./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 15:36:49,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:36:49,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:36:49,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:36:49,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:36:49,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:36:49,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:36:49,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:36:49,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:36:49,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:36:49,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:36:49,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:36:49,149 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:36:49,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:36:49,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:36:49,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:36:49,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:36:49,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:36:49,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:36:49,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:36:49,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:36:49,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:36:49,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:36:49,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:36:49,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:36:49,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:36:49,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:36:49,162 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:36:49,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:36:49,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:36:49,163 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:36:49,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:36:49,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:36:49,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:36:49,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:36:49,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:36:49,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:36:49,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:36:49,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:36:49,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:36:49,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:36:49,168 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 15:36:49,184 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:36:49,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:36:49,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:36:49,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:36:49,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:36:49,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:36:49,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:36:49,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:36:49,186 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:36:49,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:36:49,186 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:36:49,186 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:36:49,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:36:49,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:36:49,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:36:49,187 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 15:36:49,187 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 15:36:49,187 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 15:36:49,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:36:49,187 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 15:36:49,187 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:36:49,187 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:36:49,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:36:49,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:36:49,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:36:49,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:36:49,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:36:49,188 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:36:49,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:36:49,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:36:49,188 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:36:49,188 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:36:49,189 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:36:49,189 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:36:49,189 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_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48e6a57243e80a87d178da358ff4ad1dd63b86003507ef0dec3764d15038130a [2022-12-13 15:36:49,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:36:49,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:36:49,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:36:49,376 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:36:49,376 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:36:49,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-12-13 15:36:52,049 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:36:52,307 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:36:52,308 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/sv-benchmarks/c/pthread-wmm/rfi002_tso.i [2022-12-13 15:36:52,320 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/data/7b412aebe/1577230060b64035a1e712e0e1d1e920/FLAG94078f8d8 [2022-12-13 15:36:52,334 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/data/7b412aebe/1577230060b64035a1e712e0e1d1e920 [2022-12-13 15:36:52,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:36:52,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:36:52,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:36:52,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:36:52,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:36:52,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:36:52" (1/1) ... [2022-12-13 15:36:52,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b8eea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52, skipping insertion in model container [2022-12-13 15:36:52,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:36:52" (1/1) ... [2022-12-13 15:36:52,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:36:52,381 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:36:52,493 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_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/sv-benchmarks/c/pthread-wmm/rfi002_tso.i[987,1000] [2022-12-13 15:36:52,589 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,590 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,592 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,598 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,600 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,603 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,615 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,615 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,619 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,619 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,619 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,624 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,627 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,628 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,633 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:36:52,641 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:36:52,650 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_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/sv-benchmarks/c/pthread-wmm/rfi002_tso.i[987,1000] [2022-12-13 15:36:52,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,665 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,667 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,671 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,672 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,673 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,673 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,673 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,674 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,674 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,681 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,683 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,686 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,688 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 15:36:52,691 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 15:36:52,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:36:52,728 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:36:52,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52 WrapperNode [2022-12-13 15:36:52,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:36:52,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:36:52,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:36:52,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:36:52,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52" (1/1) ... [2022-12-13 15:36:52,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52" (1/1) ... [2022-12-13 15:36:52,771 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 203 [2022-12-13 15:36:52,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:36:52,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:36:52,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:36:52,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:36:52,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52" (1/1) ... [2022-12-13 15:36:52,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52" (1/1) ... [2022-12-13 15:36:52,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52" (1/1) ... [2022-12-13 15:36:52,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52" (1/1) ... [2022-12-13 15:36:52,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52" (1/1) ... [2022-12-13 15:36:52,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52" (1/1) ... [2022-12-13 15:36:52,793 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52" (1/1) ... [2022-12-13 15:36:52,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52" (1/1) ... [2022-12-13 15:36:52,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:36:52,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:36:52,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:36:52,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:36:52,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52" (1/1) ... [2022-12-13 15:36:52,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:36:52,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:36:52,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:36:52,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:36:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:36:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 15:36:52,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:36:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:36:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:36:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 15:36:52,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 15:36:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 15:36:52,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 15:36:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:36:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 15:36:52,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:36:52,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:36:52,858 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 15:36:52,964 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:36:52,965 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:36:53,288 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:36:53,435 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:36:53,435 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 15:36:53,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:36:53 BoogieIcfgContainer [2022-12-13 15:36:53,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:36:53,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:36:53,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:36:53,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:36:53,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:36:52" (1/3) ... [2022-12-13 15:36:53,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198f1852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:36:53, skipping insertion in model container [2022-12-13 15:36:53,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:36:52" (2/3) ... [2022-12-13 15:36:53,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198f1852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:36:53, skipping insertion in model container [2022-12-13 15:36:53,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:36:53" (3/3) ... [2022-12-13 15:36:53,443 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2022-12-13 15:36:53,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:36:53,457 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-13 15:36:53,458 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:36:53,495 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 15:36:53,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 122 transitions, 254 flow [2022-12-13 15:36:53,554 INFO L130 PetriNetUnfolder]: 2/120 cut-off events. [2022-12-13 15:36:53,554 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:36:53,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 120 events. 2/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-13 15:36:53,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 122 transitions, 254 flow [2022-12-13 15:36:53,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 120 transitions, 246 flow [2022-12-13 15:36:53,564 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:36:53,572 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 120 transitions, 246 flow [2022-12-13 15:36:53,574 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 120 transitions, 246 flow [2022-12-13 15:36:53,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 120 transitions, 246 flow [2022-12-13 15:36:53,592 INFO L130 PetriNetUnfolder]: 2/120 cut-off events. [2022-12-13 15:36:53,593 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:36:53,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 120 events. 2/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-12-13 15:36:53,594 INFO L119 LiptonReduction]: Number of co-enabled transitions 1612 [2022-12-13 15:36:58,389 INFO L134 LiptonReduction]: Checked pairs total: 4829 [2022-12-13 15:36:58,389 INFO L136 LiptonReduction]: Total number of compositions: 123 [2022-12-13 15:36:58,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:36:58,403 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;@4c695d46, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:36:58,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-13 15:36:58,405 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 15:36:58,405 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:36:58,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:36:58,405 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 15:36:58,406 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:36:58,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:36:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash 679, now seen corresponding path program 1 times [2022-12-13 15:36:58,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:36:58,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227197723] [2022-12-13 15:36:58,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:58,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:36:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:36:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:36:58,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:36:58,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227197723] [2022-12-13 15:36:58,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227197723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:36:58,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:36:58,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 15:36:58,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751951686] [2022-12-13 15:36:58,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:36:58,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:36:58,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:58,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:36:58,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:36:58,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 245 [2022-12-13 15:36:58,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 58 flow. Second operand has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:58,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:36:58,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 245 [2022-12-13 15:36:58,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:36:58,731 INFO L130 PetriNetUnfolder]: 515/852 cut-off events. [2022-12-13 15:36:58,731 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 15:36:58,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1722 conditions, 852 events. 