,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155811121] [2022-11-25 17:07:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:40,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:41,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:41,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155811121] [2022-11-25 17:07:41,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155811121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:41,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:41,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:07:41,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104796806] [2022-11-25 17:07:41,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:41,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:07:41,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:41,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:07:41,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:07:41,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2022-11-25 17:07:41,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:41,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:41,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2022-11-25 17:07:41,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:41,337 INFO L130 PetriNetUnfolder]: 192/359 cut-off events. [2022-11-25 17:07:41,338 INFO L131 PetriNetUnfolder]: For 349/355 co-relation queries the response was YES. [2022-11-25 17:07:41,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 359 events. 192/359 cut-off events. For 349/355 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1419 event pairs, 74 based on Foata normal form. 24/383 useless extension candidates. Maximal degree in co-relation 1065. Up to 295 conditions per place. [2022-11-25 17:07:41,341 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 24 selfloop transitions, 3 changer transitions 11/40 dead transitions. [2022-11-25 17:07:41,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 230 flow [2022-11-25 17:07:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:07:41,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:07:41,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 468 transitions. [2022-11-25 17:07:41,343 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45436893203883494 [2022-11-25 17:07:41,343 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 468 transitions. [2022-11-25 17:07:41,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 468 transitions. [2022-11-25 17:07:41,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:41,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 468 transitions. [2022-11-25 17:07:41,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.6) internal successors, (468), 5 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:41,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:41,349 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:41,349 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 94 flow. Second operand 5 states and 468 transitions. [2022-11-25 17:07:41,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 230 flow [2022-11-25 17:07:41,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 222 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-25 17:07:41,352 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 114 flow [2022-11-25 17:07:41,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2022-11-25 17:07:41,353 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2022-11-25 17:07:41,354 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 114 flow [2022-11-25 17:07:41,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.8) internal successors, (444), 5 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:41,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:41,355 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:41,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:07:41,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:41,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:41,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1744351521, now seen corresponding path program 1 times [2022-11-25 17:07:41,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:41,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894694244] [2022-11-25 17:07:41,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:41,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:41,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:41,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:41,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894694244] [2022-11-25 17:07:41,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894694244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:41,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:41,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:07:41,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613705269] [2022-11-25 17:07:41,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:41,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:07:41,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:41,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:07:41,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:07:41,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2022-11-25 17:07:41,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:41,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:41,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2022-11-25 17:07:41,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:41,922 INFO L130 PetriNetUnfolder]: 190/357 cut-off events. [2022-11-25 17:07:41,922 INFO L131 PetriNetUnfolder]: For 424/426 co-relation queries the response was YES. [2022-11-25 17:07:41,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1194 conditions, 357 events. 190/357 cut-off events. For 424/426 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1411 event pairs, 24 based on Foata normal form. 16/373 useless extension candidates. Maximal degree in co-relation 1184. Up to 259 conditions per place. [2022-11-25 17:07:41,926 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 28 selfloop transitions, 7 changer transitions 10/47 dead transitions. [2022-11-25 17:07:41,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 307 flow [2022-11-25 17:07:41,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:07:41,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:07:41,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 561 transitions. [2022-11-25 17:07:41,928 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4538834951456311 [2022-11-25 17:07:41,929 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 561 transitions. [2022-11-25 17:07:41,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 561 transitions. [2022-11-25 17:07:41,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:41,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 561 transitions. [2022-11-25 17:07:41,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:41,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:41,934 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:41,934 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 114 flow. Second operand 6 states and 561 transitions. [2022-11-25 17:07:41,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 307 flow [2022-11-25 17:07:41,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 300 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-25 17:07:41,938 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 153 flow [2022-11-25 17:07:41,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2022-11-25 17:07:41,939 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2022-11-25 17:07:41,939 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 153 flow [2022-11-25 17:07:41,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:41,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:41,940 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:41,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:07:41,940 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:41,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:41,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1747119201, now seen corresponding path program 2 times [2022-11-25 17:07:41,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:41,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875513138] [2022-11-25 17:07:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:41,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:42,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:42,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875513138] [2022-11-25 17:07:42,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875513138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:42,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:42,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:07:42,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144470718] [2022-11-25 17:07:42,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:42,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:07:42,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:42,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:07:42,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:07:42,538 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2022-11-25 17:07:42,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:42,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:42,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2022-11-25 17:07:42,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:42,753 INFO L130 PetriNetUnfolder]: 186/349 cut-off events. [2022-11-25 17:07:42,753 INFO L131 PetriNetUnfolder]: For 686/690 co-relation queries the response was YES. [2022-11-25 17:07:42,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1291 conditions, 349 events. 186/349 cut-off events. For 686/690 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1362 event pairs, 32 based on Foata normal form. 18/367 useless extension candidates. Maximal degree in co-relation 1279. Up to 257 conditions per place. [2022-11-25 17:07:42,757 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 28 selfloop transitions, 8 changer transitions 11/49 dead transitions. [2022-11-25 17:07:42,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 366 flow [2022-11-25 17:07:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:07:42,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:07:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 642 transitions. [2022-11-25 17:07:42,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44521497919556174 [2022-11-25 17:07:42,760 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 642 transitions. [2022-11-25 17:07:42,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 642 transitions. [2022-11-25 17:07:42,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:42,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 642 transitions. [2022-11-25 17:07:42,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:42,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:42,766 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:42,766 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 153 flow. Second operand 7 states and 642 transitions. [2022-11-25 17:07:42,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 366 flow [2022-11-25 17:07:42,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 341 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-11-25 17:07:42,772 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 183 flow [2022-11-25 17:07:42,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=183, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2022-11-25 17:07:42,773 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2022-11-25 17:07:42,773 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 183 flow [2022-11-25 17:07:42,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:42,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:42,774 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:42,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:07:42,775 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:42,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:42,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1744299627, now seen corresponding path program 1 times [2022-11-25 17:07:42,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:42,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567314967] [2022-11-25 17:07:42,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:42,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:43,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:43,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567314967] [2022-11-25 17:07:43,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567314967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:43,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:43,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:07:43,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434029233] [2022-11-25 17:07:43,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:43,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:07:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:43,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:07:43,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:07:43,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 206 [2022-11-25 17:07:43,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:43,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:43,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 206 [2022-11-25 17:07:43,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:43,896 INFO L130 PetriNetUnfolder]: 219/394 cut-off events. [2022-11-25 17:07:43,896 INFO L131 PetriNetUnfolder]: For 1269/1269 co-relation queries the response was YES. [2022-11-25 17:07:43,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 394 events. 219/394 cut-off events. For 1269/1269 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1498 event pairs, 46 based on Foata normal form. 18/412 useless extension candidates. Maximal degree in co-relation 1555. Up to 282 conditions per place. [2022-11-25 17:07:43,900 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 30 selfloop transitions, 15 changer transitions 13/58 dead transitions. [2022-11-25 17:07:43,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 457 flow [2022-11-25 17:07:43,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:07:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:07:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 523 transitions. [2022-11-25 17:07:43,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4231391585760518 [2022-11-25 17:07:43,903 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 523 transitions. [2022-11-25 17:07:43,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 523 transitions. [2022-11-25 17:07:43,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:43,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 523 transitions. [2022-11-25 17:07:43,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.16666666666667) internal successors, (523), 6 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:43,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:43,908 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:43,908 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 183 flow. Second operand 6 states and 523 transitions. [2022-11-25 17:07:43,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 457 flow [2022-11-25 17:07:43,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 58 transitions, 424 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-25 17:07:43,914 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 269 flow [2022-11-25 17:07:43,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=269, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2022-11-25 17:07:43,915 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2022-11-25 17:07:43,916 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 269 flow [2022-11-25 17:07:43,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:43,916 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:43,916 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:43,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:07:43,917 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:43,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:43,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1745510487, now seen corresponding path program 2 times [2022-11-25 17:07:43,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:43,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186133291] [2022-11-25 17:07:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:43,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:44,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:44,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186133291] [2022-11-25 17:07:44,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186133291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:44,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:44,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:07:44,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919569127] [2022-11-25 17:07:44,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:44,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:07:44,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:44,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:07:44,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:07:44,452 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2022-11-25 17:07:44,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:44,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:44,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2022-11-25 17:07:44,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:44,683 INFO L130 PetriNetUnfolder]: 195/362 cut-off events. [2022-11-25 17:07:44,683 INFO L131 PetriNetUnfolder]: For 1447/1471 co-relation queries the response was YES. [2022-11-25 17:07:44,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 362 events. 195/362 cut-off events. For 1447/1471 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1444 event pairs, 48 based on Foata normal form. 32/394 useless extension candidates. Maximal degree in co-relation 1624. Up to 267 conditions per place. [2022-11-25 17:07:44,687 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 37 selfloop transitions, 6 changer transitions 13/60 dead transitions. [2022-11-25 17:07:44,687 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 60 transitions, 547 flow [2022-11-25 17:07:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:07:44,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:07:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 555 transitions. [2022-11-25 17:07:44,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44902912621359226 [2022-11-25 17:07:44,690 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 555 transitions. [2022-11-25 17:07:44,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 555 transitions. [2022-11-25 17:07:44,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:44,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 555 transitions. [2022-11-25 17:07:44,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.5) internal successors, (555), 6 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:44,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:44,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:44,697 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 269 flow. Second operand 6 states and 555 transitions. [2022-11-25 17:07:44,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 60 transitions, 547 flow [2022-11-25 17:07:44,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 536 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-11-25 17:07:44,705 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 315 flow [2022-11-25 17:07:44,705 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2022-11-25 17:07:44,706 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2022-11-25 17:07:44,706 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 315 flow [2022-11-25 17:07:44,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:44,709 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:44,710 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:44,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:07:44,711 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:44,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:44,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1759599675, now seen corresponding path program 1 times [2022-11-25 17:07:44,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:44,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178260270] [2022-11-25 17:07:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:44,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:45,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:45,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178260270] [2022-11-25 17:07:45,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178260270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:45,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:45,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:07:45,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96010873] [2022-11-25 17:07:45,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:45,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:07:45,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:45,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:07:45,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:07:45,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2022-11-25 17:07:45,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:45,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:45,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2022-11-25 17:07:45,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:45,433 INFO L130 PetriNetUnfolder]: 179/331 cut-off events. [2022-11-25 17:07:45,434 INFO L131 PetriNetUnfolder]: For 1468/1486 co-relation queries the response was YES. [2022-11-25 17:07:45,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1632 conditions, 331 events. 179/331 cut-off events. For 1468/1486 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1255 event pairs, 28 based on Foata normal form. 15/346 useless extension candidates. Maximal degree in co-relation 1615. Up to 253 conditions per place. [2022-11-25 17:07:45,437 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 32 selfloop transitions, 8 changer transitions 6/50 dead transitions. [2022-11-25 17:07:45,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 475 flow [2022-11-25 17:07:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:07:45,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:07:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 551 transitions. [2022-11-25 17:07:45,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4457928802588997 [2022-11-25 17:07:45,440 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 551 transitions. [2022-11-25 17:07:45,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 551 transitions. [2022-11-25 17:07:45,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:45,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 551 transitions. [2022-11-25 17:07:45,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:45,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:45,445 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:45,446 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 315 flow. Second operand 6 states and 551 transitions. [2022-11-25 17:07:45,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 475 flow [2022-11-25 17:07:45,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 453 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-25 17:07:45,453 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 324 flow [2022-11-25 17:07:45,454 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2022-11-25 17:07:45,454 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2022-11-25 17:07:45,455 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 324 flow [2022-11-25 17:07:45,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:45,455 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:45,455 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:45,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:07:45,456 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:45,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:45,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1759650608, now seen corresponding path program 1 times [2022-11-25 17:07:45,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:45,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960352317] [2022-11-25 17:07:45,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:45,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:45,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:45,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960352317] [2022-11-25 17:07:45,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960352317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:45,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:45,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:07:45,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420414528] [2022-11-25 17:07:45,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:45,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:07:45,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:07:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:07:45,902 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2022-11-25 17:07:45,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:45,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:45,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2022-11-25 17:07:45,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:46,190 INFO L130 PetriNetUnfolder]: 204/377 cut-off events. [2022-11-25 17:07:46,190 INFO L131 PetriNetUnfolder]: For 1973/1987 co-relation queries the response was YES. [2022-11-25 17:07:46,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 377 events. 204/377 cut-off events. For 1973/1987 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1504 event pairs, 77 based on Foata normal form. 26/403 useless extension candidates. Maximal degree in co-relation 1916. Up to 287 conditions per place. [2022-11-25 17:07:46,195 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 33 selfloop transitions, 20 changer transitions 10/67 dead transitions. [2022-11-25 17:07:46,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 67 transitions, 722 flow [2022-11-25 17:07:46,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:07:46,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:07:46,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 633 transitions. [2022-11-25 17:07:46,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4389736477115118 [2022-11-25 17:07:46,198 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 633 transitions. [2022-11-25 17:07:46,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 633 transitions. [2022-11-25 17:07:46,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:46,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 633 transitions. [2022-11-25 17:07:46,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.42857142857143) internal successors, (633), 7 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:46,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:46,203 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:46,204 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 324 flow. Second operand 7 states and 633 transitions. [2022-11-25 17:07:46,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 67 transitions, 722 flow [2022-11-25 17:07:46,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 692 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-11-25 17:07:46,213 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 513 flow [2022-11-25 17:07:46,214 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=513, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2022-11-25 17:07:46,214 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2022-11-25 17:07:46,214 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 513 flow [2022-11-25 17:07:46,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:46,215 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:46,215 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:46,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:07:46,216 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:46,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:46,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1673852528, now seen corresponding path program 2 times [2022-11-25 17:07:46,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:46,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177485772] [2022-11-25 17:07:46,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:46,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:46,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:46,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177485772] [2022-11-25 17:07:46,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177485772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:46,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:46,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:07:46,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15903317] [2022-11-25 17:07:46,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:46,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:07:46,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:46,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:07:46,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:07:46,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2022-11-25 17:07:46,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 513 flow. Second operand has 7 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:46,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:46,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2022-11-25 17:07:46,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:46,915 INFO L130 PetriNetUnfolder]: 198/370 cut-off events. [2022-11-25 17:07:46,916 INFO L131 PetriNetUnfolder]: For 2337/2363 co-relation queries the response was YES. [2022-11-25 17:07:46,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2082 conditions, 370 events. 198/370 cut-off events. For 2337/2363 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1483 event pairs, 77 based on Foata normal form. 40/410 useless extension candidates. Maximal degree in co-relation 2063. Up to 263 conditions per place. [2022-11-25 17:07:46,921 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 35 selfloop transitions, 19 changer transitions 12/70 dead transitions. [2022-11-25 17:07:46,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 847 flow [2022-11-25 17:07:46,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:07:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:07:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2022-11-25 17:07:46,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4401294498381877 [2022-11-25 17:07:46,924 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2022-11-25 17:07:46,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2022-11-25 17:07:46,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:46,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2022-11-25 17:07:46,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:46,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:46,930 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:46,930 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 513 flow. Second operand 6 states and 544 transitions. [2022-11-25 17:07:46,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 847 flow [2022-11-25 17:07:46,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 814 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-11-25 17:07:46,941 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 586 flow [2022-11-25 17:07:46,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=586, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2022-11-25 17:07:46,942 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2022-11-25 17:07:46,942 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 586 flow [2022-11-25 17:07:46,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:46,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:46,943 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:46,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:07:46,943 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:46,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:46,944 INFO L85 PathProgramCache]: Analyzing trace with hash 331232929, now seen corresponding path program 1 times [2022-11-25 17:07:46,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:46,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63920589] [2022-11-25 17:07:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:46,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:47,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:47,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63920589] [2022-11-25 17:07:47,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63920589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:47,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:47,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:07:47,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759916886] [2022-11-25 17:07:47,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:47,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:07:47,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:47,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:07:47,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:07:47,112 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 206 [2022-11-25 17:07:47,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:47,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:47,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 206 [2022-11-25 17:07:47,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:47,291 INFO L130 PetriNetUnfolder]: 233/449 cut-off events. [2022-11-25 17:07:47,292 INFO L131 PetriNetUnfolder]: For 3897/3931 co-relation queries the response was YES. [2022-11-25 17:07:47,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 449 events. 