515/852 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3488 event pairs, 515 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 1712. Up to 853 conditions per place. [2022-12-13 15:36:58,736 INFO L137 encePairwiseOnDemand]: 241/245 looper letters, 22 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2022-12-13 15:36:58,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 94 flow [2022-12-13 15:36:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:36:58,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 15:36:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 236 transitions. [2022-12-13 15:36:58,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4816326530612245 [2022-12-13 15:36:58,748 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 236 transitions. [2022-12-13 15:36:58,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 236 transitions. [2022-12-13 15:36:58,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:36:58,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 236 transitions. [2022-12-13 15:36:58,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 118.0) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:58,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 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) [2022-12-13 15:36:58,756 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 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) [2022-12-13 15:36:58,758 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 58 flow. Second operand 2 states and 236 transitions. [2022-12-13 15:36:58,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 94 flow [2022-12-13 15:36:58,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:36:58,761 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 48 flow [2022-12-13 15:36:58,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2022-12-13 15:36:58,765 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2022-12-13 15:36:58,765 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 48 flow [2022-12-13 15:36:58,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:58,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:36:58,765 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 15:36:58,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:36:58,766 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:36:58,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:36:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash 645236087, now seen corresponding path program 1 times [2022-12-13 15:36:58,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:36:58,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402913114] [2022-12-13 15:36:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:58,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:36:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:36:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:36:58,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:36:58,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402913114] [2022-12-13 15:36:58,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402913114] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:36:58,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:36:58,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:36:58,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697424255] [2022-12-13 15:36:58,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:36:58,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:36:58,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:58,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:36:58,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:36:58,963 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2022-12-13 15:36:58,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:58,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:36:58,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2022-12-13 15:36:58,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:36:59,173 INFO L130 PetriNetUnfolder]: 455/756 cut-off events. [2022-12-13 15:36:59,173 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:36:59,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 756 events. 455/756 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3138 event pairs, 35 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 1526. Up to 673 conditions per place. [2022-12-13 15:36:59,176 INFO L137 encePairwiseOnDemand]: 242/245 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2022-12-13 15:36:59,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 128 flow [2022-12-13 15:36:59,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:36:59,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:36:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2022-12-13 15:36:59,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46802721088435373 [2022-12-13 15:36:59,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2022-12-13 15:36:59,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2022-12-13 15:36:59,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:36:59,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2022-12-13 15:36:59,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 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) [2022-12-13 15:36:59,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:59,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:59,189 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 48 flow. Second operand 3 states and 344 transitions. [2022-12-13 15:36:59,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 128 flow [2022-12-13 15:36:59,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:36:59,190 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 50 flow [2022-12-13 15:36:59,190 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2022-12-13 15:36:59,191 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2022-12-13 15:36:59,191 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 50 flow [2022-12-13 15:36:59,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:59,192 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:36:59,192 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 15:36:59,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:36:59,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:36:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:36:59,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1472517236, now seen corresponding path program 1 times [2022-12-13 15:36:59,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:36:59,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413473067] [2022-12-13 15:36:59,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:59,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:36:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:36:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:36:59,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:36:59,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413473067] [2022-12-13 15:36:59,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413473067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:36:59,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:36:59,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 15:36:59,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124461527] [2022-12-13 15:36:59,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:36:59,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:36:59,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:59,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:36:59,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:36:59,287 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2022-12-13 15:36:59,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:59,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:36:59,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2022-12-13 15:36:59,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:36:59,474 INFO L130 PetriNetUnfolder]: 395/660 cut-off events. [2022-12-13 15:36:59,475 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-12-13 15:36:59,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 660 events. 395/660 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2588 event pairs, 95 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 1371. Up to 481 conditions per place. [2022-12-13 15:36:59,477 INFO L137 encePairwiseOnDemand]: 242/245 looper letters, 26 selfloop transitions, 2 changer transitions 2/30 dead transitions. [2022-12-13 15:36:59,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 128 flow [2022-12-13 15:36:59,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:36:59,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:36:59,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2022-12-13 15:36:59,478 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2022-12-13 15:36:59,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2022-12-13 15:36:59,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2022-12-13 15:36:59,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:36:59,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2022-12-13 15:36:59,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:59,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:59,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:59,481 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 50 flow. Second operand 3 states and 343 transitions. [2022-12-13 15:36:59,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 128 flow [2022-12-13 15:36:59,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:36:59,482 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 46 flow [2022-12-13 15:36:59,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, 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=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2022-12-13 15:36:59,483 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -5 predicate places. [2022-12-13 15:36:59,483 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 46 flow [2022-12-13 15:36:59,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:59,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:36:59,483 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:36:59,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:36:59,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:36:59,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:36:59,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1596656234, now seen corresponding path program 1 times [2022-12-13 15:36:59,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:36:59,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865666947] [2022-12-13 15:36:59,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:36:59,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:36:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:36:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:36:59,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:36:59,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865666947] [2022-12-13 15:36:59,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865666947] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:36:59,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:36:59,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:36:59,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573951325] [2022-12-13 15:36:59,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:36:59,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:36:59,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:36:59,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:36:59,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:36:59,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2022-12-13 15:36:59,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:36:59,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:36:59,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2022-12-13 15:36:59,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:00,161 INFO L130 PetriNetUnfolder]: 305/534 cut-off events. [2022-12-13 15:37:00,161 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 15:37:00,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 534 events. 305/534 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2037 event pairs, 119 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 1107. Up to 311 conditions per place. [2022-12-13 15:37:00,163 INFO L137 encePairwiseOnDemand]: 236/245 looper letters, 27 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2022-12-13 15:37:00,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 148 flow [2022-12-13 15:37:00,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:37:00,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:37:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 428 transitions. [2022-12-13 15:37:00,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43673469387755104 [2022-12-13 15:37:00,165 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 428 transitions. [2022-12-13 15:37:00,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 428 transitions. [2022-12-13 15:37:00,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:00,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 428 transitions. [2022-12-13 15:37:00,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:00,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:00,168 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:00,168 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 46 flow. Second operand 4 states and 428 transitions. [2022-12-13 15:37:00,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 148 flow [2022-12-13 15:37:00,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:37:00,169 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 100 flow [2022-12-13 15:37:00,169 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2022-12-13 15:37:00,169 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2022-12-13 15:37:00,169 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 100 flow [2022-12-13 15:37:00,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:00,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:00,170 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:00,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:37:00,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:00,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:00,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1596656245, now seen corresponding path program 1 times [2022-12-13 15:37:00,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:00,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42757933] [2022-12-13 15:37:00,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:00,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:00,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:00,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42757933] [2022-12-13 15:37:00,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42757933] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:00,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:00,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:37:00,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933244436] [2022-12-13 15:37:00,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:00,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:37:00,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:00,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:37:00,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:37:00,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 245 [2022-12-13 15:37:00,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:00,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:00,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 245 [2022-12-13 15:37:00,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:00,635 INFO L130 PetriNetUnfolder]: 351/625 cut-off events. [2022-12-13 15:37:00,635 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2022-12-13 15:37:00,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 625 events. 351/625 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2509 event pairs, 289 based on Foata normal form. 42/667 useless extension candidates. Maximal degree in co-relation 1613. Up to 373 conditions per place. [2022-12-13 15:37:00,637 INFO L137 encePairwiseOnDemand]: 241/245 looper letters, 36 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2022-12-13 15:37:00,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 39 transitions, 216 flow [2022-12-13 15:37:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:37:00,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:37:00,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 416 transitions. [2022-12-13 15:37:00,639 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42448979591836733 [2022-12-13 15:37:00,639 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 416 transitions. [2022-12-13 15:37:00,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 416 transitions. [2022-12-13 15:37:00,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:00,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 416 transitions. [2022-12-13 15:37:00,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:00,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:00,641 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:00,641 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 100 flow. Second operand 4 states and 416 transitions. [2022-12-13 15:37:00,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 39 transitions, 216 flow [2022-12-13 15:37:00,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:37:00,643 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 110 flow [2022-12-13 15:37:00,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2022-12-13 15:37:00,643 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2022-12-13 15:37:00,644 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 110 flow [2022-12-13 15:37:00,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.75) internal successors, (387), 4 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:00,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:00,644 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:00,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:37:00,644 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:00,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:00,645 INFO L85 PathProgramCache]: Analyzing trace with hash 106583050, now seen corresponding path program 1 times [2022-12-13 15:37:00,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:00,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707973510] [2022-12-13 15:37:00,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:00,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:01,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:01,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:01,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707973510] [2022-12-13 15:37:01,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707973510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:01,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:01,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:37:01,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607942554] [2022-12-13 15:37:01,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:01,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:37:01,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:01,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:37:01,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:37:01,364 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 245 [2022-12-13 15:37:01,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 110 flow. Second operand has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:01,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:01,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 245 [2022-12-13 15:37:01,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:01,537 INFO L130 PetriNetUnfolder]: 314/555 cut-off events. [2022-12-13 15:37:01,537 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2022-12-13 15:37:01,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1447 conditions, 555 events. 314/555 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2174 event pairs, 260 based on Foata normal form. 21/576 useless extension candidates. Maximal degree in co-relation 1438. Up to 548 conditions per place. [2022-12-13 15:37:01,539 INFO L137 encePairwiseOnDemand]: 241/245 looper letters, 20 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2022-12-13 15:37:01,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 25 transitions, 146 flow [2022-12-13 15:37:01,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:37:01,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:37:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 480 transitions. [2022-12-13 15:37:01,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39183673469387753 [2022-12-13 15:37:01,541 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 480 transitions. [2022-12-13 15:37:01,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 480 transitions. [2022-12-13 15:37:01,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:01,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 480 transitions. [2022-12-13 15:37:01,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:01,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:01,544 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:01,544 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 110 flow. Second operand 5 states and 480 transitions. [2022-12-13 15:37:01,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 25 transitions, 146 flow [2022-12-13 15:37:01,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 138 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 15:37:01,545 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 93 flow [2022-12-13 15:37:01,545 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2022-12-13 15:37:01,545 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2022-12-13 15:37:01,545 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 93 flow [2022-12-13 15:37:01,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 92.42857142857143) internal successors, (647), 7 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:01,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:01,546 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:01,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:37:01,546 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:01,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:01,546 INFO L85 PathProgramCache]: Analyzing trace with hash 2129022324, now seen corresponding path program 1 times [2022-12-13 15:37:01,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:01,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662548669] [2022-12-13 15:37:01,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:01,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:01,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:01,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662548669] [2022-12-13 15:37:01,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662548669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:01,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:01,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:37:01,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844830456] [2022-12-13 15:37:01,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:01,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:37:01,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:01,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:37:01,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:37:01,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2022-12-13 15:37:01,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:01,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:01,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2022-12-13 15:37:01,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:02,133 INFO L130 PetriNetUnfolder]: 293/522 cut-off events. [2022-12-13 15:37:02,133 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2022-12-13 15:37:02,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 522 events. 293/522 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2059 event pairs, 183 based on Foata normal form. 12/534 useless extension candidates. Maximal degree in co-relation 1345. Up to 373 conditions per place. [2022-12-13 15:37:02,135 INFO L137 encePairwiseOnDemand]: 242/245 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2022-12-13 15:37:02,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 180 flow [2022-12-13 15:37:02,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:37:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:37:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2022-12-13 15:37:02,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43945578231292515 [2022-12-13 15:37:02,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2022-12-13 15:37:02,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2022-12-13 15:37:02,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:02,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2022-12-13 15:37:02,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:02,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:02,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:02,139 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 93 flow. Second operand 3 states and 323 transitions. [2022-12-13 15:37:02,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 180 flow [2022-12-13 15:37:02,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:37:02,141 INFO L231 Difference]: Finished difference. Result has 36 places, 22 transitions, 103 flow [2022-12-13 15:37:02,141 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2022-12-13 15:37:02,141 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2022-12-13 15:37:02,141 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 103 flow [2022-12-13 15:37:02,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:02,142 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:02,142 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:02,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:37:02,142 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:02,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:02,142 INFO L85 PathProgramCache]: Analyzing trace with hash 475787625, now seen corresponding path program 1 times [2022-12-13 15:37:02,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:02,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335662831] [2022-12-13 15:37:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:02,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:02,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:02,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:02,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335662831] [2022-12-13 15:37:02,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335662831] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:02,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:02,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:37:02,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410145646] [2022-12-13 15:37:02,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:02,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:37:02,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:02,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:37:02,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:37:02,708 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 245 [2022-12-13 15:37:02,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:02,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:02,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 245 [2022-12-13 15:37:02,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:02,909 INFO L130 PetriNetUnfolder]: 332/588 cut-off events. [2022-12-13 15:37:02,909 INFO L131 PetriNetUnfolder]: For 264/264 co-relation queries the response was YES. [2022-12-13 15:37:02,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1596 conditions, 588 events. 332/588 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2366 event pairs, 29 based on Foata normal form. 4/592 useless extension candidates. Maximal degree in co-relation 1587. Up to 424 conditions per place. [2022-12-13 15:37:02,911 INFO L137 encePairwiseOnDemand]: 236/245 looper letters, 34 selfloop transitions, 10 changer transitions 0/44 dead transitions. [2022-12-13 15:37:02,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 266 flow [2022-12-13 15:37:02,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:37:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:37:02,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 647 transitions. [2022-12-13 15:37:02,913 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44013605442176873 [2022-12-13 15:37:02,913 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 647 transitions. [2022-12-13 15:37:02,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 647 transitions. [2022-12-13 15:37:02,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:02,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 647 transitions. [2022-12-13 15:37:02,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:02,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:02,916 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:02,916 INFO L175 Difference]: Start difference. First operand has 36 places, 22 transitions, 103 flow. Second operand 6 states and 647 transitions. [2022-12-13 15:37:02,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 266 flow [2022-12-13 15:37:02,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:37:02,917 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 178 flow [2022-12-13 15:37:02,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2022-12-13 15:37:02,918 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2022-12-13 15:37:02,918 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 178 flow [2022-12-13 15:37:02,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:02,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:02,918 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:02,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:37:02,918 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:02,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:02,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1649823057, now seen corresponding path program 2 times [2022-12-13 15:37:02,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:02,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857862352] [2022-12-13 15:37:02,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:02,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:03,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:03,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857862352] [2022-12-13 15:37:03,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857862352] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:03,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:03,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:37:03,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846113513] [2022-12-13 15:37:03,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:03,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:37:03,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:03,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:37:03,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:37:03,402 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 245 [2022-12-13 15:37:03,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 102.6) internal successors, (513), 5 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:03,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:03,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 245 [2022-12-13 15:37:03,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:03,639 INFO L130 PetriNetUnfolder]: 340/604 cut-off events. [2022-12-13 15:37:03,639 INFO L131 PetriNetUnfolder]: For 729/729 co-relation queries the response was YES. [2022-12-13 15:37:03,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 604 events. 340/604 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2471 event pairs, 74 based on Foata normal form. 1/605 useless extension candidates. Maximal degree in co-relation 1975. Up to 487 conditions per place. [2022-12-13 15:37:03,642 INFO L137 encePairwiseOnDemand]: 236/245 looper letters, 38 selfloop transitions, 16 changer transitions 0/54 dead transitions. [2022-12-13 15:37:03,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 396 flow [2022-12-13 15:37:03,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:37:03,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:37:03,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2022-12-13 15:37:03,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4424489795918367 [2022-12-13 15:37:03,644 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2022-12-13 15:37:03,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2022-12-13 15:37:03,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:03,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2022-12-13 15:37:03,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 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) [2022-12-13 15:37:03,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:03,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:03,647 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 178 flow. Second operand 5 states and 542 transitions. [2022-12-13 15:37:03,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 396 flow [2022-12-13 15:37:03,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 375 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-12-13 15:37:03,650 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 293 flow [2022-12-13 15:37:03,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2022-12-13 15:37:03,650 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2022-12-13 15:37:03,650 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 293 flow [2022-12-13 15:37:03,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.6) internal successors, (513), 5 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:03,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:03,651 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:03,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:37:03,651 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:03,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:03,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2077668873, now seen corresponding path program 3 times [2022-12-13 15:37:03,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:03,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857735955] [2022-12-13 15:37:03,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:03,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:04,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:04,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857735955] [2022-12-13 15:37:04,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857735955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:04,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:04,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 15:37:04,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594448016] [2022-12-13 15:37:04,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:04,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:37:04,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:04,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:37:04,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:37:04,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 245 [2022-12-13 15:37:04,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 293 flow. Second operand has 8 states, 8 states have (on average 98.625) internal successors, (789), 8 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:04,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:04,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 245 [2022-12-13 15:37:04,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:04,985 INFO L130 PetriNetUnfolder]: 336/598 cut-off events. [2022-12-13 15:37:04,985 INFO L131 PetriNetUnfolder]: For 1119/1119 co-relation queries the response was YES. [2022-12-13 15:37:04,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2321 conditions, 598 events. 