233/449 cut-off events. For 3897/3931 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1991 event pairs, 78 based on Foata normal form. 54/498 useless extension candidates. Maximal degree in co-relation 2672. Up to 226 conditions per place. [2022-11-25 17:07:47,296 INFO L137 encePairwiseOnDemand]: 202/206 looper letters, 40 selfloop transitions, 5 changer transitions 27/75 dead transitions. [2022-11-25 17:07:47,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 75 transitions, 989 flow [2022-11-25 17:07:47,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:07:47,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:07:47,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 464 transitions. [2022-11-25 17:07:47,298 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45048543689320386 [2022-11-25 17:07:47,299 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 464 transitions. [2022-11-25 17:07:47,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 464 transitions. [2022-11-25 17:07:47,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:47,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 464 transitions. [2022-11-25 17:07:47,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.8) internal successors, (464), 5 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:47,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:47,303 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:47,303 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 586 flow. Second operand 5 states and 464 transitions. [2022-11-25 17:07:47,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 75 transitions, 989 flow [2022-11-25 17:07:47,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 75 transitions, 932 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-25 17:07:47,315 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 459 flow [2022-11-25 17:07:47,316 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=459, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2022-11-25 17:07:47,316 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2022-11-25 17:07:47,316 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 459 flow [2022-11-25 17:07:47,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:47,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:47,317 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:47,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:07:47,318 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:47,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:47,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1287012012, now seen corresponding path program 1 times [2022-11-25 17:07:47,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:47,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139355191] [2022-11-25 17:07:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:47,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:47,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:47,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139355191] [2022-11-25 17:07:47,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139355191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:47,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:47,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:07:47,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532169296] [2022-11-25 17:07:47,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:47,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:07:47,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:47,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:07:47,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:07:47,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2022-11-25 17:07:47,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 459 flow. Second operand has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:47,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:47,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2022-11-25 17:07:47,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:48,322 INFO L130 PetriNetUnfolder]: 234/487 cut-off events. [2022-11-25 17:07:48,322 INFO L131 PetriNetUnfolder]: For 3418/3430 co-relation queries the response was YES. [2022-11-25 17:07:48,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 487 events. 234/487 cut-off events. For 3418/3430 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2378 event pairs, 54 based on Foata normal form. 18/501 useless extension candidates. Maximal degree in co-relation 2661. Up to 278 conditions per place. [2022-11-25 17:07:48,327 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 35 selfloop transitions, 11 changer transitions 16/65 dead transitions. [2022-11-25 17:07:48,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 65 transitions, 796 flow [2022-11-25 17:07:48,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:07:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:07:48,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 633 transitions. [2022-11-25 17:07:48,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4389736477115118 [2022-11-25 17:07:48,330 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 633 transitions. [2022-11-25 17:07:48,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 633 transitions. [2022-11-25 17:07:48,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:48,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 633 transitions. [2022-11-25 17:07:48,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.42857142857143) internal successors, (633), 7 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:48,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:48,336 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:48,336 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 459 flow. Second operand 7 states and 633 transitions. [2022-11-25 17:07:48,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 65 transitions, 796 flow [2022-11-25 17:07:48,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 65 transitions, 783 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-25 17:07:48,349 INFO L231 Difference]: Finished difference. Result has 63 places, 43 transitions, 527 flow [2022-11-25 17:07:48,349 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=527, PETRI_PLACES=63, PETRI_TRANSITIONS=43} [2022-11-25 17:07:48,350 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2022-11-25 17:07:48,350 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 43 transitions, 527 flow [2022-11-25 17:07:48,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:48,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:48,351 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:48,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:07:48,351 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:48,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:48,352 INFO L85 PathProgramCache]: Analyzing trace with hash 263310454, now seen corresponding path program 2 times [2022-11-25 17:07:48,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:48,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223281761] [2022-11-25 17:07:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:48,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:49,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:49,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223281761] [2022-11-25 17:07:49,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223281761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:49,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:49,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:07:49,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773284171] [2022-11-25 17:07:49,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:49,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:07:49,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:49,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:07:49,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:07:49,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2022-11-25 17:07:49,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 43 transitions, 527 flow. Second operand has 8 states, 8 states have (on average 86.5) internal successors, (692), 8 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:49,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:49,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2022-11-25 17:07:49,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:49,464 INFO L130 PetriNetUnfolder]: 196/423 cut-off events. [2022-11-25 17:07:49,464 INFO L131 PetriNetUnfolder]: For 4178/4195 co-relation queries the response was YES. [2022-11-25 17:07:49,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2517 conditions, 423 events. 196/423 cut-off events. For 4178/4195 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1983 event pairs, 68 based on Foata normal form. 16/439 useless extension candidates. Maximal degree in co-relation 2494. Up to 348 conditions per place. [2022-11-25 17:07:49,469 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 39 selfloop transitions, 5 changer transitions 11/58 dead transitions. [2022-11-25 17:07:49,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 777 flow [2022-11-25 17:07:49,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:07:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:07:49,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 544 transitions. [2022-11-25 17:07:49,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4401294498381877 [2022-11-25 17:07:49,472 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 544 transitions. [2022-11-25 17:07:49,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 544 transitions. [2022-11-25 17:07:49,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:49,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 544 transitions. [2022-11-25 17:07:49,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.66666666666667) internal successors, (544), 6 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:49,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:49,477 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:49,477 INFO L175 Difference]: Start difference. First operand has 63 places, 43 transitions, 527 flow. Second operand 6 states and 544 transitions. [2022-11-25 17:07:49,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 777 flow [2022-11-25 17:07:49,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 736 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-11-25 17:07:49,491 INFO L231 Difference]: Finished difference. Result has 61 places, 41 transitions, 497 flow [2022-11-25 17:07:49,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=497, PETRI_PLACES=61, PETRI_TRANSITIONS=41} [2022-11-25 17:07:49,492 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2022-11-25 17:07:49,492 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 497 flow [2022-11-25 17:07:49,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.5) internal successors, (692), 8 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:49,493 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:49,493 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:49,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:07:49,493 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:49,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:49,494 INFO L85 PathProgramCache]: Analyzing trace with hash 349742794, now seen corresponding path program 3 times [2022-11-25 17:07:49,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:49,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884509470] [2022-11-25 17:07:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:49,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:50,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:50,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884509470] [2022-11-25 17:07:50,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884509470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:50,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:50,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:07:50,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779524830] [2022-11-25 17:07:50,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:50,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:07:50,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:50,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:07:50,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:07:50,147 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2022-11-25 17:07:50,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 497 flow. Second operand has 8 states, 8 states have (on average 86.5) internal successors, (692), 8 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:50,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:50,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2022-11-25 17:07:50,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:50,378 INFO L130 PetriNetUnfolder]: 186/401 cut-off events. [2022-11-25 17:07:50,378 INFO L131 PetriNetUnfolder]: For 3596/3613 co-relation queries the response was YES. [2022-11-25 17:07:50,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2317 conditions, 401 events. 186/401 cut-off events. For 3596/3613 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1872 event pairs, 69 based on Foata normal form. 16/417 useless extension candidates. Maximal degree in co-relation 2295. Up to 347 conditions per place. [2022-11-25 17:07:50,382 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 35 selfloop transitions, 2 changer transitions 13/53 dead transitions. [2022-11-25 17:07:50,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 702 flow [2022-11-25 17:07:50,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:07:50,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:07:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 542 transitions. [2022-11-25 17:07:50,385 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43851132686084143 [2022-11-25 17:07:50,385 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 542 transitions. [2022-11-25 17:07:50,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 542 transitions. [2022-11-25 17:07:50,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:50,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 542 transitions. [2022-11-25 17:07:50,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:50,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:50,390 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:50,390 INFO L175 Difference]: Start difference. First operand has 61 places, 41 transitions, 497 flow. Second operand 6 states and 542 transitions. [2022-11-25 17:07:50,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 702 flow [2022-11-25 17:07:50,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 53 transitions, 649 flow, removed 21 selfloop flow, removed 5 redundant places. [2022-11-25 17:07:50,403 INFO L231 Difference]: Finished difference. Result has 62 places, 37 transitions, 412 flow [2022-11-25 17:07:50,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=412, PETRI_PLACES=62, PETRI_TRANSITIONS=37} [2022-11-25 17:07:50,404 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2022-11-25 17:07:50,404 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 37 transitions, 412 flow [2022-11-25 17:07:50,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 86.5) internal successors, (692), 8 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:50,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:50,405 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:50,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:07:50,405 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:50,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:50,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1237222602, now seen corresponding path program 4 times [2022-11-25 17:07:50,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:50,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498850654] [2022-11-25 17:07:50,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:50,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:50,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:50,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498850654] [2022-11-25 17:07:50,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498850654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:50,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:50,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:07:50,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834514285] [2022-11-25 17:07:50,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:50,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:07:50,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:50,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:07:50,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:07:50,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2022-11-25 17:07:50,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 37 transitions, 412 flow. Second operand has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:50,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:50,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2022-11-25 17:07:50,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:51,308 INFO L130 PetriNetUnfolder]: 172/376 cut-off events. [2022-11-25 17:07:51,309 INFO L131 PetriNetUnfolder]: For 2518/2532 co-relation queries the response was YES. [2022-11-25 17:07:51,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 376 events. 