336/598 cut-off events. For 1119/1119 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2425 event pairs, 30 based on Foata normal form. 2/600 useless extension candidates. Maximal degree in co-relation 2307. Up to 342 conditions per place. [2022-12-13 15:37:04,988 INFO L137 encePairwiseOnDemand]: 237/245 looper letters, 53 selfloop transitions, 23 changer transitions 0/76 dead transitions. [2022-12-13 15:37:04,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 76 transitions, 628 flow [2022-12-13 15:37:04,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:37:04,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 15:37:04,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 830 transitions. [2022-12-13 15:37:04,990 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2022-12-13 15:37:04,991 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 830 transitions. [2022-12-13 15:37:04,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 830 transitions. [2022-12-13 15:37:04,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:04,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 830 transitions. [2022-12-13 15:37:04,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 103.75) internal successors, (830), 8 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:04,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:04,994 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:04,994 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 293 flow. Second operand 8 states and 830 transitions. [2022-12-13 15:37:04,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 76 transitions, 628 flow [2022-12-13 15:37:04,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 76 transitions, 600 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-12-13 15:37:04,997 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 406 flow [2022-12-13 15:37:04,997 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=406, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2022-12-13 15:37:04,998 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2022-12-13 15:37:04,998 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 406 flow [2022-12-13 15:37:04,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 98.625) internal successors, (789), 8 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:04,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:04,998 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:04,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:37:04,998 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:04,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:04,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1027338872, now seen corresponding path program 1 times [2022-12-13 15:37:04,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:04,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519573532] [2022-12-13 15:37:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:04,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:05,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:05,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:05,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519573532] [2022-12-13 15:37:05,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519573532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:05,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:05,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:37:05,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882584235] [2022-12-13 15:37:05,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:05,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:37:05,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:05,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:37:05,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:37:05,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 245 [2022-12-13 15:37:05,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 102.33333333333333) internal successors, (614), 6 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:05,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:05,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 245 [2022-12-13 15:37:05,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:05,944 INFO L130 PetriNetUnfolder]: 393/700 cut-off events. [2022-12-13 15:37:05,944 INFO L131 PetriNetUnfolder]: For 1713/1713 co-relation queries the response was YES. [2022-12-13 15:37:05,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2789 conditions, 700 events. 393/700 cut-off events. For 1713/1713 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3052 event pairs, 28 based on Foata normal form. 4/704 useless extension candidates. Maximal degree in co-relation 2773. Up to 463 conditions per place. [2022-12-13 15:37:05,947 INFO L137 encePairwiseOnDemand]: 236/245 looper letters, 40 selfloop transitions, 25 changer transitions 0/65 dead transitions. [2022-12-13 15:37:05,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 65 transitions, 617 flow [2022-12-13 15:37:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:37:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:37:05,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 544 transitions. [2022-12-13 15:37:05,949 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4440816326530612 [2022-12-13 15:37:05,949 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 544 transitions. [2022-12-13 15:37:05,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 544 transitions. [2022-12-13 15:37:05,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:05,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 544 transitions. [2022-12-13 15:37:05,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.8) internal successors, (544), 5 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) [2022-12-13 15:37:05,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:05,952 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:05,952 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 406 flow. Second operand 5 states and 544 transitions. [2022-12-13 15:37:05,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 65 transitions, 617 flow [2022-12-13 15:37:05,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 65 transitions, 591 flow, removed 13 selfloop flow, removed 0 redundant places. [2022-12-13 15:37:05,956 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 495 flow [2022-12-13 15:37:05,956 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=495, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2022-12-13 15:37:05,956 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2022-12-13 15:37:05,956 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 495 flow [2022-12-13 15:37:05,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.33333333333333) internal successors, (614), 6 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:05,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:05,957 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:05,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:37:05,957 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1811035076, now seen corresponding path program 2 times [2022-12-13 15:37:05,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:05,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684516755] [2022-12-13 15:37:05,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:05,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:07,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:07,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684516755] [2022-12-13 15:37:07,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684516755] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:07,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:07,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:37:07,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751121227] [2022-12-13 15:37:07,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:07,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:37:07,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:07,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:37:07,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:37:07,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 245 [2022-12-13 15:37:07,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 495 flow. Second operand has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:07,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:07,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 245 [2022-12-13 15:37:07,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:07,643 INFO L130 PetriNetUnfolder]: 456/806 cut-off events. [2022-12-13 15:37:07,643 INFO L131 PetriNetUnfolder]: For 2374/2374 co-relation queries the response was YES. [2022-12-13 15:37:07,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3414 conditions, 806 events. 456/806 cut-off events. For 2374/2374 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3639 event pairs, 80 based on Foata normal form. 4/810 useless extension candidates. Maximal degree in co-relation 3396. Up to 407 conditions per place. [2022-12-13 15:37:07,650 INFO L137 encePairwiseOnDemand]: 237/245 looper letters, 55 selfloop transitions, 29 changer transitions 0/84 dead transitions. [2022-12-13 15:37:07,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 84 transitions, 831 flow [2022-12-13 15:37:07,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:37:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 15:37:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 834 transitions. [2022-12-13 15:37:07,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42551020408163265 [2022-12-13 15:37:07,653 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 834 transitions. [2022-12-13 15:37:07,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 834 transitions. [2022-12-13 15:37:07,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:07,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 834 transitions. [2022-12-13 15:37:07,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:07,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:07,658 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:07,658 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 495 flow. Second operand 8 states and 834 transitions. [2022-12-13 15:37:07,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 84 transitions, 831 flow [2022-12-13 15:37:07,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 84 transitions, 781 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-13 15:37:07,665 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 633 flow [2022-12-13 15:37:07,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=633, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2022-12-13 15:37:07,665 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2022-12-13 15:37:07,666 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 633 flow [2022-12-13 15:37:07,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.0) internal successors, (693), 7 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:07,666 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:07,666 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:07,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:37:07,666 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:07,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:07,666 INFO L85 PathProgramCache]: Analyzing trace with hash 819094204, now seen corresponding path program 1 times [2022-12-13 15:37:07,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:07,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248993848] [2022-12-13 15:37:07,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:07,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:08,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:08,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248993848] [2022-12-13 15:37:08,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248993848] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:08,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:08,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:37:08,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739283522] [2022-12-13 15:37:08,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:08,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:37:08,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:08,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:37:08,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:37:08,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 245 [2022-12-13 15:37:08,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 633 flow. Second operand has 6 states, 6 states have (on average 98.33333333333333) internal successors, (590), 6 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:08,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:08,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 245 [2022-12-13 15:37:08,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:08,628 INFO L130 PetriNetUnfolder]: 490/868 cut-off events. [2022-12-13 15:37:08,628 INFO L131 PetriNetUnfolder]: For 3238/3238 co-relation queries the response was YES. [2022-12-13 15:37:08,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3816 conditions, 868 events. 490/868 cut-off events. For 3238/3238 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3991 event pairs, 43 based on Foata normal form. 6/874 useless extension candidates. Maximal degree in co-relation 3795. Up to 560 conditions per place. [2022-12-13 15:37:08,632 INFO L137 encePairwiseOnDemand]: 235/245 looper letters, 56 selfloop transitions, 38 changer transitions 0/94 dead transitions. [2022-12-13 15:37:08,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 1036 flow [2022-12-13 15:37:08,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:37:08,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:37:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 729 transitions. [2022-12-13 15:37:08,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4250728862973761 [2022-12-13 15:37:08,634 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 729 transitions. [2022-12-13 15:37:08,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 729 transitions. [2022-12-13 15:37:08,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:08,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 729 transitions. [2022-12-13 15:37:08,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 104.14285714285714) internal successors, (729), 7 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:08,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:08,637 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:08,637 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 633 flow. Second operand 7 states and 729 transitions. [2022-12-13 15:37:08,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 1036 flow [2022-12-13 15:37:08,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 94 transitions, 982 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-12-13 15:37:08,643 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 854 flow [2022-12-13 15:37:08,643 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=854, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2022-12-13 15:37:08,643 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 39 predicate places. [2022-12-13 15:37:08,643 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 854 flow [2022-12-13 15:37:08,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.33333333333333) internal successors, (590), 6 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:08,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:08,644 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:08,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:37:08,644 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:08,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:08,644 INFO L85 PathProgramCache]: Analyzing trace with hash -529218482, now seen corresponding path program 2 times [2022-12-13 15:37:08,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:08,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582207938] [2022-12-13 15:37:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:08,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:09,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:09,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582207938] [2022-12-13 15:37:09,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582207938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:09,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:09,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:37:09,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278549730] [2022-12-13 15:37:09,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:09,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:37:09,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:09,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:37:09,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:37:09,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 245 [2022-12-13 15:37:09,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 854 flow. Second operand has 11 states, 11 states have (on average 97.27272727272727) internal successors, (1070), 11 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:09,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:09,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 245 [2022-12-13 15:37:09,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:09,745 INFO L130 PetriNetUnfolder]: 548/991 cut-off events. [2022-12-13 15:37:09,745 INFO L131 PetriNetUnfolder]: For 4735/4735 co-relation queries the response was YES. [2022-12-13 15:37:09,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 991 events. 548/991 cut-off events. For 4735/4735 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4843 event pairs, 76 based on Foata normal form. 18/1009 useless extension candidates. Maximal degree in co-relation 4709. Up to 542 conditions per place. [2022-12-13 15:37:09,749 INFO L137 encePairwiseOnDemand]: 233/245 looper letters, 100 selfloop transitions, 65 changer transitions 6/171 dead transitions. [2022-12-13 15:37:09,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 171 transitions, 2015 flow [2022-12-13 15:37:09,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 15:37:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 15:37:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1344 transitions. [2022-12-13 15:37:09,752 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.421978021978022 [2022-12-13 15:37:09,752 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1344 transitions. [2022-12-13 15:37:09,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1344 transitions. [2022-12-13 15:37:09,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:09,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1344 transitions. [2022-12-13 15:37:09,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 103.38461538461539) internal successors, (1344), 13 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:09,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 245.0) internal successors, (3430), 14 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:09,757 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 245.0) internal successors, (3430), 14 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:09,757 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 854 flow. Second operand 13 states and 1344 transitions. [2022-12-13 15:37:09,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 171 transitions, 2015 flow [2022-12-13 15:37:09,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 171 transitions, 1875 flow, removed 22 selfloop flow, removed 2 redundant places. [2022-12-13 15:37:09,768 INFO L231 Difference]: Finished difference. Result has 88 places, 127 transitions, 1504 flow [2022-12-13 15:37:09,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1504, PETRI_PLACES=88, PETRI_TRANSITIONS=127} [2022-12-13 15:37:09,768 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 55 predicate places. [2022-12-13 15:37:09,769 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 127 transitions, 1504 flow [2022-12-13 15:37:09,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 97.27272727272727) internal successors, (1070), 11 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:09,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:09,769 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:09,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 15:37:09,770 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:09,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:09,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1491282866, now seen corresponding path program 3 times [2022-12-13 15:37:09,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:09,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857722880] [2022-12-13 15:37:09,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:09,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:10,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:10,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857722880] [2022-12-13 15:37:10,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857722880] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:10,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:10,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:37:10,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658992242] [2022-12-13 15:37:10,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:10,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:37:10,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:10,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:37:10,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:37:10,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 245 [2022-12-13 15:37:10,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 127 transitions, 1504 flow. Second operand has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:10,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:10,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 245 [2022-12-13 15:37:10,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:10,708 INFO L130 PetriNetUnfolder]: 517/945 cut-off events. [2022-12-13 15:37:10,709 INFO L131 PetriNetUnfolder]: For 5087/5087 co-relation queries the response was YES. [2022-12-13 15:37:10,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4926 conditions, 945 events. 517/945 cut-off events. For 5087/5087 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4619 event pairs, 50 based on Foata normal form. 5/950 useless extension candidates. Maximal degree in co-relation 4897. Up to 559 conditions per place. [2022-12-13 15:37:10,714 INFO L137 encePairwiseOnDemand]: 236/245 looper letters, 88 selfloop transitions, 58 changer transitions 0/146 dead transitions. [2022-12-13 15:37:10,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 146 transitions, 1944 flow [2022-12-13 15:37:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:37:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:37:10,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-12-13 15:37:10,715 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4228571428571429 [2022-12-13 15:37:10,715 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-12-13 15:37:10,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-12-13 15:37:10,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:10,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-12-13 15:37:10,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:10,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:10,718 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:10,718 INFO L175 Difference]: Start difference. First operand has 88 places, 127 transitions, 1504 flow. Second operand 5 states and 518 transitions. [2022-12-13 15:37:10,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 146 transitions, 1944 flow [2022-12-13 15:37:10,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 146 transitions, 1892 flow, removed 26 selfloop flow, removed 0 redundant places. [2022-12-13 15:37:10,732 INFO L231 Difference]: Finished difference. Result has 94 places, 134 transitions, 1773 flow [2022-12-13 15:37:10,732 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1773, PETRI_PLACES=94, PETRI_TRANSITIONS=134} [2022-12-13 15:37:10,733 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 61 predicate places. [2022-12-13 15:37:10,733 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 134 transitions, 1773 flow [2022-12-13 15:37:10,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:10,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:10,733 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:10,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:37:10,733 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:10,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:10,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1483864818, now seen corresponding path program 3 times [2022-12-13 15:37:10,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:10,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39099613] [2022-12-13 15:37:10,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:10,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:12,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:12,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39099613] [2022-12-13 15:37:12,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39099613] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:12,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:12,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:37:12,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592333962] [2022-12-13 15:37:12,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:12,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:37:12,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:12,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:37:12,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:37:12,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 245 [2022-12-13 15:37:12,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 134 transitions, 1773 flow. Second operand has 9 states, 9 states have (on average 100.55555555555556) internal successors, (905), 9 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:12,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:12,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 245 [2022-12-13 15:37:12,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:12,638 INFO L130 PetriNetUnfolder]: 534/976 cut-off events. [2022-12-13 15:37:12,639 INFO L131 PetriNetUnfolder]: For 6548/6548 co-relation queries the response was YES. [2022-12-13 15:37:12,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5376 conditions, 976 events. 534/976 cut-off events. For 6548/6548 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4799 event pairs, 48 based on Foata normal form. 2/978 useless extension candidates. Maximal degree in co-relation 5344. Up to 436 conditions per place. [2022-12-13 15:37:12,644 INFO L137 encePairwiseOnDemand]: 239/245 looper letters, 140 selfloop transitions, 32 changer transitions 1/173 dead transitions. [2022-12-13 15:37:12,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 173 transitions, 2412 flow [2022-12-13 15:37:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:37:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:37:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 747 transitions. [2022-12-13 15:37:12,646 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43556851311953354 [2022-12-13 15:37:12,646 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 747 transitions. [2022-12-13 15:37:12,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 747 transitions. [2022-12-13 15:37:12,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:12,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 747 transitions. [2022-12-13 15:37:12,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:12,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:12,649 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:12,649 INFO L175 Difference]: Start difference. First operand has 94 places, 134 transitions, 1773 flow. Second operand 7 states and 747 transitions. [2022-12-13 15:37:12,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 173 transitions, 2412 flow [2022-12-13 15:37:12,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 173 transitions, 2355 flow, removed 13 selfloop flow, removed 4 redundant places. [2022-12-13 15:37:12,666 INFO L231 Difference]: Finished difference. Result has 97 places, 136 transitions, 1821 flow [2022-12-13 15:37:12,666 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1821, PETRI_PLACES=97, PETRI_TRANSITIONS=136} [2022-12-13 15:37:12,666 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 64 predicate places. [2022-12-13 15:37:12,666 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 136 transitions, 1821 flow [2022-12-13 15:37:12,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 100.55555555555556) internal successors, (905), 9 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:12,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:12,667 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:12,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 15:37:12,667 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:12,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:12,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1140736290, now seen corresponding path program 1 times [2022-12-13 15:37:12,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:12,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137520290] [2022-12-13 15:37:12,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:12,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:13,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:13,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137520290] [2022-12-13 15:37:13,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137520290] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:13,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:13,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:37:13,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737545024] [2022-12-13 15:37:13,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:13,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:37:13,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:13,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:37:13,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:37:13,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2022-12-13 15:37:13,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 136 transitions, 1821 flow. Second operand has 9 states, 9 states have (on average 99.66666666666667) internal successors, (897), 9 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:13,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:13,331 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2022-12-13 15:37:13,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:13,747 INFO L130 PetriNetUnfolder]: 493/909 cut-off events. [2022-12-13 15:37:13,747 INFO L131 PetriNetUnfolder]: For 7007/7007 co-relation queries the response was YES. [2022-12-13 15:37:13,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5056 conditions, 909 events. 493/909 cut-off events. For 7007/7007 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4455 event pairs, 89 based on Foata normal form. 16/925 useless extension candidates. Maximal degree in co-relation 5025. Up to 446 conditions per place. [2022-12-13 15:37:13,752 INFO L137 encePairwiseOnDemand]: 237/245 looper letters, 89 selfloop transitions, 57 changer transitions 16/162 dead transitions. [2022-12-13 15:37:13,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 162 transitions, 2316 flow [2022-12-13 15:37:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:37:13,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 15:37:13,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 845 transitions. [2022-12-13 15:37:13,753 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43112244897959184 [2022-12-13 15:37:13,754 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 845 transitions. [2022-12-13 15:37:13,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 845 transitions. [2022-12-13 15:37:13,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:13,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 845 transitions. [2022-12-13 15:37:13,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 105.625) internal successors, (845), 8 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:13,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:13,757 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:13,757 INFO L175 Difference]: Start difference. First operand has 97 places, 136 transitions, 1821 flow. Second operand 8 states and 845 transitions. [2022-12-13 15:37:13,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 162 transitions, 2316 flow [2022-12-13 15:37:13,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 162 transitions, 2247 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-12-13 15:37:13,769 INFO L231 Difference]: Finished difference. Result has 101 places, 128 transitions, 1829 flow [2022-12-13 15:37:13,770 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1829, PETRI_PLACES=101, PETRI_TRANSITIONS=128} [2022-12-13 15:37:13,770 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 68 predicate places. [2022-12-13 15:37:13,770 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 128 transitions, 1829 flow [2022-12-13 15:37:13,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 99.66666666666667) internal successors, (897), 9 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:13,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:13,770 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:13,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 15:37:13,771 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:13,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:13,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1198345139, now seen corresponding path program 1 times [2022-12-13 15:37:13,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:13,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89405578] [2022-12-13 15:37:13,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:13,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:14,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:14,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89405578] [2022-12-13 15:37:14,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89405578] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:14,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:14,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:37:14,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343463956] [2022-12-13 15:37:14,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:14,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:37:14,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:14,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:37:14,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:37:14,111 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 245 [2022-12-13 15:37:14,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 128 transitions, 1829 flow. Second operand has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:14,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:14,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 245 [2022-12-13 15:37:14,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:14,428 INFO L130 PetriNetUnfolder]: 452/825 cut-off events. [2022-12-13 15:37:14,428 INFO L131 PetriNetUnfolder]: For 6970/6970 co-relation queries the response was YES. [2022-12-13 15:37:14,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4808 conditions, 825 events. 