172/376 cut-off events. For 2518/2532 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1734 event pairs, 18 based on Foata normal form. 30/406 useless extension candidates. Maximal degree in co-relation 1966. Up to 133 conditions per place. [2022-11-25 17:07:51,312 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 27 selfloop transitions, 12 changer transitions 15/56 dead transitions. [2022-11-25 17:07:51,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 653 flow [2022-11-25 17:07:51,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:07:51,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:07:51,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 735 transitions. [2022-11-25 17:07:51,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44599514563106796 [2022-11-25 17:07:51,315 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 735 transitions. [2022-11-25 17:07:51,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 735 transitions. [2022-11-25 17:07:51,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:51,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 735 transitions. [2022-11-25 17:07:51,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 91.875) internal successors, (735), 8 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:51,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:51,321 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:51,321 INFO L175 Difference]: Start difference. First operand has 62 places, 37 transitions, 412 flow. Second operand 8 states and 735 transitions. [2022-11-25 17:07:51,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 653 flow [2022-11-25 17:07:51,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 56 transitions, 585 flow, removed 29 selfloop flow, removed 10 redundant places. [2022-11-25 17:07:51,332 INFO L231 Difference]: Finished difference. Result has 56 places, 30 transitions, 318 flow [2022-11-25 17:07:51,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=318, PETRI_PLACES=56, PETRI_TRANSITIONS=30} [2022-11-25 17:07:51,332 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2022-11-25 17:07:51,333 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 30 transitions, 318 flow [2022-11-25 17:07:51,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.71428571428571) internal successors, (621), 7 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:51,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:51,333 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:51,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:07:51,334 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:51,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:51,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1613371432, now seen corresponding path program 1 times [2022-11-25 17:07:51,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:51,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676750880] [2022-11-25 17:07:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:51,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:51,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:51,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:51,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676750880] [2022-11-25 17:07:51,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676750880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:51,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:51,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:07:51,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893305926] [2022-11-25 17:07:51,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:51,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:07:51,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:51,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:07:51,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:07:51,501 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2022-11-25 17:07:51,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 30 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:51,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:51,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2022-11-25 17:07:51,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:51,592 INFO L130 PetriNetUnfolder]: 49/136 cut-off events. [2022-11-25 17:07:51,592 INFO L131 PetriNetUnfolder]: For 909/912 co-relation queries the response was YES. [2022-11-25 17:07:51,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 708 conditions, 136 events. 49/136 cut-off events. For 909/912 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 506 event pairs, 11 based on Foata normal form. 26/162 useless extension candidates. Maximal degree in co-relation 688. Up to 63 conditions per place. [2022-11-25 17:07:51,594 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 28 selfloop transitions, 4 changer transitions 4/39 dead transitions. [2022-11-25 17:07:51,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 39 transitions, 456 flow [2022-11-25 17:07:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:07:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:07:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2022-11-25 17:07:51,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44538834951456313 [2022-11-25 17:07:51,598 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2022-11-25 17:07:51,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2022-11-25 17:07:51,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:51,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2022-11-25 17:07:51,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:51,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:51,604 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:51,604 INFO L175 Difference]: Start difference. First operand has 56 places, 30 transitions, 318 flow. Second operand 4 states and 367 transitions. [2022-11-25 17:07:51,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 39 transitions, 456 flow [2022-11-25 17:07:51,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 378 flow, removed 26 selfloop flow, removed 11 redundant places. [2022-11-25 17:07:51,609 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 227 flow [2022-11-25 17:07:51,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2022-11-25 17:07:51,610 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2022-11-25 17:07:51,610 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 227 flow [2022-11-25 17:07:51,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:51,610 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:51,611 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:51,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:07:51,611 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:51,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:51,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1375867201, now seen corresponding path program 1 times [2022-11-25 17:07:51,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:51,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282314048] [2022-11-25 17:07:51,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:51,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:07:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:07:51,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:07:51,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282314048] [2022-11-25 17:07:51,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282314048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:07:51,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:07:51,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:07:51,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033363323] [2022-11-25 17:07:51,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:07:51,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:07:51,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:07:51,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:07:51,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:07:51,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2022-11-25 17:07:51,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 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) [2022-11-25 17:07:51,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:07:51,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2022-11-25 17:07:51,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:07:51,866 INFO L130 PetriNetUnfolder]: 14/55 cut-off events. [2022-11-25 17:07:51,867 INFO L131 PetriNetUnfolder]: For 262/264 co-relation queries the response was YES. [2022-11-25 17:07:51,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 55 events. 14/55 cut-off events. For 262/264 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 138 event pairs, 0 based on Foata normal form. 12/67 useless extension candidates. Maximal degree in co-relation 270. Up to 24 conditions per place. [2022-11-25 17:07:51,868 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 14 selfloop transitions, 6 changer transitions 8/30 dead transitions. [2022-11-25 17:07:51,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 30 transitions, 312 flow [2022-11-25 17:07:51,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:07:51,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:07:51,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2022-11-25 17:07:51,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43398058252427185 [2022-11-25 17:07:51,870 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 447 transitions. [2022-11-25 17:07:51,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 447 transitions. [2022-11-25 17:07:51,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:07:51,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 447 transitions. [2022-11-25 17:07:51,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:51,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:51,874 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:07:51,874 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 227 flow. Second operand 5 states and 447 transitions. [2022-11-25 17:07:51,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 30 transitions, 312 flow [2022-11-25 17:07:51,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 30 transitions, 239 flow, removed 26 selfloop flow, removed 7 redundant places. [2022-11-25 17:07:51,877 INFO L231 Difference]: Finished difference. Result has 47 places, 20 transitions, 136 flow [2022-11-25 17:07:51,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=47, PETRI_TRANSITIONS=20} [2022-11-25 17:07:51,878 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2022-11-25 17:07:51,878 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 20 transitions, 136 flow [2022-11-25 17:07:51,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 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) [2022-11-25 17:07:51,878 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:07:51,879 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:51,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 17:07:51,879 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:07:51,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:07:51,880 INFO L85 PathProgramCache]: Analyzing trace with hash -407496782, now seen corresponding path program 1 times [2022-11-25 17:07:51,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:07:51,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727547553] [2022-11-25 17:07:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:07:51,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:07:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:07:51,936 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:07:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:07:52,017 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:07:52,017 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:07:52,018 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2022-11-25 17:07:52,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (8 of 10 remaining) [2022-11-25 17:07:52,020 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2022-11-25 17:07:52,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2022-11-25 17:07:52,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2022-11-25 17:07:52,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2022-11-25 17:07:52,021 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2022-11-25 17:07:52,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2022-11-25 17:07:52,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2022-11-25 17:07:52,022 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2022-11-25 17:07:52,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 17:07:52,022 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:07:52,030 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:07:52,030 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:07:52,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:07:52 BasicIcfg [2022-11-25 17:07:52,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:07:52,091 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:07:52,091 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:07:52,092 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:07:52,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:07:32" (3/4) ... [2022-11-25 17:07:52,095 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:07:52,095 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:07:52,096 INFO L158 Benchmark]: Toolchain (without parser) took 21643.27ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 138.9MB in the beginning and 124.3MB in the end (delta: 14.6MB). Peak memory consumption was 146.0MB. Max. memory is 16.1GB. [2022-11-25 17:07:52,096 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 134.2MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:07:52,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 676.72ms. Allocated memory is still 174.1MB. Free memory was 138.9MB in the beginning and 113.8MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-25 17:07:52,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.37ms. Allocated memory is still 174.1MB. Free memory was 113.8MB in the beginning and 111.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:07:52,097 INFO L158 Benchmark]: Boogie Preprocessor took 68.78ms. Allocated memory is still 174.1MB. Free memory was 111.1MB in the beginning and 109.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:07:52,097 INFO L158 Benchmark]: RCFGBuilder took 804.99ms. Allocated memory is still 174.1MB. Free memory was 109.0MB in the beginning and 140.2MB in the end (delta: -31.2MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2022-11-25 17:07:52,098 INFO L158 Benchmark]: TraceAbstraction took 19971.48ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 141.4MB in the beginning and 124.3MB in the end (delta: 17.1MB). Peak memory consumption was 146.2MB. Max. memory is 16.1GB. [2022-11-25 17:07:52,098 INFO L158 Benchmark]: Witness Printer took 3.82ms. Allocated memory is still 302.0MB. Free memory is still 124.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:07:52,099 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 134.2MB. Free memory is still 76.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 676.72ms. Allocated memory is still 174.1MB. Free memory was 138.9MB in the beginning and 113.8MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.37ms. Allocated memory is still 174.1MB. Free memory was 113.8MB in the beginning and 111.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.78ms. Allocated memory is still 174.1MB. Free memory was 111.1MB in the beginning and 109.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 804.99ms. Allocated memory is still 174.1MB. Free memory was 109.0MB in the beginning and 140.2MB in the end (delta: -31.2MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * TraceAbstraction took 19971.48ms. Allocated memory was 174.1MB in the beginning and 302.0MB in the end (delta: 127.9MB). Free memory was 141.4MB in the beginning and 124.3MB in the end (delta: 17.1MB). Peak memory consumption was 146.2MB. Max. memory is 16.1GB. * Witness Printer took 3.82ms. Allocated memory is still 302.0MB. Free memory is still 124.3MB. 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: 5.3s, 104 PlacesBefore, 30 PlacesAfterwards, 99 TransitionsBefore, 24 TransitionsAfterwards, 1258 CoEnabledTransitionPairs, 7 FixpointIterations, 47 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 105 TotalNumberOfCompositions, 3232 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1455, independent: 1332, independent conditional: 0, independent unconditional: 1332, dependent: 123, dependent conditional: 0, dependent unconditional: 123, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 881, independent: 841, independent conditional: 0, independent unconditional: 841, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 881, independent: 829, independent conditional: 0, independent unconditional: 829, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 410, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 389, dependent conditional: 0, dependent unconditional: 389, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1455, independent: 491, independent conditional: 0, independent unconditional: 491, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 881, unknown conditional: 0, unknown unconditional: 881] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 59, Positive conditional cache size: 0, Positive unconditional cache size: 59, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; [L712] 0 int x = 0; [L713] 0 _Bool x$flush_delayed; [L714] 0 int x$mem_tmp; [L715] 0 _Bool x$r_buff0_thd0; [L716] 0 _Bool x$r_buff0_thd1; [L717] 0 _Bool x$r_buff0_thd2; [L718] 0 _Bool x$r_buff1_thd0; [L719] 0 _Bool x$r_buff1_thd1; [L720] 0 _Bool x$r_buff1_thd2; [L721] 0 _Bool x$read_delayed; [L722] 0 int *x$read_delayed_var; [L723] 0 int x$w_buff0; [L724] 0 _Bool x$w_buff0_used; [L725] 0 int x$w_buff1; [L726] 0 _Bool x$w_buff1_used; [L728] 0 int y = 0; [L729] 0 _Bool weak$$choice0; [L730] 0 _Bool weak$$choice2; [L790] 0 pthread_t t2475; [L791] FCALL, FORK 0 pthread_create(&t2475, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2475, ((void *)0), P0, ((void *)0))=-1, t2475={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L792] 0 pthread_t t2476; [L793] FCALL, FORK 0 pthread_create(&t2476, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2476, ((void *)0), P1, ((void *)0))=0, t2475={5:0}, t2476={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L754] 2 x$w_buff1 = x$w_buff0 [L755] 2 x$w_buff0 = 2 [L756] 2 x$w_buff1_used = x$w_buff0_used [L757] 2 x$w_buff0_used = (_Bool)1 [L758] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L758] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L759] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L760] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L761] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L762] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L734] 1 y = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L737] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L768] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L769] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L770] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L771] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L772] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L740] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L741] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L742] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L743] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L744] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L749] 1 return 0; [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L797] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L797] RET 0 assume_abort_if_not(main$tmp_guard0) [L799] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L800] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L801] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L802] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L803] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\result={0:0}, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2475={5:0}, t2476={3:0}, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 x$flush_delayed = weak$$choice2 [L809] 0 x$mem_tmp = x [L810] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L811] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L812] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L813] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L814] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L816] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] 0 x = x$flush_delayed ? x$mem_tmp : x [L819] 0 x$flush_delayed = (_Bool)0 [L821] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, expression=1, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=49, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 791]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 119 locations, 10 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: 19.8s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 764 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 569 mSDsluCounter, 573 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 467 mSDsCounter, 253 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1893 IncrementalHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 253 mSolverCounterUnsat, 106 mSDtfsCounter, 1893 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=586occurred in iteration=12, InterpolantAutomatonStates: 106, 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 169 ConstructedInterpolants, 0 QuantifiedInterpolants, 2168 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 17:07:52,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R --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 9df54eb091d78e0f82ec179542e5b1e4fed45243a056538ca557e474796bb018 --- 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-38b53e6 [2022-11-25 17:07:54,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:07:54,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:07:54,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:07:54,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:07:54,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:07:54,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:07:54,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:07:54,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:07:54,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:07:54,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:07:54,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:07:54,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:07:54,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:07:54,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:07:54,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:07:54,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:07:54,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:07:54,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:07:54,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:07:54,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:07:54,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:07:54,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:07:54,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:07:54,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:07:54,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:07:54,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:07:54,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:07:54,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:07:54,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:07:54,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:07:54,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:07:54,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:07:54,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:07:54,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:07:54,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:07:54,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:07:54,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:07:54,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:07:54,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:07:54,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:07:54,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 17:07:54,707 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:07:54,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:07:54,708 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:07:54,709 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:07:54,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:07:54,710 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:07:54,710 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:07:54,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:07:54,711 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:07:54,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:07:54,712 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:07:54,713 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:07:54,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:07:54,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:07:54,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:07:54,713 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 17:07:54,714 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 17:07:54,714 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 17:07:54,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:07:54,714 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 17:07:54,714 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 17:07:54,715 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 17:07:54,715 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:07:54,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:07:54,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:07:54,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:07:54,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:07:54,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:07:54,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:07:54,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:07:54,717 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 17:07:54,717 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 17:07:54,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:07:54,717 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:07:54,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:07:54,718 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 17:07:54,718 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_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/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_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R 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 -> 9df54eb091d78e0f82ec179542e5b1e4fed45243a056538ca557e474796bb018 [2022-11-25 17:07:55,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:07:55,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:07:55,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:07:55,157 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:07:55,157 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:07:55,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2022-11-25 17:07:58,292 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:07:58,572 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:07:58,579 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2022-11-25 17:07:58,602 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/data/050d18c5a/9c35bf13991c4cf19c3e99f0372755af/FLAG5911c019d [2022-11-25 17:07:58,621 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/data/050d18c5a/9c35bf13991c4cf19c3e99f0372755af [2022-11-25 17:07:58,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:07:58,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:07:58,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:07:58,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:07:58,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:07:58,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:07:58" (1/1) ... [2022-11-25 17:07:58,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7deaa411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:58, skipping insertion in model container [2022-11-25 17:07:58,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:07:58" (1/1) ... [2022-11-25 17:07:58,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:07:58,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:07:58,890 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_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i[967,980] [2022-11-25 17:07:59,059 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,061 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,070 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,071 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,071 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,076 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,088 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,089 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,089 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,104 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,105 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,106 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,111 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,112 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:07:59,149 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:07:59,167 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_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/sv-benchmarks/c/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i[967,980] [2022-11-25 17:07:59,226 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,227 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,228 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,229 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,230 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,230 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,231 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,232 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,232 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,233 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,235 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,236 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,239 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,240 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,242 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:07:59,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:07:59,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:07:59,284 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:07:59,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:59 WrapperNode [2022-11-25 17:07:59,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:07:59,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:07:59,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:07:59,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:07:59,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:59" (1/1) ... [2022-11-25 17:07:59,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:59" (1/1) ... [2022-11-25 17:07:59,338 INFO L138 Inliner]: procedures = 178, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2022-11-25 