452/825 cut-off events. For 6970/6970 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3865 event pairs, 102 based on Foata normal form. 8/833 useless extension candidates. Maximal degree in co-relation 4777. Up to 529 conditions per place. [2022-12-13 15:37:14,432 INFO L137 encePairwiseOnDemand]: 235/245 looper letters, 94 selfloop transitions, 49 changer transitions 9/152 dead transitions. [2022-12-13 15:37:14,433 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 152 transitions, 2354 flow [2022-12-13 15:37:14,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:37:14,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 15:37:14,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 742 transitions. [2022-12-13 15:37:14,434 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4326530612244898 [2022-12-13 15:37:14,434 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 742 transitions. [2022-12-13 15:37:14,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 742 transitions. [2022-12-13 15:37:14,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:14,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 742 transitions. [2022-12-13 15:37:14,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:14,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:14,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 245.0) internal successors, (1960), 8 states have internal predecessors, (1960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:14,437 INFO L175 Difference]: Start difference. First operand has 101 places, 128 transitions, 1829 flow. Second operand 7 states and 742 transitions. [2022-12-13 15:37:14,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 152 transitions, 2354 flow [2022-12-13 15:37:14,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 152 transitions, 2295 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 15:37:14,450 INFO L231 Difference]: Finished difference. Result has 103 places, 134 transitions, 2016 flow [2022-12-13 15:37:14,450 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1773, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2016, PETRI_PLACES=103, PETRI_TRANSITIONS=134} [2022-12-13 15:37:14,450 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 70 predicate places. [2022-12-13 15:37:14,450 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 134 transitions, 2016 flow [2022-12-13 15:37:14,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.5) internal successors, (609), 6 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:14,451 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:14,451 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:14,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 15:37:14,451 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:14,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:14,451 INFO L85 PathProgramCache]: Analyzing trace with hash 149346143, now seen corresponding path program 2 times [2022-12-13 15:37:14,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:14,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673827601] [2022-12-13 15:37:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:14,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:14,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:14,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:14,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673827601] [2022-12-13 15:37:14,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673827601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:14,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:14,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:37:14,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112945146] [2022-12-13 15:37:14,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:14,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:37:14,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:14,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:37:14,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:37:14,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 245 [2022-12-13 15:37:14,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 134 transitions, 2016 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:14,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:14,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 245 [2022-12-13 15:37:14,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:14,894 INFO L130 PetriNetUnfolder]: 467/869 cut-off events. [2022-12-13 15:37:14,895 INFO L131 PetriNetUnfolder]: For 9213/9213 co-relation queries the response was YES. [2022-12-13 15:37:14,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5321 conditions, 869 events. 467/869 cut-off events. For 9213/9213 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4267 event pairs, 172 based on Foata normal form. 8/877 useless extension candidates. Maximal degree in co-relation 5289. Up to 595 conditions per place. [2022-12-13 15:37:14,899 INFO L137 encePairwiseOnDemand]: 238/245 looper letters, 90 selfloop transitions, 38 changer transitions 40/168 dead transitions. [2022-12-13 15:37:14,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 168 transitions, 2787 flow [2022-12-13 15:37:14,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:37:14,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:37:14,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2022-12-13 15:37:14,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45 [2022-12-13 15:37:14,900 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 441 transitions. [2022-12-13 15:37:14,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 441 transitions. [2022-12-13 15:37:14,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:14,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 441 transitions. [2022-12-13 15:37:14,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:14,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:14,902 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:14,902 INFO L175 Difference]: Start difference. First operand has 103 places, 134 transitions, 2016 flow. Second operand 4 states and 441 transitions. [2022-12-13 15:37:14,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 168 transitions, 2787 flow [2022-12-13 15:37:14,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 168 transitions, 2737 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-12-13 15:37:14,918 INFO L231 Difference]: Finished difference. Result has 105 places, 122 transitions, 1937 flow [2022-12-13 15:37:14,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1972, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1937, PETRI_PLACES=105, PETRI_TRANSITIONS=122} [2022-12-13 15:37:14,919 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 72 predicate places. [2022-12-13 15:37:14,919 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 122 transitions, 1937 flow [2022-12-13 15:37:14,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:14,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:14,919 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:14,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 15:37:14,919 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:14,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:14,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1695746086, now seen corresponding path program 2 times [2022-12-13 15:37:14,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:14,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726986434] [2022-12-13 15:37:14,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:14,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:15,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:15,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726986434] [2022-12-13 15:37:15,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726986434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:15,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:15,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:37:15,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527874317] [2022-12-13 15:37:15,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:15,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:37:15,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:15,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:37:15,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:37:15,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 245 [2022-12-13 15:37:15,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 122 transitions, 1937 flow. Second operand has 7 states, 7 states have (on average 102.14285714285714) internal successors, (715), 7 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:15,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:15,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 245 [2022-12-13 15:37:15,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:15,830 INFO L130 PetriNetUnfolder]: 387/740 cut-off events. [2022-12-13 15:37:15,830 INFO L131 PetriNetUnfolder]: For 7989/7989 co-relation queries the response was YES. [2022-12-13 15:37:15,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4580 conditions, 740 events. 387/740 cut-off events. For 7989/7989 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3561 event pairs, 53 based on Foata normal form. 8/748 useless extension candidates. Maximal degree in co-relation 4546. Up to 390 conditions per place. [2022-12-13 15:37:15,834 INFO L137 encePairwiseOnDemand]: 235/245 looper letters, 94 selfloop transitions, 65 changer transitions 13/172 dead transitions. [2022-12-13 15:37:15,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 172 transitions, 2734 flow [2022-12-13 15:37:15,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:37:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 15:37:15,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1072 transitions. [2022-12-13 15:37:15,836 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43755102040816324 [2022-12-13 15:37:15,836 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1072 transitions. [2022-12-13 15:37:15,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1072 transitions. [2022-12-13 15:37:15,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:15,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1072 transitions. [2022-12-13 15:37:15,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.2) internal successors, (1072), 10 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:15,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 245.0) internal successors, (2695), 11 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:15,838 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 245.0) internal successors, (2695), 11 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:15,839 INFO L175 Difference]: Start difference. First operand has 105 places, 122 transitions, 1937 flow. Second operand 10 states and 1072 transitions. [2022-12-13 15:37:15,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 172 transitions, 2734 flow [2022-12-13 15:37:15,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 172 transitions, 2587 flow, removed 17 selfloop flow, removed 5 redundant places. [2022-12-13 15:37:15,854 INFO L231 Difference]: Finished difference. Result has 111 places, 131 transitions, 2156 flow [2022-12-13 15:37:15,855 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2156, PETRI_PLACES=111, PETRI_TRANSITIONS=131} [2022-12-13 15:37:15,855 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 78 predicate places. [2022-12-13 15:37:15,855 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 2156 flow [2022-12-13 15:37:15,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.14285714285714) internal successors, (715), 7 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:15,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:15,855 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:15,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 15:37:15,856 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:15,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:15,856 INFO L85 PathProgramCache]: Analyzing trace with hash -651061677, now seen corresponding path program 3 times [2022-12-13 15:37:15,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:15,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841600430] [2022-12-13 15:37:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:15,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:16,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:16,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:16,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841600430] [2022-12-13 15:37:16,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841600430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:16,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:16,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:37:16,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122421920] [2022-12-13 15:37:16,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:16,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:37:16,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:37:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:37:16,238 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2022-12-13 15:37:16,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 2156 flow. Second operand has 7 states, 7 states have (on average 100.14285714285714) internal successors, (701), 7 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:16,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:16,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2022-12-13 15:37:16,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:16,521 INFO L130 PetriNetUnfolder]: 380/763 cut-off events. [2022-12-13 15:37:16,521 INFO L131 PetriNetUnfolder]: For 9486/9486 co-relation queries the response was YES. [2022-12-13 15:37:16,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4909 conditions, 763 events. 