17:07:59,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:07:59,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:07:59,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:07:59,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:07:59,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:59" (1/1) ... [2022-11-25 17:07:59,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:59" (1/1) ... [2022-11-25 17:07:59,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:59" (1/1) ... [2022-11-25 17:07:59,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:59" (1/1) ... [2022-11-25 17:07:59,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:59" (1/1) ... [2022-11-25 17:07:59,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:59" (1/1) ... [2022-11-25 17:07:59,382 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:59" (1/1) ... [2022-11-25 17:07:59,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:59" (1/1) ... [2022-11-25 17:07:59,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:07:59,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:07:59,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:07:59,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:07:59,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:59" (1/1) ... [2022-11-25 17:07:59,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:07:59,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:07:59,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:07:59,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:07:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:07:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:07:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:07:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:07:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 17:07:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 17:07:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-25 17:07:59,496 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-25 17:07:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-25 17:07:59,498 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-25 17:07:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:07:59,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:07:59,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:07:59,501 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:07:59,669 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:07:59,671 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:08:00,117 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:08:00,331 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:08:00,331 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 17:08:00,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:08:00 BoogieIcfgContainer [2022-11-25 17:08:00,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:08:00,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:08:00,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:08:00,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:08:00,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:07:58" (1/3) ... [2022-11-25 17:08:00,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f18b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:08:00, skipping insertion in model container [2022-11-25 17:08:00,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:07:59" (2/3) ... [2022-11-25 17:08:00,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45f18b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:08:00, skipping insertion in model container [2022-11-25 17:08:00,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:08:00" (3/3) ... [2022-11-25 17:08:00,346 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_power.opt_pso.opt_rmo.opt.i [2022-11-25 17:08:00,366 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:08:00,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-25 17:08:00,367 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:08:00,446 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:08:00,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 102 transitions, 214 flow [2022-11-25 17:08:00,565 INFO L130 PetriNetUnfolder]: 2/100 cut-off events. [2022-11-25 17:08:00,566 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:08:00,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 100 events. 2/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2022-11-25 17:08:00,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 102 transitions, 214 flow [2022-11-25 17:08:00,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 100 transitions, 206 flow [2022-11-25 17:08:00,581 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:08:00,610 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 100 transitions, 206 flow [2022-11-25 17:08:00,615 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 100 transitions, 206 flow [2022-11-25 17:08:00,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 100 transitions, 206 flow [2022-11-25 17:08:00,665 INFO L130 PetriNetUnfolder]: 2/100 cut-off events. [2022-11-25 17:08:00,666 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:08:00,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 100 events. 2/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2022-11-25 17:08:00,668 INFO L119 LiptonReduction]: Number of co-enabled transitions 1258 [2022-11-25 17:08:09,015 INFO L134 LiptonReduction]: Checked pairs total: 3275 [2022-11-25 17:08:09,016 INFO L136 LiptonReduction]: Total number of compositions: 104 [2022-11-25 17:08:09,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:08:09,038 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;@73914349, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:08:09,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-25 17:08:09,040 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-11-25 17:08:09,040 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:08:09,041 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:09,041 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 17:08:09,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:08:09,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash 460, now seen corresponding path program 1 times [2022-11-25 17:08:09,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:08:09,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899149217] [2022-11-25 17:08:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:08:09,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:09,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:08:09,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:08:09,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 17:08:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:08:09,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 17:08:09,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:09,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:08:09,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:08:09,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:08:09,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899149217] [2022-11-25 17:08:09,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899149217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:08:09,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:08:09,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 17:08:09,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866596745] [2022-11-25 17:08:09,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:08:09,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 17:08:09,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:08:09,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 17:08:09,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 17:08:09,193 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 206 [2022-11-25 17:08:09,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 91.5) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:09,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:08:09,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 206 [2022-11-25 17:08:09,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:08:09,379 INFO L130 PetriNetUnfolder]: 204/360 cut-off events. [2022-11-25 17:08:09,379 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:08:09,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 360 events. 204/360 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1478 event pairs, 204 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 717. Up to 354 conditions per place. [2022-11-25 17:08:09,384 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 17 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2022-11-25 17:08:09,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 78 flow [2022-11-25 17:08:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 17:08:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 17:08:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 204 transitions. [2022-11-25 17:08:09,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49514563106796117 [2022-11-25 17:08:09,400 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 204 transitions. [2022-11-25 17:08:09,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 204 transitions. [2022-11-25 17:08:09,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:08:09,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 204 transitions. [2022-11-25 17:08:09,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 102.0) internal successors, (204), 2 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:09,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:09,415 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:09,416 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 54 flow. Second operand 2 states and 204 transitions. [2022-11-25 17:08:09,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 78 flow [2022-11-25 17:08:09,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:08:09,421 INFO L231 Difference]: Finished difference. Result has 25 places, 19 transitions, 42 flow [2022-11-25 17:08:09,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=25, PETRI_TRANSITIONS=19} [2022-11-25 17:08:09,426 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2022-11-25 17:08:09,427 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 19 transitions, 42 flow [2022-11-25 17:08:09,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 91.5) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:09,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:09,428 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:08:09,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:08:09,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:09,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:08:09,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:09,640 INFO L85 PathProgramCache]: Analyzing trace with hash 433060032, now seen corresponding path program 1 times [2022-11-25 17:08:09,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:08:09,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535263972] [2022-11-25 17:08:09,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:08:09,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:09,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:08:09,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:08:09,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 17:08:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:08:09,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:08:09,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:09,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:08:09,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:08:09,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:08:09,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535263972] [2022-11-25 17:08:09,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535263972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:08:09,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:08:09,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:08:09,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540926067] [2022-11-25 17:08:09,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:08:09,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:08:09,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:08:09,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:08:09,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:08:09,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 206 [2022-11-25 17:08:09,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 19 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:09,831 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:08:09,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 206 [2022-11-25 17:08:09,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:08:10,037 INFO L130 PetriNetUnfolder]: 159/309 cut-off events. [2022-11-25 17:08:10,037 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:08:10,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 309 events. 159/309 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1319 event pairs, 24 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 599. Up to 220 conditions per place. [2022-11-25 17:08:10,046 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 21 selfloop transitions, 2 changer transitions 2/27 dead transitions. [2022-11-25 17:08:10,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 27 transitions, 108 flow [2022-11-25 17:08:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:08:10,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:08:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2022-11-25 17:08:10,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47896440129449835 [2022-11-25 17:08:10,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2022-11-25 17:08:10,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2022-11-25 17:08:10,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:08:10,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2022-11-25 17:08:10,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:10,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:10,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:10,070 INFO L175 Difference]: Start difference. First operand has 25 places, 19 transitions, 42 flow. Second operand 3 states and 296 transitions. [2022-11-25 17:08:10,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 27 transitions, 108 flow [2022-11-25 17:08:10,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:08:10,071 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 42 flow [2022-11-25 17:08:10,072 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2022-11-25 17:08:10,073 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, -4 predicate places. [2022-11-25 17:08:10,073 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 42 flow [2022-11-25 17:08:10,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:10,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:10,074 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:08:10,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:08:10,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:10,285 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:08:10,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:10,286 INFO L85 PathProgramCache]: Analyzing trace with hash -788485164, now seen corresponding path program 1 times [2022-11-25 17:08:10,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:08:10,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141702313] [2022-11-25 17:08:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:08:10,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:10,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:08:10,288 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:08:10,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 17:08:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:08:10,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:08:10,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:08:10,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:08:10,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:08:10,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141702313] [2022-11-25 17:08:10,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141702313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:08:10,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:08:10,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:08:10,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804800430] [2022-11-25 17:08:10,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:08:10,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:08:10,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:08:10,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:08:10,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:08:10,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 206 [2022-11-25 17:08:10,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:10,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:08:10,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 206 [2022-11-25 17:08:10,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:08:10,623 INFO L130 PetriNetUnfolder]: 62/142 cut-off events. [2022-11-25 17:08:10,624 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-25 17:08:10,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 142 events. 62/142 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 500 event pairs, 13 based on Foata normal form. 16/150 useless extension candidates. Maximal degree in co-relation 304. Up to 82 conditions per place. [2022-11-25 17:08:10,625 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 20 selfloop transitions, 3 changer transitions 13/38 dead transitions. [2022-11-25 17:08:10,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 38 transitions, 164 flow [2022-11-25 17:08:10,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:08:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:08:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2022-11-25 17:08:10,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4446601941747573 [2022-11-25 17:08:10,633 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 458 transitions. [2022-11-25 17:08:10,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 458 transitions. [2022-11-25 17:08:10,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:08:10,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 458 transitions. [2022-11-25 17:08:10,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:10,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:10,642 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:10,643 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 42 flow. Second operand 5 states and 458 transitions. [2022-11-25 17:08:10,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 38 transitions, 164 flow [2022-11-25 17:08:10,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 38 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:08:10,645 INFO L231 Difference]: Finished difference. Result has 30 places, 19 transitions, 65 flow [2022-11-25 17:08:10,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=65, PETRI_PLACES=30, PETRI_TRANSITIONS=19} [2022-11-25 17:08:10,648 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2022-11-25 17:08:10,649 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 65 flow [2022-11-25 17:08:10,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:10,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:10,650 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:08:10,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:08:10,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:10,866 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:08:10,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:10,867 INFO L85 PathProgramCache]: Analyzing trace with hash 446994559, now seen corresponding path program 1 times [2022-11-25 17:08:10,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:08:10,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445085078] [2022-11-25 17:08:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:08:10,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:10,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:08:10,869 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:08:10,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 17:08:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:08:11,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:08:11,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:08:11,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:08:11,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:08:11,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445085078] [2022-11-25 17:08:11,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445085078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:08:11,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:08:11,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:08:11,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091780517] [2022-11-25 17:08:11,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:08:11,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:08:11,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:08:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:08:11,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:08:11,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 206 [2022-11-25 17:08:11,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:11,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:08:11,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 206 [2022-11-25 17:08:11,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:08:11,268 INFO L130 PetriNetUnfolder]: 20/61 cut-off events. [2022-11-25 17:08:11,268 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-25 17:08:11,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 61 events. 20/61 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 144 event pairs, 8 based on Foata normal form. 7/66 useless extension candidates. Maximal degree in co-relation 162. Up to 24 conditions per place. [2022-11-25 17:08:11,269 INFO L137 encePairwiseOnDemand]: 201/206 looper letters, 18 selfloop transitions, 5 changer transitions 7/32 dead transitions. [2022-11-25 17:08:11,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 163 flow [2022-11-25 17:08:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:08:11,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:08:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 536 transitions. [2022-11-25 17:08:11,272 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4336569579288026 [2022-11-25 17:08:11,272 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 536 transitions. [2022-11-25 17:08:11,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 536 transitions. [2022-11-25 17:08:11,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:08:11,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 536 transitions. [2022-11-25 17:08:11,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:11,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:11,277 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:11,277 INFO L175 Difference]: Start difference. First operand has 30 places, 19 transitions, 65 flow. Second operand 6 states and 536 transitions. [2022-11-25 17:08:11,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 163 flow [2022-11-25 17:08:11,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 150 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-25 17:08:11,279 INFO L231 Difference]: Finished difference. Result has 34 places, 19 transitions, 76 flow [2022-11-25 17:08:11,280 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=34, PETRI_TRANSITIONS=19} [2022-11-25 17:08:11,280 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2022-11-25 17:08:11,281 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 19 transitions, 76 flow [2022-11-25 17:08:11,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:11,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:11,281 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:08:11,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:08:11,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:11,497 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:08:11,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:11,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1722142183, now seen corresponding path program 1 times [2022-11-25 17:08:11,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:08:11,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152797161] [2022-11-25 17:08:11,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:08:11,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:11,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:08:11,500 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:08:11,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 17:08:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:08:11,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 17:08:11,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:08:11,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:08:11,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:08:11,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152797161] [2022-11-25 17:08:11,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152797161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:08:11,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:08:11,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:08:11,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307033361] [2022-11-25 17:08:11,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:08:11,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:08:11,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:08:11,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:08:11,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:08:12,001 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 206 [2022-11-25 17:08:12,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 19 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:12,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:08:12,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 206 [2022-11-25 17:08:12,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:08:12,114 INFO L130 PetriNetUnfolder]: 21/72 cut-off events. [2022-11-25 17:08:12,114 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-11-25 17:08:12,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 72 events. 21/72 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 194 event pairs, 9 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 200. Up to 47 conditions per place. [2022-11-25 17:08:12,115 INFO L137 encePairwiseOnDemand]: 202/206 looper letters, 26 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2022-11-25 17:08:12,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 186 flow [2022-11-25 17:08:12,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:08:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:08:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2022-11-25 17:08:12,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4538834951456311 [2022-11-25 17:08:12,121 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2022-11-25 17:08:12,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2022-11-25 17:08:12,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:08:12,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2022-11-25 17:08:12,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:12,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:12,125 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:12,125 INFO L175 Difference]: Start difference. First operand has 34 places, 19 transitions, 76 flow. Second operand 4 states and 374 transitions. [2022-11-25 17:08:12,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 186 flow [2022-11-25 17:08:12,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 156 flow, removed 10 selfloop flow, removed 5 redundant places. [2022-11-25 17:08:12,130 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 80 flow [2022-11-25 17:08:12,130 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2022-11-25 17:08:12,132 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2022-11-25 17:08:12,132 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 80 flow [2022-11-25 17:08:12,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:12,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:12,134 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:08:12,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:08:12,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:12,339 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:08:12,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:12,339 INFO L85 PathProgramCache]: Analyzing trace with hash -285660638, now seen corresponding path program 1 times [2022-11-25 17:08:12,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:08:12,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694192944] [2022-11-25 17:08:12,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:08:12,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:12,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:08:12,341 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:08:12,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-25 17:08:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:08:12,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 17:08:12,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:08:12,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:08:12,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:08:12,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694192944] [2022-11-25 17:08:12,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694192944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:08:12,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:08:12,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:08:12,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399394835] [2022-11-25 17:08:12,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:08:12,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:08:12,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:08:12,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:08:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:08:12,795 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 206 [2022-11-25 17:08:12,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:12,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:08:12,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 206 [2022-11-25 17:08:12,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:08:12,899 INFO L130 PetriNetUnfolder]: 19/67 cut-off events. [2022-11-25 17:08:12,899 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-25 17:08:12,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 67 events. 19/67 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 191 event pairs, 5 based on Foata normal form. 2/69 useless extension candidates. Maximal degree in co-relation 188. Up to 55 conditions per place. [2022-11-25 17:08:12,899 INFO L137 encePairwiseOnDemand]: 203/206 looper letters, 14 selfloop transitions, 2 changer transitions 5/23 dead transitions. [2022-11-25 17:08:12,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 23 transitions, 132 flow [2022-11-25 17:08:12,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:08:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:08:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2022-11-25 17:08:12,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4053398058252427 [2022-11-25 17:08:12,903 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 334 transitions. [2022-11-25 17:08:12,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 334 transitions. [2022-11-25 17:08:12,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:08:12,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 334 transitions. [2022-11-25 17:08:12,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:12,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:12,908 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:12,908 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 80 flow. Second operand 4 states and 334 transitions. [2022-11-25 17:08:12,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 23 transitions, 132 flow [2022-11-25 17:08:12,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 23 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:08:12,911 INFO L231 Difference]: Finished difference. Result has 33 places, 18 transitions, 70 flow [2022-11-25 17:08:12,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=18} [2022-11-25 17:08:12,913 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2022-11-25 17:08:12,913 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 18 transitions, 70 flow [2022-11-25 17:08:12,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:12,914 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:12,914 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:08:12,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:08:13,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:13,115 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:08:13,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:13,116 INFO L85 PathProgramCache]: Analyzing trace with hash 373358999, now seen corresponding path program 2 times [2022-11-25 17:08:13,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:08:13,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073212081] [2022-11-25 17:08:13,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:08:13,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:13,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:08:13,118 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:08:13,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-25 17:08:13,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:08:13,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:08:13,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 17:08:13,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:08:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:08:13,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:08:13,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 17:08:13,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073212081] [2022-11-25 17:08:13,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073212081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:08:13,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:08:13,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:08:13,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347919671] [2022-11-25 17:08:13,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:08:13,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:08:13,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 17:08:13,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:08:13,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:08:13,647 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 206 [2022-11-25 17:08:13,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 18 transitions, 70 flow. Second operand has 9 states, 9 states have (on average 86.66666666666667) internal successors, (780), 9 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:13,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:08:13,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 206 [2022-11-25 17:08:13,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:08:13,832 INFO L130 PetriNetUnfolder]: 9/42 cut-off events. [2022-11-25 17:08:13,832 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-25 17:08:13,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 42 events. 