380/763 cut-off events. For 9486/9486 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3904 event pairs, 57 based on Foata normal form. 12/775 useless extension candidates. Maximal degree in co-relation 4875. Up to 315 conditions per place. [2022-12-13 15:37:16,525 INFO L137 encePairwiseOnDemand]: 240/245 looper letters, 99 selfloop transitions, 19 changer transitions 45/163 dead transitions. [2022-12-13 15:37:16,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 163 transitions, 2929 flow [2022-12-13 15:37:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:37:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:37:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 529 transitions. [2022-12-13 15:37:16,527 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43183673469387757 [2022-12-13 15:37:16,527 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 529 transitions. [2022-12-13 15:37:16,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 529 transitions. [2022-12-13 15:37:16,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:16,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 529 transitions. [2022-12-13 15:37:16,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:16,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:16,529 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:16,529 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 2156 flow. Second operand 5 states and 529 transitions. [2022-12-13 15:37:16,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 163 transitions, 2929 flow [2022-12-13 15:37:16,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 163 transitions, 2836 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-12-13 15:37:16,547 INFO L231 Difference]: Finished difference. Result has 113 places, 106 transitions, 1710 flow [2022-12-13 15:37:16,547 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1710, PETRI_PLACES=113, PETRI_TRANSITIONS=106} [2022-12-13 15:37:16,547 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 80 predicate places. [2022-12-13 15:37:16,547 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 106 transitions, 1710 flow [2022-12-13 15:37:16,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.14285714285714) internal successors, (701), 7 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:16,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:16,547 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:16,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 15:37:16,548 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:16,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1428307693, now seen corresponding path program 4 times [2022-12-13 15:37:16,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:16,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992030937] [2022-12-13 15:37:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:16,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:16,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:16,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:16,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992030937] [2022-12-13 15:37:16,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992030937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:16,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:16,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:37:16,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035599860] [2022-12-13 15:37:16,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:16,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:37:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:16,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:37:16,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:37:16,833 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 245 [2022-12-13 15:37:16,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 106 transitions, 1710 flow. Second operand has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:16,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:16,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 245 [2022-12-13 15:37:16,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:17,106 INFO L130 PetriNetUnfolder]: 265/526 cut-off events. [2022-12-13 15:37:17,107 INFO L131 PetriNetUnfolder]: For 6357/6357 co-relation queries the response was YES. [2022-12-13 15:37:17,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3428 conditions, 526 events. 265/526 cut-off events. For 6357/6357 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2412 event pairs, 24 based on Foata normal form. 8/534 useless extension candidates. Maximal degree in co-relation 3393. Up to 190 conditions per place. [2022-12-13 15:37:17,110 INFO L137 encePairwiseOnDemand]: 234/245 looper letters, 69 selfloop transitions, 50 changer transitions 35/154 dead transitions. [2022-12-13 15:37:17,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 154 transitions, 2553 flow [2022-12-13 15:37:17,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:37:17,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 15:37:17,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 943 transitions. [2022-12-13 15:37:17,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42766439909297055 [2022-12-13 15:37:17,112 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 943 transitions. [2022-12-13 15:37:17,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 943 transitions. [2022-12-13 15:37:17,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:17,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 943 transitions. [2022-12-13 15:37:17,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.77777777777777) internal successors, (943), 9 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:17,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:17,115 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:17,115 INFO L175 Difference]: Start difference. First operand has 113 places, 106 transitions, 1710 flow. Second operand 9 states and 943 transitions. [2022-12-13 15:37:17,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 154 transitions, 2553 flow [2022-12-13 15:37:17,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 154 transitions, 2349 flow, removed 38 selfloop flow, removed 19 redundant places. [2022-12-13 15:37:17,128 INFO L231 Difference]: Finished difference. Result has 106 places, 97 transitions, 1580 flow [2022-12-13 15:37:17,128 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1580, PETRI_PLACES=106, PETRI_TRANSITIONS=97} [2022-12-13 15:37:17,128 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 73 predicate places. [2022-12-13 15:37:17,128 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 97 transitions, 1580 flow [2022-12-13 15:37:17,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:17,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:17,129 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:17,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 15:37:17,129 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:17,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:17,129 INFO L85 PathProgramCache]: Analyzing trace with hash 54972581, now seen corresponding path program 1 times [2022-12-13 15:37:17,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:17,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134823844] [2022-12-13 15:37:17,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:17,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:17,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:17,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134823844] [2022-12-13 15:37:17,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134823844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:17,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:17,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 15:37:17,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311744294] [2022-12-13 15:37:17,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:17,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:37:17,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:17,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:37:17,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:37:17,687 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 245 [2022-12-13 15:37:17,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 97 transitions, 1580 flow. Second operand has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:17,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:17,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 245 [2022-12-13 15:37:17,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:17,968 INFO L130 PetriNetUnfolder]: 261/516 cut-off events. [2022-12-13 15:37:17,968 INFO L131 PetriNetUnfolder]: For 5438/5438 co-relation queries the response was YES. [2022-12-13 15:37:17,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3359 conditions, 516 events. 261/516 cut-off events. For 5438/5438 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2330 event pairs, 40 based on Foata normal form. 8/524 useless extension candidates. Maximal degree in co-relation 3325. Up to 206 conditions per place. [2022-12-13 15:37:17,971 INFO L137 encePairwiseOnDemand]: 237/245 looper letters, 44 selfloop transitions, 29 changer transitions 47/120 dead transitions. [2022-12-13 15:37:17,971 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 120 transitions, 1975 flow [2022-12-13 15:37:17,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:37:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 15:37:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 820 transitions. [2022-12-13 15:37:17,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2022-12-13 15:37:17,973 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 820 transitions. [2022-12-13 15:37:17,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 820 transitions. [2022-12-13 15:37:17,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:17,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 820 transitions. [2022-12-13 15:37:17,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 102.5) internal successors, (820), 8 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:17,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:17,976 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:17,976 INFO L175 Difference]: Start difference. First operand has 106 places, 97 transitions, 1580 flow. Second operand 8 states and 820 transitions. [2022-12-13 15:37:17,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 120 transitions, 1975 flow [2022-12-13 15:37:17,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 120 transitions, 1628 flow, removed 36 selfloop flow, removed 14 redundant places. [2022-12-13 15:37:17,996 INFO L231 Difference]: Finished difference. Result has 99 places, 69 transitions, 990 flow [2022-12-13 15:37:17,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=990, PETRI_PLACES=99, PETRI_TRANSITIONS=69} [2022-12-13 15:37:17,996 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 66 predicate places. [2022-12-13 15:37:17,997 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 69 transitions, 990 flow [2022-12-13 15:37:17,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 99.0) internal successors, (792), 8 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:17,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:17,997 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:17,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 15:37:17,997 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:17,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:17,998 INFO L85 PathProgramCache]: Analyzing trace with hash 726853481, now seen corresponding path program 2 times [2022-12-13 15:37:17,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:17,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350564621] [2022-12-13 15:37:17,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:17,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:19,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:19,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350564621] [2022-12-13 15:37:19,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350564621] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:19,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:19,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:37:19,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696171951] [2022-12-13 15:37:19,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:19,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:37:19,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:19,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:37:19,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:37:19,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 245 [2022-12-13 15:37:19,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 69 transitions, 990 flow. Second operand has 11 states, 11 states have (on average 96.45454545454545) internal successors, (1061), 11 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:19,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:19,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 245 [2022-12-13 15:37:19,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:19,435 INFO L130 PetriNetUnfolder]: 159/320 cut-off events. [2022-12-13 15:37:19,436 INFO L131 PetriNetUnfolder]: For 3476/3476 co-relation queries the response was YES. [2022-12-13 15:37:19,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2083 conditions, 320 events. 159/320 cut-off events. For 3476/3476 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1243 event pairs, 17 based on Foata normal form. 4/324 useless extension candidates. Maximal degree in co-relation 2052. Up to 127 conditions per place. [2022-12-13 15:37:19,437 INFO L137 encePairwiseOnDemand]: 236/245 looper letters, 59 selfloop transitions, 46 changer transitions 9/114 dead transitions. [2022-12-13 15:37:19,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 114 transitions, 1659 flow [2022-12-13 15:37:19,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:37:19,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 15:37:19,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1011 transitions. [2022-12-13 15:37:19,439 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4126530612244898 [2022-12-13 15:37:19,439 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1011 transitions. [2022-12-13 15:37:19,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1011 transitions. [2022-12-13 15:37:19,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:19,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1011 transitions. [2022-12-13 15:37:19,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 101.1) internal successors, (1011), 10 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:19,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 245.0) internal successors, (2695), 11 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:19,442 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 245.0) internal successors, (2695), 11 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:19,442 INFO L175 Difference]: Start difference. First operand has 99 places, 69 transitions, 990 flow. Second operand 10 states and 1011 transitions. [2022-12-13 15:37:19,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 114 transitions, 1659 flow [2022-12-13 15:37:19,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 1290 flow, removed 32 selfloop flow, removed 19 redundant places. [2022-12-13 15:37:19,449 INFO L231 Difference]: Finished difference. Result has 86 places, 84 transitions, 1066 flow [2022-12-13 15:37:19,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1066, PETRI_PLACES=86, PETRI_TRANSITIONS=84} [2022-12-13 15:37:19,449 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 53 predicate places. [2022-12-13 15:37:19,449 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 84 transitions, 1066 flow [2022-12-13 15:37:19,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 96.45454545454545) internal successors, (1061), 11 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:19,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:19,450 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:19,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 15:37:19,450 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:19,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:19,450 INFO L85 PathProgramCache]: Analyzing trace with hash 746190865, now seen corresponding path program 3 times [2022-12-13 15:37:19,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:19,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696516202] [2022-12-13 15:37:19,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:19,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:20,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:20,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696516202] [2022-12-13 15:37:20,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696516202] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:20,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:20,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:37:20,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5347802] [2022-12-13 15:37:20,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:20,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:37:20,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:37:20,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:37:20,527 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 245 [2022-12-13 15:37:20,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 1066 flow. Second operand has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:20,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:20,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 245 [2022-12-13 15:37:20,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:20,950 INFO L130 PetriNetUnfolder]: 160/333 cut-off events. [2022-12-13 15:37:20,950 INFO L131 PetriNetUnfolder]: For 2134/2134 co-relation queries the response was YES. [2022-12-13 15:37:20,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 333 events. 