9/42 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 1/43 useless extension candidates. Maximal degree in co-relation 123. Up to 24 conditions per place. [2022-11-25 17:08:13,833 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 15 selfloop transitions, 4 changer transitions 11/31 dead transitions. [2022-11-25 17:08:13,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 31 transitions, 180 flow [2022-11-25 17:08:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:08:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:08:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 622 transitions. [2022-11-25 17:08:13,836 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43134535367545074 [2022-11-25 17:08:13,836 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 622 transitions. [2022-11-25 17:08:13,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 622 transitions. [2022-11-25 17:08:13,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:08:13,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 622 transitions. [2022-11-25 17:08:13,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.85714285714286) internal successors, (622), 7 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:13,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:13,842 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:13,842 INFO L175 Difference]: Start difference. First operand has 33 places, 18 transitions, 70 flow. Second operand 7 states and 622 transitions. [2022-11-25 17:08:13,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 31 transitions, 180 flow [2022-11-25 17:08:13,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 165 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-25 17:08:13,847 INFO L231 Difference]: Finished difference. Result has 35 places, 18 transitions, 71 flow [2022-11-25 17:08:13,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=71, PETRI_PLACES=35, PETRI_TRANSITIONS=18} [2022-11-25 17:08:13,848 INFO L288 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2022-11-25 17:08:13,849 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 18 transitions, 71 flow [2022-11-25 17:08:13,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 86.66666666666667) internal successors, (780), 9 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:08:13,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:08:13,850 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:08:13,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:08:14,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:14,062 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-11-25 17:08:14,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:08:14,063 INFO L85 PathProgramCache]: Analyzing trace with hash -919438269, now seen corresponding path program 3 times [2022-11-25 17:08:14,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 17:08:14,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482603646] [2022-11-25 17:08:14,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:08:14,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:14,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 17:08:14,065 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 17:08:14,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 17:08:14,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 17:08:14,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-25 17:08:14,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:08:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:08:14,281 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-25 17:08:14,282 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:08:14,283 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2022-11-25 17:08:14,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (8 of 10 remaining) [2022-11-25 17:08:14,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2022-11-25 17:08:14,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2022-11-25 17:08:14,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2022-11-25 17:08:14,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2022-11-25 17:08:14,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2022-11-25 17:08:14,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2022-11-25 17:08:14,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2022-11-25 17:08:14,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2022-11-25 17:08:14,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-25 17:08:14,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 17:08:14,487 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-11-25 17:08:14,492 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:08:14,492 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:08:14,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:08:14 BasicIcfg [2022-11-25 17:08:14,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:08:14,538 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:08:14,538 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:08:14,538 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:08:14,539 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:08:00" (3/4) ... [2022-11-25 17:08:14,542 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 17:08:14,542 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:08:14,543 INFO L158 Benchmark]: Toolchain (without parser) took 15915.05ms. Allocated memory was 73.4MB in the beginning and 148.9MB in the end (delta: 75.5MB). Free memory was 47.2MB in the beginning and 91.3MB in the end (delta: -44.1MB). Peak memory consumption was 33.0MB. Max. memory is 16.1GB. [2022-11-25 17:08:14,543 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 73.4MB. Free memory was 51.8MB in the beginning and 51.7MB in the end (delta: 60.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:08:14,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 654.22ms. Allocated memory is still 73.4MB. Free memory was 47.0MB in the beginning and 44.1MB in the end (delta: 3.0MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. [2022-11-25 17:08:14,544 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.00ms. Allocated memory is still 73.4MB. Free memory was 44.1MB in the beginning and 41.4MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:08:14,544 INFO L158 Benchmark]: Boogie Preprocessor took 48.41ms. Allocated memory is still 73.4MB. Free memory was 41.4MB in the beginning and 39.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:08:14,545 INFO L158 Benchmark]: RCFGBuilder took 945.61ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 39.3MB in the beginning and 50.7MB in the end (delta: -11.3MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2022-11-25 17:08:14,545 INFO L158 Benchmark]: TraceAbstraction took 14200.40ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 50.2MB in the beginning and 91.3MB in the end (delta: -41.1MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-11-25 17:08:14,545 INFO L158 Benchmark]: Witness Printer took 3.86ms. Allocated memory is still 148.9MB. Free memory was 91.3MB in the beginning and 91.3MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:08:14,552 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 73.4MB. Free memory was 51.8MB in the beginning and 51.7MB in the end (delta: 60.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 654.22ms. Allocated memory is still 73.4MB. Free memory was 47.0MB in the beginning and 44.1MB in the end (delta: 3.0MB). Peak memory consumption was 21.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.00ms. Allocated memory is still 73.4MB. Free memory was 44.1MB in the beginning and 41.4MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.41ms. Allocated memory is still 73.4MB. Free memory was 41.4MB in the beginning and 39.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 945.61ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 39.3MB in the beginning and 50.7MB in the end (delta: -11.3MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * TraceAbstraction took 14200.40ms. Allocated memory was 102.8MB in the beginning and 148.9MB in the end (delta: 46.1MB). Free memory was 50.2MB in the beginning and 91.3MB in the end (delta: -41.1MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Witness Printer took 3.86ms. Allocated memory is still 148.9MB. Free memory was 91.3MB in the beginning and 91.3MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.4s, 105 PlacesBefore, 30 PlacesAfterwards, 100 TransitionsBefore, 24 TransitionsAfterwards, 1258 CoEnabledTransitionPairs, 7 FixpointIterations, 46 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 104 TotalNumberOfCompositions, 3275 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1518, independent: 1392, independent conditional: 0, independent unconditional: 1392, dependent: 126, dependent conditional: 0, dependent unconditional: 126, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 915, independent: 873, independent conditional: 0, independent unconditional: 873, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 915, independent: 861, independent conditional: 0, independent unconditional: 861, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 54, independent: 12, independent conditional: 0, independent unconditional: 12, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 407, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 389, dependent conditional: 0, dependent unconditional: 389, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1518, independent: 519, independent conditional: 0, independent unconditional: 519, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 915, unknown conditional: 0, unknown unconditional: 915] , Statistics on independence cache: Total cache size (in pairs): 84, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 18. Possible FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; [L712] 0 int x = 0; [L713] 0 _Bool x$flush_delayed; [L714] 0 int x$mem_tmp; [L715] 0 _Bool x$r_buff0_thd0; [L716] 0 _Bool x$r_buff0_thd1; [L717] 0 _Bool x$r_buff0_thd2; [L718] 0 _Bool x$r_buff1_thd0; [L719] 0 _Bool x$r_buff1_thd1; [L720] 0 _Bool x$r_buff1_thd2; [L721] 0 _Bool x$read_delayed; [L722] 0 int *x$read_delayed_var; [L723] 0 int x$w_buff0; [L724] 0 _Bool x$w_buff0_used; [L725] 0 int x$w_buff1; [L726] 0 _Bool x$w_buff1_used; [L728] 0 int y = 0; [L729] 0 _Bool weak$$choice0; [L730] 0 _Bool weak$$choice2; [L790] 0 pthread_t t2475; [L791] FCALL, FORK 0 pthread_create(&t2475, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2475, ((void *)0), P0, ((void *)0))=0, t2475={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L792] 0 pthread_t t2476; [L793] FCALL, FORK 0 pthread_create(&t2476, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2476, ((void *)0), P1, ((void *)0))=1, t2475={3:0}, t2476={7:0}, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=0] [L754] 2 x$w_buff1 = x$w_buff0 [L755] 2 x$w_buff0 = 2 [L756] 2 x$w_buff1_used = x$w_buff0_used [L757] 2 x$w_buff0_used = (_Bool)1 [L758] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L758] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L759] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L760] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L761] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L762] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=0] [L765] 2 y = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=1] [L734] 1 y = 2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L737] 1 x = 1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L740] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L741] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L742] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L743] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L744] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, y=2] [L768] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L769] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L770] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L771] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L772] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L775] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L777] 2 return 0; [L747] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L749] 1 return 0; [L795] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L797] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L797] RET 0 assume_abort_if_not(main$tmp_guard0) [L799] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L800] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L801] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L802] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L803] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\result={0:0}, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2475={3:0}, t2476={7:0}, weak$$choice0=0, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] [L806] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L807] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L808] 0 x$flush_delayed = weak$$choice2 [L809] 0 x$mem_tmp = x [L810] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L811] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L812] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L813] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L814] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L815] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L816] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 main$tmp_guard1 = !(x == 2 && y == 2) [L818] 0 x = x$flush_delayed ? x$mem_tmp : x [L819] 0 x$flush_delayed = (_Bool)0 [L821] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=1, \old(expression)=0, \result={0:0}, __unbuffered_cnt=2, arg={0:0}, arg={0:0}, expression=0, expression=1, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=2, weak$$choice2=0, x=2, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 791]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 120 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 207 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 132 mSDsluCounter, 109 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 521 IncrementalHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 25 mSDtfsCounter, 521 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=5, InterpolantAutomatonStates: 31, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 67 ConstructedInterpolants, 10 QuantifiedInterpolants, 596 SizeOfPredicates, 9 NumberOfNonLiveVariables, 671 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 17:08:14,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49e4dd91-2099-41b7-85d1-e3bd366ac0a2/bin/uautomizer-ZsLfNo2U6R/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: UNKNOWN: Overapproximated counterexample