160/333 cut-off events. For 2134/2134 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1356 event pairs, 10 based on Foata normal form. 4/337 useless extension candidates. Maximal degree in co-relation 1883. Up to 122 conditions per place. [2022-12-13 15:37:20,951 INFO L137 encePairwiseOnDemand]: 236/245 looper letters, 49 selfloop transitions, 28 changer transitions 30/107 dead transitions. [2022-12-13 15:37:20,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 107 transitions, 1412 flow [2022-12-13 15:37:20,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:37:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 15:37:20,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 824 transitions. [2022-12-13 15:37:20,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4204081632653061 [2022-12-13 15:37:20,953 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 824 transitions. [2022-12-13 15:37:20,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 824 transitions. [2022-12-13 15:37:20,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:20,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 824 transitions. [2022-12-13 15:37:20,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 103.0) internal successors, (824), 8 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) [2022-12-13 15:37:20,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:20,955 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:20,955 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 1066 flow. Second operand 8 states and 824 transitions. [2022-12-13 15:37:20,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 107 transitions, 1412 flow [2022-12-13 15:37:20,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 107 transitions, 1358 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-12-13 15:37:20,962 INFO L231 Difference]: Finished difference. Result has 92 places, 70 transitions, 899 flow [2022-12-13 15:37:20,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=899, PETRI_PLACES=92, PETRI_TRANSITIONS=70} [2022-12-13 15:37:20,962 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 59 predicate places. [2022-12-13 15:37:20,962 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 70 transitions, 899 flow [2022-12-13 15:37:20,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 98.77777777777777) internal successors, (889), 9 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:20,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:20,962 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:20,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 15:37:20,962 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:20,963 INFO L85 PathProgramCache]: Analyzing trace with hash -235450433, now seen corresponding path program 4 times [2022-12-13 15:37:20,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:20,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096997881] [2022-12-13 15:37:20,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:20,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:21,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:21,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096997881] [2022-12-13 15:37:21,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096997881] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:21,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:21,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 15:37:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012750082] [2022-12-13 15:37:21,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:21,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 15:37:21,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:21,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 15:37:21,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:37:21,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 245 [2022-12-13 15:37:21,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 70 transitions, 899 flow. Second operand has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:21,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:21,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 245 [2022-12-13 15:37:21,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:21,922 INFO L130 PetriNetUnfolder]: 88/209 cut-off events. [2022-12-13 15:37:21,922 INFO L131 PetriNetUnfolder]: For 2115/2115 co-relation queries the response was YES. [2022-12-13 15:37:21,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1325 conditions, 209 events. 88/209 cut-off events. For 2115/2115 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 741 event pairs, 11 based on Foata normal form. 4/213 useless extension candidates. Maximal degree in co-relation 1292. Up to 57 conditions per place. [2022-12-13 15:37:21,923 INFO L137 encePairwiseOnDemand]: 236/245 looper letters, 48 selfloop transitions, 27 changer transitions 18/93 dead transitions. [2022-12-13 15:37:21,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 93 transitions, 1231 flow [2022-12-13 15:37:21,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:37:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 15:37:21,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 893 transitions. [2022-12-13 15:37:21,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4049886621315193 [2022-12-13 15:37:21,925 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 893 transitions. [2022-12-13 15:37:21,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 893 transitions. [2022-12-13 15:37:21,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:21,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 893 transitions. [2022-12-13 15:37:21,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.22222222222223) internal successors, (893), 9 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:21,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:21,927 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:21,927 INFO L175 Difference]: Start difference. First operand has 92 places, 70 transitions, 899 flow. Second operand 9 states and 893 transitions. [2022-12-13 15:37:21,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 93 transitions, 1231 flow [2022-12-13 15:37:21,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 1105 flow, removed 17 selfloop flow, removed 9 redundant places. [2022-12-13 15:37:21,932 INFO L231 Difference]: Finished difference. Result has 89 places, 60 transitions, 745 flow [2022-12-13 15:37:21,932 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=745, PETRI_PLACES=89, PETRI_TRANSITIONS=60} [2022-12-13 15:37:21,932 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 56 predicate places. [2022-12-13 15:37:21,932 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 60 transitions, 745 flow [2022-12-13 15:37:21,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.6) internal successors, (956), 10 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:21,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:37:21,933 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:21,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 15:37:21,933 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P1Err1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-13 15:37:21,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:37:21,933 INFO L85 PathProgramCache]: Analyzing trace with hash -224974913, now seen corresponding path program 5 times [2022-12-13 15:37:21,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:37:21,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747180009] [2022-12-13 15:37:21,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:37:21,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:37:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:37:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:37:22,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:37:22,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747180009] [2022-12-13 15:37:22,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747180009] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:37:22,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:37:22,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 15:37:22,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115693905] [2022-12-13 15:37:22,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:37:22,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:37:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:37:22,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:37:22,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:37:22,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 245 [2022-12-13 15:37:22,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 60 transitions, 745 flow. Second operand has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:22,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:37:22,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 245 [2022-12-13 15:37:22,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:37:22,765 INFO L130 PetriNetUnfolder]: 61/150 cut-off events. [2022-12-13 15:37:22,765 INFO L131 PetriNetUnfolder]: For 1437/1437 co-relation queries the response was YES. [2022-12-13 15:37:22,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 150 events. 61/150 cut-off events. For 1437/1437 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 495 event pairs, 7 based on Foata normal form. 8/158 useless extension candidates. Maximal degree in co-relation 920. Up to 79 conditions per place. [2022-12-13 15:37:22,766 INFO L137 encePairwiseOnDemand]: 239/245 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2022-12-13 15:37:22,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 64 transitions, 887 flow [2022-12-13 15:37:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:37:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 15:37:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 596 transitions. [2022-12-13 15:37:22,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4054421768707483 [2022-12-13 15:37:22,767 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 596 transitions. [2022-12-13 15:37:22,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 596 transitions. [2022-12-13 15:37:22,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:37:22,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 596 transitions. [2022-12-13 15:37:22,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.33333333333333) internal successors, (596), 6 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:22,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:22,769 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:22,769 INFO L175 Difference]: Start difference. First operand has 89 places, 60 transitions, 745 flow. Second operand 6 states and 596 transitions. [2022-12-13 15:37:22,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 64 transitions, 887 flow [2022-12-13 15:37:22,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 64 transitions, 710 flow, removed 5 selfloop flow, removed 19 redundant places. [2022-12-13 15:37:22,772 INFO L231 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2022-12-13 15:37:22,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=73, PETRI_TRANSITIONS=0} [2022-12-13 15:37:22,772 INFO L288 CegarLoopForPetriNet]: 33 programPoint places, 40 predicate places. [2022-12-13 15:37:22,772 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2022-12-13 15:37:22,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:37:22,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-12-13 15:37:22,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONMEMORY_LEAK (10 of 12 remaining) [2022-12-13 15:37:22,774 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-13 15:37:22,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-13 15:37:22,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-12-13 15:37:22,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-12-13 15:37:22,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (5 of 12 remaining) [2022-12-13 15:37:22,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (4 of 12 remaining) [2022-12-13 15:37:22,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2022-12-13 15:37:22,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2022-12-13 15:37:22,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 12 remaining) [2022-12-13 15:37:22,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONMEMORY_LEAK (0 of 12 remaining) [2022-12-13 15:37:22,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 15:37:22,776 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:37:22,780 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 15:37:22,780 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 15:37:22,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 03:37:22 BasicIcfg [2022-12-13 15:37:22,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 15:37:22,782 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 15:37:22,782 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 15:37:22,783 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 15:37:22,783 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:36:53" (3/4) ... [2022-12-13 15:37:22,785 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 15:37:22,788 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-12-13 15:37:22,788 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-12-13 15:37:22,792 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2022-12-13 15:37:22,792 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-12-13 15:37:22,793 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-13 15:37:22,793 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 15:37:22,826 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 15:37:22,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 15:37:22,827 INFO L158 Benchmark]: Toolchain (without parser) took 30488.16ms. Allocated memory was 119.5MB in the beginning and 272.6MB in the end (delta: 153.1MB). Free memory was 83.4MB in the beginning and 232.5MB in the end (delta: -149.2MB). Peak memory consumption was 165.8MB. Max. memory is 16.1GB. [2022-12-13 15:37:22,827 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 119.5MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 15:37:22,827 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.71ms. Allocated memory was 119.5MB in the beginning and 157.3MB in the end (delta: 37.7MB). Free memory was 83.0MB in the beginning and 125.6MB in the end (delta: -42.5MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. [2022-12-13 15:37:22,828 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.50ms. Allocated memory is still 157.3MB. Free memory was 125.5MB in the beginning and 124.7MB in the end (delta: 841.4kB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-12-13 15:37:22,828 INFO L158 Benchmark]: Boogie Preprocessor took 24.96ms. Allocated memory is still 157.3MB. Free memory was 124.7MB in the beginning and 122.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 15:37:22,828 INFO L158 Benchmark]: RCFGBuilder took 639.79ms. Allocated memory is still 157.3MB. Free memory was 122.6MB in the beginning and 103.8MB in the end (delta: 18.7MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2022-12-13 15:37:22,828 INFO L158 Benchmark]: TraceAbstraction took 29343.46ms. Allocated memory was 157.3MB in the beginning and 272.6MB in the end (delta: 115.3MB). Free memory was 102.8MB in the beginning and 75.3MB in the end (delta: 27.5MB). Peak memory consumption was 141.8MB. Max. memory is 16.1GB. [2022-12-13 15:37:22,829 INFO L158 Benchmark]: Witness Printer took 43.79ms. Allocated memory is still 272.6MB. Free memory was 75.3MB in the beginning and 232.5MB in the end (delta: -157.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 15:37:22,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 119.5MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.71ms. Allocated memory was 119.5MB in the beginning and 157.3MB in the end (delta: 37.7MB). Free memory was 83.0MB in the beginning and 125.6MB in the end (delta: -42.5MB). Peak memory consumption was 36.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.50ms. Allocated memory is still 157.3MB. Free memory was 125.5MB in the beginning and 124.7MB in the end (delta: 841.4kB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.96ms. Allocated memory is still 157.3MB. Free memory was 124.7MB in the beginning and 122.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 639.79ms. Allocated memory is still 157.3MB. Free memory was 122.6MB in the beginning and 103.8MB in the end (delta: 18.7MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. * TraceAbstraction took 29343.46ms. Allocated memory was 157.3MB in the beginning and 272.6MB in the end (delta: 115.3MB). Free memory was 102.8MB in the beginning and 75.3MB in the end (delta: 27.5MB). Peak memory consumption was 141.8MB. Max. memory is 16.1GB. * Witness Printer took 43.79ms. Allocated memory is still 272.6MB. Free memory was 75.3MB in the beginning and 232.5MB in the end (delta: -157.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 125 PlacesBefore, 33 PlacesAfterwards, 120 TransitionsBefore, 26 TransitionsAfterwards, 1612 CoEnabledTransitionPairs, 7 FixpointIterations, 66 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 123 TotalNumberOfCompositions, 4829 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1739, independent: 1542, independent conditional: 0, independent unconditional: 1542, dependent: 197, dependent conditional: 0, dependent unconditional: 197, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 862, independent: 816, independent conditional: 0, independent unconditional: 816, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1739, independent: 726, independent conditional: 0, independent unconditional: 726, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 862, unknown conditional: 0, unknown unconditional: 862] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, 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 - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 874]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 144 locations, 12 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: 29.3s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 9.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1688 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1369 mSDsluCounter, 1365 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1268 mSDsCounter, 701 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3640 IncrementalHoareTripleChecker+Invalid, 4341 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 701 mSolverCounterUnsat, 97 mSDtfsCounter, 3640 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2156occurred in iteration=20, InterpolantAutomatonStates: 172, 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, 14.1s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 312 ConstructedInterpolants, 0 QuantifiedInterpolants, 5652 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 15:37:22,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab5e126c-7b9a-47ec-bb77-e4d1d4926882/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE