./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/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_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/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_74ffa0dd-e028-4bca-9e78-d0e5837df041/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 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- 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 13:57:52,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:57:52,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:57:52,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:57:52,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:57:52,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:57:52,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:57:52,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:57:52,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:57:52,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:57:52,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:57:52,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:57:52,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:57:52,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:57:52,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:57:52,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:57:52,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:57:52,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:57:52,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:57:52,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:57:52,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:57:52,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:57:52,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:57:52,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:57:52,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:57:52,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:57:52,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:57:52,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:57:52,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:57:52,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:57:52,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:57:52,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:57:52,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:57:52,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:57:52,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:57:52,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:57:52,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:57:52,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:57:52,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:57:52,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:57:52,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:57:52,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 13:57:52,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:57:52,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:57:52,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:57:52,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:57:52,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:57:52,595 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:57:52,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:57:52,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:57:52,596 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:57:52,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:57:52,596 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:57:52,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:57:52,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:57:52,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:57:52,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:57:52,597 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 13:57:52,597 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 13:57:52,598 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 13:57:52,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:57:52,598 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 13:57:52,598 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:57:52,598 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:57:52,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:57:52,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:57:52,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:57:52,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:57:52,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:57:52,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:57:52,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:57:52,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:57:52,600 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:57:52,600 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:57:52,600 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:57:52,601 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:57:52,601 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_74ffa0dd-e028-4bca-9e78-d0e5837df041/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2022-12-13 13:57:52,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:57:52,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:57:52,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:57:52,836 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:57:52,836 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:57:52,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/triangular-2.i [2022-12-13 13:57:55,505 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:57:55,670 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:57:55,670 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/sv-benchmarks/c/pthread/triangular-2.i [2022-12-13 13:57:55,679 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/data/2178a3aca/3926353affe3458192b2b7e259d12f42/FLAG2400c2f4b [2022-12-13 13:57:55,690 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/data/2178a3aca/3926353affe3458192b2b7e259d12f42 [2022-12-13 13:57:55,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:57:55,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:57:55,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:57:55,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:57:55,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:57:55,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:57:55" (1/1) ... [2022-12-13 13:57:55,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4627ccdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:55, skipping insertion in model container [2022-12-13 13:57:55,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:57:55" (1/1) ... [2022-12-13 13:57:55,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:57:55,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:57:56,002 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:57:56,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:57:56,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:57:56,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:57:56,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:57:56,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:57:56,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:57:56,011 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:57:56,011 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_74ffa0dd-e028-4bca-9e78-d0e5837df041/sv-benchmarks/c/pthread/triangular-2.i[30952,30965] [2022-12-13 13:57:56,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:57:56,022 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:57:56,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:57:56,045 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:57:56,046 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:57:56,047 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:57:56,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:57:56,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:57:56,049 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:57:56,050 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:57:56,050 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_74ffa0dd-e028-4bca-9e78-d0e5837df041/sv-benchmarks/c/pthread/triangular-2.i[30952,30965] [2022-12-13 13:57:56,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:57:56,070 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:57:56,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:56 WrapperNode [2022-12-13 13:57:56,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:57:56,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:57:56,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:57:56,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:57:56,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:56" (1/1) ... [2022-12-13 13:57:56,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:56" (1/1) ... [2022-12-13 13:57:56,098 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-13 13:57:56,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:57:56,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:57:56,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:57:56,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:57:56,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:56" (1/1) ... [2022-12-13 13:57:56,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:56" (1/1) ... [2022-12-13 13:57:56,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:56" (1/1) ... [2022-12-13 13:57:56,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:56" (1/1) ... [2022-12-13 13:57:56,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:56" (1/1) ... [2022-12-13 13:57:56,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:56" (1/1) ... [2022-12-13 13:57:56,115 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:56" (1/1) ... [2022-12-13 13:57:56,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:56" (1/1) ... [2022-12-13 13:57:56,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:57:56,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:57:56,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:57:56,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:57:56,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:56" (1/1) ... [2022-12-13 13:57:56,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:57:56,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:56,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:57:56,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:57:56,175 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 13:57:56,175 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 13:57:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 13:57:56,176 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 13:57:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:57:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 13:57:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:57:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:57:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:57:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:57:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 13:57:56,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:57:56,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:57:56,177 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 13:57:56,269 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:57:56,271 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:57:56,406 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:57:56,410 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:57:56,410 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 13:57:56,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:57:56 BoogieIcfgContainer [2022-12-13 13:57:56,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:57:56,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:57:56,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:57:56,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:57:56,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:57:55" (1/3) ... [2022-12-13 13:57:56,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170a5fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:57:56, skipping insertion in model container [2022-12-13 13:57:56,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:56" (2/3) ... [2022-12-13 13:57:56,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@170a5fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:57:56, skipping insertion in model container [2022-12-13 13:57:56,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:57:56" (3/3) ... [2022-12-13 13:57:56,419 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2022-12-13 13:57:56,432 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:57:56,433 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 13:57:56,433 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:57:56,482 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 13:57:56,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 78 transitions, 166 flow [2022-12-13 13:57:56,540 INFO L130 PetriNetUnfolder]: 5/76 cut-off events. [2022-12-13 13:57:56,541 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:57:56,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 5/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 13:57:56,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 78 transitions, 166 flow [2022-12-13 13:57:56,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 76 transitions, 158 flow [2022-12-13 13:57:56,554 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:57:56,563 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 76 transitions, 158 flow [2022-12-13 13:57:56,566 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 76 transitions, 158 flow [2022-12-13 13:57:56,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 76 transitions, 158 flow [2022-12-13 13:57:56,587 INFO L130 PetriNetUnfolder]: 5/76 cut-off events. [2022-12-13 13:57:56,587 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:57:56,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 76 events. 5/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 13:57:56,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 1298 [2022-12-13 13:57:58,498 INFO L134 LiptonReduction]: Checked pairs total: 1200 [2022-12-13 13:57:58,499 INFO L136 LiptonReduction]: Total number of compositions: 74 [2022-12-13 13:57:58,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:57:58,513 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;@63e15ca7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:57:58,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-13 13:57:58,514 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 13:57:58,515 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:57:58,515 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:57:58,515 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 13:57:58,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:57:58,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:58,519 INFO L85 PathProgramCache]: Analyzing trace with hash 305, now seen corresponding path program 1 times [2022-12-13 13:57:58,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:58,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409827939] [2022-12-13 13:57:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:58,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:58,598 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 13:57:58,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:58,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409827939] [2022-12-13 13:57:58,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409827939] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:58,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:58,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 13:57:58,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264799804] [2022-12-13 13:57:58,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:58,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:57:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:58,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:57:58,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:57:58,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 152 [2022-12-13 13:57:58,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 42 flow. Second operand has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:58,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:57:58,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 152 [2022-12-13 13:57:58,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:57:58,669 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2022-12-13 13:57:58,669 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 13:57:58,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 385 event pairs, 60 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 306. Up to 153 conditions per place. [2022-12-13 13:57:58,671 INFO L137 encePairwiseOnDemand]: 150/152 looper letters, 15 selfloop transitions, 0 changer transitions 1/16 dead transitions. [2022-12-13 13:57:58,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 16 transitions, 70 flow [2022-12-13 13:57:58,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:57:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 13:57:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 162 transitions. [2022-12-13 13:57:58,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5328947368421053 [2022-12-13 13:57:58,684 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 162 transitions. [2022-12-13 13:57:58,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 162 transitions. [2022-12-13 13:57:58,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:57:58,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 162 transitions. [2022-12-13 13:57:58,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 81.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:58,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:58,694 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:58,696 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 42 flow. Second operand 2 states and 162 transitions. [2022-12-13 13:57:58,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 16 transitions, 70 flow [2022-12-13 13:57:58,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 68 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:57:58,700 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 34 flow [2022-12-13 13:57:58,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2022-12-13 13:57:58,704 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2022-12-13 13:57:58,704 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 34 flow [2022-12-13 13:57:58,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 72.5) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:58,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:57:58,705 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 13:57:58,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:57:58,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:57:58,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:58,706 INFO L85 PathProgramCache]: Analyzing trace with hash 298668, now seen corresponding path program 1 times [2022-12-13 13:57:58,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:58,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625874489] [2022-12-13 13:57:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:58,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:58,818 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 13:57:58,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:58,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625874489] [2022-12-13 13:57:58,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625874489] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:58,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:58,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:57:58,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446420014] [2022-12-13 13:57:58,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:58,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:57:58,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:58,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:57:58,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:57:58,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 13:57:58,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:58,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:57:58,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 13:57:58,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:57:58,888 INFO L130 PetriNetUnfolder]: 73/119 cut-off events. [2022-12-13 13:57:58,888 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:57:58,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 119 events. 73/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 281 event pairs, 34 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 246. Up to 92 conditions per place. [2022-12-13 13:57:58,890 INFO L137 encePairwiseOnDemand]: 149/152 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2022-12-13 13:57:58,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 84 flow [2022-12-13 13:57:58,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:57:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:57:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 216 transitions. [2022-12-13 13:57:58,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2022-12-13 13:57:58,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 216 transitions. [2022-12-13 13:57:58,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 216 transitions. [2022-12-13 13:57:58,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:57:58,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 216 transitions. [2022-12-13 13:57:58,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:58,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:58,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:58,896 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 34 flow. Second operand 3 states and 216 transitions. [2022-12-13 13:57:58,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 84 flow [2022-12-13 13:57:58,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:57:58,897 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2022-12-13 13:57:58,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2022-12-13 13:57:58,902 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2022-12-13 13:57:58,902 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2022-12-13 13:57:58,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:58,902 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:57:58,903 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 13:57:58,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:57:58,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:57:58,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:58,904 INFO L85 PathProgramCache]: Analyzing trace with hash 298669, now seen corresponding path program 1 times [2022-12-13 13:57:58,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:58,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925508521] [2022-12-13 13:57:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:58,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:59,011 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 13:57:59,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:59,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925508521] [2022-12-13 13:57:59,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925508521] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:59,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:59,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:57:59,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133082647] [2022-12-13 13:57:59,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:59,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:57:59,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:59,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:57:59,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:57:59,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 152 [2022-12-13 13:57:59,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:57:59,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 152 [2022-12-13 13:57:59,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:57:59,072 INFO L130 PetriNetUnfolder]: 70/113 cut-off events. [2022-12-13 13:57:59,072 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 13:57:59,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 113 events. 70/113 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 257 event pairs, 32 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 244. Up to 86 conditions per place. [2022-12-13 13:57:59,073 INFO L137 encePairwiseOnDemand]: 149/152 looper letters, 17 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2022-12-13 13:57:59,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 84 flow [2022-12-13 13:57:59,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:57:59,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:57:59,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2022-12-13 13:57:59,075 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2022-12-13 13:57:59,075 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 224 transitions. [2022-12-13 13:57:59,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 224 transitions. [2022-12-13 13:57:59,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:57:59,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 224 transitions. [2022-12-13 13:57:59,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,078 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,078 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 3 states and 224 transitions. [2022-12-13 13:57:59,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 84 flow [2022-12-13 13:57:59,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:57:59,079 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 34 flow [2022-12-13 13:57:59,080 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2022-12-13 13:57:59,080 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, -4 predicate places. [2022-12-13 13:57:59,080 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 34 flow [2022-12-13 13:57:59,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,081 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:57:59,081 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 13:57:59,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:57:59,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:57:59,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:59,082 INFO L85 PathProgramCache]: Analyzing trace with hash 307853827, now seen corresponding path program 1 times [2022-12-13 13:57:59,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:59,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427189240] [2022-12-13 13:57:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:59,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:59,248 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 13:57:59,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:59,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427189240] [2022-12-13 13:57:59,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427189240] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:59,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:59,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:57:59,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94692862] [2022-12-13 13:57:59,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:59,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:57:59,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:59,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:57:59,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:57:59,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 152 [2022-12-13 13:57:59,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:57:59,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 152 [2022-12-13 13:57:59,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:57:59,304 INFO L130 PetriNetUnfolder]: 52/86 cut-off events. [2022-12-13 13:57:59,304 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 13:57:59,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 86 events. 52/86 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 167 event pairs, 32 based on Foata normal form. 9/75 useless extension candidates. Maximal degree in co-relation 181. Up to 86 conditions per place. [2022-12-13 13:57:59,305 INFO L137 encePairwiseOnDemand]: 150/152 looper letters, 11 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2022-12-13 13:57:59,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 54 flow [2022-12-13 13:57:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:57:59,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:57:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2022-12-13 13:57:59,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46271929824561403 [2022-12-13 13:57:59,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2022-12-13 13:57:59,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2022-12-13 13:57:59,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:57:59,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2022-12-13 13:57:59,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 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 13:57:59,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,310 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 34 flow. Second operand 3 states and 211 transitions. [2022-12-13 13:57:59,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 54 flow [2022-12-13 13:57:59,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 53 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:57:59,311 INFO L231 Difference]: Finished difference. Result has 19 places, 12 transitions, 31 flow [2022-12-13 13:57:59,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=31, PETRI_PLACES=19, PETRI_TRANSITIONS=12} [2022-12-13 13:57:59,312 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, -4 predicate places. [2022-12-13 13:57:59,312 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 12 transitions, 31 flow [2022-12-13 13:57:59,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:57:59,312 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 13:57:59,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:57:59,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:57:59,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:59,313 INFO L85 PathProgramCache]: Analyzing trace with hash 307853801, now seen corresponding path program 1 times [2022-12-13 13:57:59,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:59,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290627167] [2022-12-13 13:57:59,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:59,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:59,402 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 13:57:59,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:59,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290627167] [2022-12-13 13:57:59,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290627167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:59,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:59,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:57:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019433014] [2022-12-13 13:57:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:59,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:57:59,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:57:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:57:59,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 152 [2022-12-13 13:57:59,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 31 flow. Second operand has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:57:59,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 152 [2022-12-13 13:57:59,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:57:59,469 INFO L130 PetriNetUnfolder]: 64/107 cut-off events. [2022-12-13 13:57:59,469 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:57:59,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 107 events. 64/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 232 event pairs, 11 based on Foata normal form. 9/87 useless extension candidates. Maximal degree in co-relation 224. Up to 55 conditions per place. [2022-12-13 13:57:59,471 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 18 selfloop transitions, 4 changer transitions 2/24 dead transitions. [2022-12-13 13:57:59,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 103 flow [2022-12-13 13:57:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:57:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:57:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 289 transitions. [2022-12-13 13:57:59,473 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4753289473684211 [2022-12-13 13:57:59,473 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 289 transitions. [2022-12-13 13:57:59,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 289 transitions. [2022-12-13 13:57:59,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:57:59,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 289 transitions. [2022-12-13 13:57:59,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,479 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,479 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 31 flow. Second operand 4 states and 289 transitions. [2022-12-13 13:57:59,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 103 flow [2022-12-13 13:57:59,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:57:59,480 INFO L231 Difference]: Finished difference. Result has 23 places, 15 transitions, 55 flow [2022-12-13 13:57:59,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=55, PETRI_PLACES=23, PETRI_TRANSITIONS=15} [2022-12-13 13:57:59,481 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2022-12-13 13:57:59,481 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 15 transitions, 55 flow [2022-12-13 13:57:59,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.5) internal successors, (270), 4 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,482 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:57:59,482 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:59,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:57:59,482 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:57:59,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:59,482 INFO L85 PathProgramCache]: Analyzing trace with hash -505601409, now seen corresponding path program 1 times [2022-12-13 13:57:59,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:59,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831080251] [2022-12-13 13:57:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:59,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:59,559 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 13:57:59,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:59,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831080251] [2022-12-13 13:57:59,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831080251] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:59,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:59,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:57:59,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543414246] [2022-12-13 13:57:59,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:59,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:57:59,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:59,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:57:59,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:57:59,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 13:57:59,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 15 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:57:59,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 13:57:59,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:57:59,645 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2022-12-13 13:57:59,645 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-12-13 13:57:59,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 217 events. 126/217 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 662 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 544. Up to 89 conditions per place. [2022-12-13 13:57:59,647 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2022-12-13 13:57:59,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 42 transitions, 217 flow [2022-12-13 13:57:59,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:57:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:57:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 428 transitions. [2022-12-13 13:57:59,649 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4692982456140351 [2022-12-13 13:57:59,650 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 428 transitions. [2022-12-13 13:57:59,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 428 transitions. [2022-12-13 13:57:59,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:57:59,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 428 transitions. [2022-12-13 13:57:59,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 71.33333333333333) internal successors, (428), 6 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 13:57:59,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,656 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 152.0) internal successors, (1064), 7 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,656 INFO L175 Difference]: Start difference. First operand has 23 places, 15 transitions, 55 flow. Second operand 6 states and 428 transitions. [2022-12-13 13:57:59,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 42 transitions, 217 flow [2022-12-13 13:57:59,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 42 transitions, 217 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:57:59,659 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 136 flow [2022-12-13 13:57:59,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2022-12-13 13:57:59,660 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 9 predicate places. [2022-12-13 13:57:59,660 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 136 flow [2022-12-13 13:57:59,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:57:59,661 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:59,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 13:57:59,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:57:59,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:59,661 INFO L85 PathProgramCache]: Analyzing trace with hash -505580949, now seen corresponding path program 2 times [2022-12-13 13:57:59,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:59,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889480978] [2022-12-13 13:57:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:59,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:59,749 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 13:57:59,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:59,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889480978] [2022-12-13 13:57:59,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889480978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:59,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:59,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:57:59,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98097057] [2022-12-13 13:57:59,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:59,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:57:59,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:59,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:57:59,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:57:59,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 13:57:59,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:57:59,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 13:57:59,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:57:59,860 INFO L130 PetriNetUnfolder]: 126/219 cut-off events. [2022-12-13 13:57:59,860 INFO L131 PetriNetUnfolder]: For 288/288 co-relation queries the response was YES. [2022-12-13 13:57:59,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 219 events. 126/219 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 682 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 714. Up to 87 conditions per place. [2022-12-13 13:57:59,863 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 29 selfloop transitions, 15 changer transitions 8/52 dead transitions. [2022-12-13 13:57:59,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 52 transitions, 350 flow [2022-12-13 13:57:59,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:57:59,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 13:57:59,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 497 transitions. [2022-12-13 13:57:59,866 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46710526315789475 [2022-12-13 13:57:59,866 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 497 transitions. [2022-12-13 13:57:59,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 497 transitions. [2022-12-13 13:57:59,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:57:59,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 497 transitions. [2022-12-13 13:57:59,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.0) internal successors, (497), 7 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,872 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,872 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 136 flow. Second operand 7 states and 497 transitions. [2022-12-13 13:57:59,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 52 transitions, 350 flow [2022-12-13 13:57:59,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 346 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 13:57:59,877 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 242 flow [2022-12-13 13:57:59,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=242, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2022-12-13 13:57:59,878 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 19 predicate places. [2022-12-13 13:57:59,878 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 242 flow [2022-12-13 13:57:59,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.6) internal successors, (333), 5 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,878 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:57:59,878 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:59,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 13:57:59,879 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:57:59,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:59,879 INFO L85 PathProgramCache]: Analyzing trace with hash -358334354, now seen corresponding path program 1 times [2022-12-13 13:57:59,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:59,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656874196] [2022-12-13 13:57:59,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:59,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:57:59,976 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 13:57:59,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:57:59,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656874196] [2022-12-13 13:57:59,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656874196] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:57:59,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:57:59,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:57:59,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549300688] [2022-12-13 13:57:59,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:57:59,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:57:59,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:57:59,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:57:59,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:57:59,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 13:57:59,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:57:59,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:57:59,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 13:57:59,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:00,106 INFO L130 PetriNetUnfolder]: 162/283 cut-off events. [2022-12-13 13:58:00,106 INFO L131 PetriNetUnfolder]: For 817/817 co-relation queries the response was YES. [2022-12-13 13:58:00,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 283 events. 162/283 cut-off events. For 817/817 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 950 event pairs, 16 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1069. Up to 71 conditions per place. [2022-12-13 13:58:00,107 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 37 selfloop transitions, 21 changer transitions 3/61 dead transitions. [2022-12-13 13:58:00,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 490 flow [2022-12-13 13:58:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:58:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 13:58:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 566 transitions. [2022-12-13 13:58:00,109 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4654605263157895 [2022-12-13 13:58:00,109 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 566 transitions. [2022-12-13 13:58:00,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 566 transitions. [2022-12-13 13:58:00,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:00,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 566 transitions. [2022-12-13 13:58:00,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.75) internal successors, (566), 8 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,111 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,112 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 242 flow. Second operand 8 states and 566 transitions. [2022-12-13 13:58:00,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 490 flow [2022-12-13 13:58:00,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 469 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-12-13 13:58:00,115 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 348 flow [2022-12-13 13:58:00,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=348, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2022-12-13 13:58:00,116 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 29 predicate places. [2022-12-13 13:58:00,116 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 348 flow [2022-12-13 13:58:00,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:00,116 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:00,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 13:58:00,116 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:00,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:00,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1478301256, now seen corresponding path program 2 times [2022-12-13 13:58:00,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:00,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518874583] [2022-12-13 13:58:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:00,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:00,184 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 13:58:00,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:00,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518874583] [2022-12-13 13:58:00,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518874583] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:00,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:00,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:58:00,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140206127] [2022-12-13 13:58:00,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:00,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:58:00,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:58:00,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:58:00,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 13:58:00,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:00,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 13:58:00,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:00,317 INFO L130 PetriNetUnfolder]: 154/271 cut-off events. [2022-12-13 13:58:00,317 INFO L131 PetriNetUnfolder]: For 1323/1323 co-relation queries the response was YES. [2022-12-13 13:58:00,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 271 events. 154/271 cut-off events. For 1323/1323 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 927 event pairs, 22 based on Foata normal form. 8/279 useless extension candidates. Maximal degree in co-relation 1191. Up to 67 conditions per place. [2022-12-13 13:58:00,319 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 30 selfloop transitions, 21 changer transitions 8/59 dead transitions. [2022-12-13 13:58:00,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 578 flow [2022-12-13 13:58:00,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:58:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 13:58:00,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 495 transitions. [2022-12-13 13:58:00,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46522556390977443 [2022-12-13 13:58:00,320 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 495 transitions. [2022-12-13 13:58:00,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 495 transitions. [2022-12-13 13:58:00,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:00,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 495 transitions. [2022-12-13 13:58:00,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.71428571428571) internal successors, (495), 7 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,323 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,323 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 348 flow. Second operand 7 states and 495 transitions. [2022-12-13 13:58:00,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 578 flow [2022-12-13 13:58:00,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 59 transitions, 539 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-13 13:58:00,327 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 400 flow [2022-12-13 13:58:00,328 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2022-12-13 13:58:00,328 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 33 predicate places. [2022-12-13 13:58:00,328 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 400 flow [2022-12-13 13:58:00,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,328 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:00,328 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:00,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 13:58:00,329 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:00,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:00,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1417274535, now seen corresponding path program 3 times [2022-12-13 13:58:00,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:00,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465257868] [2022-12-13 13:58:00,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:00,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:00,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:00,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465257868] [2022-12-13 13:58:00,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465257868] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:00,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715397668] [2022-12-13 13:58:00,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:58:00,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:00,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:00,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:00,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:58:00,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 13:58:00,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:00,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 13:58:00,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:00,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:00,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715397668] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:00,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:58:00,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-13 13:58:00,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267570938] [2022-12-13 13:58:00,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:00,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 13:58:00,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:00,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 13:58:00,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:58:00,697 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 13:58:00,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 400 flow. Second operand has 13 states, 13 states have (on average 66.84615384615384) internal successors, (869), 13 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:00,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 13:58:00,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:00,943 INFO L130 PetriNetUnfolder]: 202/351 cut-off events. [2022-12-13 13:58:00,943 INFO L131 PetriNetUnfolder]: For 2205/2205 co-relation queries the response was YES. [2022-12-13 13:58:00,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 351 events. 202/351 cut-off events. For 2205/2205 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1211 event pairs, 18 based on Foata normal form. 16/367 useless extension candidates. Maximal degree in co-relation 1659. Up to 87 conditions per place. [2022-12-13 13:58:00,946 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 34 selfloop transitions, 36 changer transitions 22/92 dead transitions. [2022-12-13 13:58:00,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 92 transitions, 960 flow [2022-12-13 13:58:00,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 13:58:00,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 13:58:00,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 984 transitions. [2022-12-13 13:58:00,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.462406015037594 [2022-12-13 13:58:00,950 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 984 transitions. [2022-12-13 13:58:00,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 984 transitions. [2022-12-13 13:58:00,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:00,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 984 transitions. [2022-12-13 13:58:00,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 70.28571428571429) internal successors, (984), 14 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,957 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,957 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 400 flow. Second operand 14 states and 984 transitions. [2022-12-13 13:58:00,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 92 transitions, 960 flow [2022-12-13 13:58:00,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 92 transitions, 895 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-12-13 13:58:00,964 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 703 flow [2022-12-13 13:58:00,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=703, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2022-12-13 13:58:00,965 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 45 predicate places. [2022-12-13 13:58:00,965 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 703 flow [2022-12-13 13:58:00,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 66.84615384615384) internal successors, (869), 13 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:00,966 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:00,966 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:00,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:58:01,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:01,167 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:01,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1090632032, now seen corresponding path program 4 times [2022-12-13 13:58:01,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:01,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597835533] [2022-12-13 13:58:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:01,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:01,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:01,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597835533] [2022-12-13 13:58:01,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597835533] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:01,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750972660] [2022-12-13 13:58:01,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:58:01,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:01,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:01,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:01,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:58:01,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:58:01,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:01,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 13:58:01,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:01,376 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:01,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:01,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750972660] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:01,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:58:01,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-12-13 13:58:01,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171901469] [2022-12-13 13:58:01,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:01,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 13:58:01,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:01,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 13:58:01,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:58:01,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 13:58:01,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 703 flow. Second operand has 16 states, 16 states have (on average 66.75) internal successors, (1068), 16 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:01,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:01,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 13:58:01,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:01,759 INFO L130 PetriNetUnfolder]: 258/463 cut-off events. [2022-12-13 13:58:01,759 INFO L131 PetriNetUnfolder]: For 4310/4310 co-relation queries the response was YES. [2022-12-13 13:58:01,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 463 events. 258/463 cut-off events. For 4310/4310 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1657 event pairs, 55 based on Foata normal form. 32/495 useless extension candidates. Maximal degree in co-relation 2423. Up to 237 conditions per place. [2022-12-13 13:58:01,761 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 64 selfloop transitions, 27 changer transitions 27/118 dead transitions. [2022-12-13 13:58:01,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 118 transitions, 1471 flow [2022-12-13 13:58:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 13:58:01,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 13:58:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1123 transitions. [2022-12-13 13:58:01,763 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46175986842105265 [2022-12-13 13:58:01,763 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1123 transitions. [2022-12-13 13:58:01,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1123 transitions. [2022-12-13 13:58:01,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:01,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1123 transitions. [2022-12-13 13:58:01,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 70.1875) internal successors, (1123), 16 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:01,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 152.0) internal successors, (2584), 17 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:01,767 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 152.0) internal successors, (2584), 17 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:01,768 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 703 flow. Second operand 16 states and 1123 transitions. [2022-12-13 13:58:01,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 118 transitions, 1471 flow [2022-12-13 13:58:01,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 118 transitions, 1112 flow, removed 167 selfloop flow, removed 5 redundant places. [2022-12-13 13:58:01,776 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 783 flow [2022-12-13 13:58:01,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=783, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2022-12-13 13:58:01,776 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 65 predicate places. [2022-12-13 13:58:01,777 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 783 flow [2022-12-13 13:58:01,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.75) internal successors, (1068), 16 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:01,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:01,777 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:01,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:58:01,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:01,979 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:01,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:01,980 INFO L85 PathProgramCache]: Analyzing trace with hash 546245172, now seen corresponding path program 5 times [2022-12-13 13:58:01,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:01,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666927921] [2022-12-13 13:58:01,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:01,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:02,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:02,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666927921] [2022-12-13 13:58:02,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666927921] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:02,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249913767] [2022-12-13 13:58:02,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:58:02,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:02,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:02,206 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:02,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:58:02,260 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-13 13:58:02,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:02,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 13:58:02,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:02,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:02,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:02,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249913767] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:02,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:58:02,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-13 13:58:02,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140212382] [2022-12-13 13:58:02,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:02,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 13:58:02,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:02,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 13:58:02,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:58:02,506 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 13:58:02,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 783 flow. Second operand has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:02,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:02,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 13:58:02,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:02,936 INFO L130 PetriNetUnfolder]: 412/755 cut-off events. [2022-12-13 13:58:02,936 INFO L131 PetriNetUnfolder]: For 12130/12130 co-relation queries the response was YES. [2022-12-13 13:58:02,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4022 conditions, 755 events. 412/755 cut-off events. For 12130/12130 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3351 event pairs, 44 based on Foata normal form. 32/787 useless extension candidates. Maximal degree in co-relation 3988. Up to 227 conditions per place. [2022-12-13 13:58:02,940 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 73 selfloop transitions, 72 changer transitions 37/182 dead transitions. [2022-12-13 13:58:02,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 182 transitions, 2103 flow [2022-12-13 13:58:02,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 13:58:02,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 13:58:02,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1544 transitions. [2022-12-13 13:58:02,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2022-12-13 13:58:02,943 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1544 transitions. [2022-12-13 13:58:02,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1544 transitions. [2022-12-13 13:58:02,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:02,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1544 transitions. [2022-12-13 13:58:02,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 70.18181818181819) internal successors, (1544), 22 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:02,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:02,948 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:02,948 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 783 flow. Second operand 22 states and 1544 transitions. [2022-12-13 13:58:02,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 182 transitions, 2103 flow [2022-12-13 13:58:02,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 182 transitions, 1982 flow, removed 51 selfloop flow, removed 4 redundant places. [2022-12-13 13:58:02,969 INFO L231 Difference]: Finished difference. Result has 119 places, 108 transitions, 1492 flow [2022-12-13 13:58:02,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1492, PETRI_PLACES=119, PETRI_TRANSITIONS=108} [2022-12-13 13:58:02,969 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 96 predicate places. [2022-12-13 13:58:02,969 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 108 transitions, 1492 flow [2022-12-13 13:58:02,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:02,970 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:02,970 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:02,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:58:03,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 13:58:03,170 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:03,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:03,171 INFO L85 PathProgramCache]: Analyzing trace with hash -545058144, now seen corresponding path program 6 times [2022-12-13 13:58:03,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:03,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087142924] [2022-12-13 13:58:03,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:03,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:03,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:03,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:03,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087142924] [2022-12-13 13:58:03,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087142924] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:03,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151946965] [2022-12-13 13:58:03,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 13:58:03,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:03,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:03,263 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:03,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:58:03,326 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-13 13:58:03,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:03,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 13:58:03,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:03,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:03,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:03,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:03,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151946965] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:03,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:58:03,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-13 13:58:03,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836363024] [2022-12-13 13:58:03,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:03,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 13:58:03,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:03,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 13:58:03,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:58:03,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 13:58:03,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 108 transitions, 1492 flow. Second operand has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:03,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:03,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 13:58:03,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:04,098 INFO L130 PetriNetUnfolder]: 576/1035 cut-off events. [2022-12-13 13:58:04,098 INFO L131 PetriNetUnfolder]: For 31811/31811 co-relation queries the response was YES. [2022-12-13 13:58:04,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7177 conditions, 1035 events. 576/1035 cut-off events. For 31811/31811 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4838 event pairs, 20 based on Foata normal form. 32/1067 useless extension candidates. Maximal degree in co-relation 7128. Up to 327 conditions per place. [2022-12-13 13:58:04,107 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 61 selfloop transitions, 128 changer transitions 48/237 dead transitions. [2022-12-13 13:58:04,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 237 transitions, 3608 flow [2022-12-13 13:58:04,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 13:58:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-13 13:58:04,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1895 transitions. [2022-12-13 13:58:04,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46174463937621835 [2022-12-13 13:58:04,112 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1895 transitions. [2022-12-13 13:58:04,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1895 transitions. [2022-12-13 13:58:04,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:04,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1895 transitions. [2022-12-13 13:58:04,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 70.18518518518519) internal successors, (1895), 27 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:04,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:04,125 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:04,126 INFO L175 Difference]: Start difference. First operand has 119 places, 108 transitions, 1492 flow. Second operand 27 states and 1895 transitions. [2022-12-13 13:58:04,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 237 transitions, 3608 flow [2022-12-13 13:58:04,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 237 transitions, 3302 flow, removed 143 selfloop flow, removed 4 redundant places. [2022-12-13 13:58:04,173 INFO L231 Difference]: Finished difference. Result has 156 places, 150 transitions, 2484 flow [2022-12-13 13:58:04,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2484, PETRI_PLACES=156, PETRI_TRANSITIONS=150} [2022-12-13 13:58:04,174 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 133 predicate places. [2022-12-13 13:58:04,174 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 150 transitions, 2484 flow [2022-12-13 13:58:04,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:04,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:04,174 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:04,179 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:58:04,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 13:58:04,375 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:04,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1796887687, now seen corresponding path program 7 times [2022-12-13 13:58:04,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:04,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020026413] [2022-12-13 13:58:04,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:04,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:04,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:58:04,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020026413] [2022-12-13 13:58:04,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020026413] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:58:04,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226216508] [2022-12-13 13:58:04,578 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 13:58:04,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:58:04,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:04,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:58:04,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:58:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:04,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 13:58:04,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:04,686 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:04,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:04,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226216508] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:04,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:58:04,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2022-12-13 13:58:04,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488235488] [2022-12-13 13:58:04,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:04,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 13:58:04,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:58:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 13:58:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:58:04,806 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2022-12-13 13:58:04,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 150 transitions, 2484 flow. Second operand has 16 states, 16 states have (on average 66.375) internal successors, (1062), 16 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:04,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:04,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2022-12-13 13:58:04,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:05,316 INFO L130 PetriNetUnfolder]: 628/1123 cut-off events. [2022-12-13 13:58:05,316 INFO L131 PetriNetUnfolder]: For 47674/47674 co-relation queries the response was YES. [2022-12-13 13:58:05,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9516 conditions, 1123 events. 628/1123 cut-off events. For 47674/47674 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5247 event pairs, 40 based on Foata normal form. 4/1127 useless extension candidates. Maximal degree in co-relation 9452. Up to 350 conditions per place. [2022-12-13 13:58:05,323 INFO L137 encePairwiseOnDemand]: 147/152 looper letters, 65 selfloop transitions, 124 changer transitions 34/223 dead transitions. [2022-12-13 13:58:05,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 223 transitions, 4230 flow [2022-12-13 13:58:05,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 13:58:05,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 13:58:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1398 transitions. [2022-12-13 13:58:05,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4598684210526316 [2022-12-13 13:58:05,325 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1398 transitions. [2022-12-13 13:58:05,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1398 transitions. [2022-12-13 13:58:05,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:05,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1398 transitions. [2022-12-13 13:58:05,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 69.9) internal successors, (1398), 20 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:05,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:05,329 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:05,330 INFO L175 Difference]: Start difference. First operand has 156 places, 150 transitions, 2484 flow. Second operand 20 states and 1398 transitions. [2022-12-13 13:58:05,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 223 transitions, 4230 flow [2022-12-13 13:58:05,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 223 transitions, 3259 flow, removed 460 selfloop flow, removed 10 redundant places. [2022-12-13 13:58:05,424 INFO L231 Difference]: Finished difference. Result has 173 places, 166 transitions, 2525 flow [2022-12-13 13:58:05,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2525, PETRI_PLACES=173, PETRI_TRANSITIONS=166} [2022-12-13 13:58:05,424 INFO L288 CegarLoopForPetriNet]: 23 programPoint places, 150 predicate places. [2022-12-13 13:58:05,424 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 166 transitions, 2525 flow [2022-12-13 13:58:05,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.375) internal successors, (1062), 16 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:05,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:05,425 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:05,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:58:05,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 13:58:05,626 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:05,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1694461196, now seen corresponding path program 8 times [2022-12-13 13:58:05,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:58:05,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142208074] [2022-12-13 13:58:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:05,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:58:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:58:05,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:58:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:58:05,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 13:58:05,660 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:58:05,661 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2022-12-13 13:58:05,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2022-12-13 13:58:05,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2022-12-13 13:58:05,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2022-12-13 13:58:05,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2022-12-13 13:58:05,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2022-12-13 13:58:05,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-12-13 13:58:05,663 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-12-13 13:58:05,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 13:58:05,663 INFO L445 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1, 1, 1, 1] [2022-12-13 13:58:05,667 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 13:58:05,667 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:58:05,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:58:05 BasicIcfg [2022-12-13 13:58:05,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:58:05,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:58:05,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:58:05,691 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:58:05,691 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:57:56" (3/4) ... [2022-12-13 13:58:05,693 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 13:58:05,693 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:58:05,693 INFO L158 Benchmark]: Toolchain (without parser) took 10000.01ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 95.2MB in the beginning and 112.8MB in the end (delta: -17.7MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-12-13 13:58:05,694 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 132.1MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:58:05,694 INFO L158 Benchmark]: CACSL2BoogieTranslator took 376.19ms. Allocated memory is still 132.1MB. Free memory was 95.2MB in the beginning and 75.2MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 13:58:05,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.77ms. Allocated memory is still 132.1MB. Free memory was 74.8MB in the beginning and 73.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:58:05,694 INFO L158 Benchmark]: Boogie Preprocessor took 18.36ms. Allocated memory is still 132.1MB. Free memory was 73.1MB in the beginning and 71.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:58:05,694 INFO L158 Benchmark]: RCFGBuilder took 294.20ms. Allocated memory is still 132.1MB. Free memory was 71.8MB in the beginning and 58.2MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 13:58:05,694 INFO L158 Benchmark]: TraceAbstraction took 9275.98ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 57.9MB in the beginning and 112.8MB in the end (delta: -54.9MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. [2022-12-13 13:58:05,695 INFO L158 Benchmark]: Witness Printer took 2.81ms. Allocated memory is still 159.4MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:58:05,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 132.1MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 376.19ms. Allocated memory is still 132.1MB. Free memory was 95.2MB in the beginning and 75.2MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.77ms. Allocated memory is still 132.1MB. Free memory was 74.8MB in the beginning and 73.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.36ms. Allocated memory is still 132.1MB. Free memory was 73.1MB in the beginning and 71.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 294.20ms. Allocated memory is still 132.1MB. Free memory was 71.8MB in the beginning and 58.2MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9275.98ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 57.9MB in the beginning and 112.8MB in the end (delta: -54.9MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. * Witness Printer took 2.81ms. Allocated memory is still 159.4MB. Free memory is still 112.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 78 PlacesBefore, 23 PlacesAfterwards, 76 TransitionsBefore, 18 TransitionsAfterwards, 1298 CoEnabledTransitionPairs, 5 FixpointIterations, 28 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 74 TotalNumberOfCompositions, 1200 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 978, independent: 946, independent conditional: 0, independent unconditional: 946, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 693, independent: 677, independent conditional: 0, independent unconditional: 677, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 978, independent: 269, independent conditional: 0, independent unconditional: 269, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 693, unknown conditional: 0, unknown unconditional: 693] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=3, id1={3:0}, id2={5:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=1] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=7, id1={3:0}, id2={5:0}, j=6, k=1, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*5 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, i=7, id1={3:0}, id2={5:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L719] 0 int condJ = j >= (2*5 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, condI=0, condJ=1, i=15, id1={3:0}, id2={5:0}, j=16, k=5, k=5] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 96 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.2s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1424 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1273 mSDsluCounter, 304 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 264 mSDsCounter, 200 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2043 IncrementalHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 200 mSolverCounterUnsat, 40 mSDtfsCounter, 2043 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 277 GetRequests, 89 SyntacticMatches, 9 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2525occurred in iteration=14, InterpolantAutomatonStates: 142, 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, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 213 NumberOfCodeBlocks, 213 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 1103 SizeOfPredicates, 27 NumberOfNonLiveVariables, 725 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 9/114 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 13:58:05,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/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_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/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 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- 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 13:58:07,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:58:07,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:58:07,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:58:07,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:58:07,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:58:07,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:58:07,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:58:07,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:58:07,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:58:07,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:58:07,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:58:07,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:58:07,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:58:07,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:58:07,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:58:07,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:58:07,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:58:07,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:58:07,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:58:07,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:58:07,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:58:07,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:58:07,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:58:07,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:58:07,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:58:07,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:58:07,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:58:07,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:58:07,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:58:07,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:58:07,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:58:07,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:58:07,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:58:07,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:58:07,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:58:07,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:58:07,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:58:07,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:58:07,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:58:07,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:58:07,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 13:58:07,389 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:58:07,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:58:07,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:58:07,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:58:07,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:58:07,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:58:07,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:58:07,392 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:58:07,392 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:58:07,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:58:07,392 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:58:07,392 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:58:07,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:58:07,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:58:07,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:58:07,393 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 13:58:07,393 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 13:58:07,393 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 13:58:07,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:58:07,393 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 13:58:07,393 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 13:58:07,393 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 13:58:07,393 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:58:07,394 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:58:07,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:58:07,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:58:07,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:58:07,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:58:07,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:58:07,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:58:07,394 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 13:58:07,395 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 13:58:07,395 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:58:07,395 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:58:07,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:58:07,395 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 13:58:07,395 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:58:07,395 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_74ffa0dd-e028-4bca-9e78-d0e5837df041/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2022-12-13 13:58:07,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:58:07,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:58:07,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:58:07,609 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:58:07,609 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:58:07,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/triangular-2.i [2022-12-13 13:58:10,208 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:58:10,411 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:58:10,411 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/sv-benchmarks/c/pthread/triangular-2.i [2022-12-13 13:58:10,424 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/data/ba2ac3489/e6d7ddcd84144ecd8ef5499c41a08021/FLAGc976cec42 [2022-12-13 13:58:10,767 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/data/ba2ac3489/e6d7ddcd84144ecd8ef5499c41a08021 [2022-12-13 13:58:10,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:58:10,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:58:10,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:58:10,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:58:10,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:58:10,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:58:10" (1/1) ... [2022-12-13 13:58:10,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2792a551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:10, skipping insertion in model container [2022-12-13 13:58:10,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:58:10" (1/1) ... [2022-12-13 13:58:10,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:58:10,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:58:11,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:11,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:11,022 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:11,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:11,026 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:11,027 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:11,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:11,028 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:11,029 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_74ffa0dd-e028-4bca-9e78-d0e5837df041/sv-benchmarks/c/pthread/triangular-2.i[30952,30965] [2022-12-13 13:58:11,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:58:11,044 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:58:11,074 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:11,075 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:11,076 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:11,076 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:11,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:11,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:11,080 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 13:58:11,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 13:58:11,081 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_74ffa0dd-e028-4bca-9e78-d0e5837df041/sv-benchmarks/c/pthread/triangular-2.i[30952,30965] [2022-12-13 13:58:11,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:58:11,114 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:58:11,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:11 WrapperNode [2022-12-13 13:58:11,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:58:11,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:58:11,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:58:11,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:58:11,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:11" (1/1) ... [2022-12-13 13:58:11,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:11" (1/1) ... [2022-12-13 13:58:11,155 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2022-12-13 13:58:11,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:58:11,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:58:11,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:58:11,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:58:11,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:11" (1/1) ... [2022-12-13 13:58:11,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:11" (1/1) ... [2022-12-13 13:58:11,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:11" (1/1) ... [2022-12-13 13:58:11,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:11" (1/1) ... [2022-12-13 13:58:11,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:11" (1/1) ... [2022-12-13 13:58:11,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:11" (1/1) ... [2022-12-13 13:58:11,179 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:11" (1/1) ... [2022-12-13 13:58:11,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:11" (1/1) ... [2022-12-13 13:58:11,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:58:11,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:58:11,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:58:11,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:58:11,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:11" (1/1) ... [2022-12-13 13:58:11,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:58:11,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:58:11,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:58:11,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:58:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 13:58:11,244 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 13:58:11,244 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 13:58:11,244 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 13:58:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 13:58:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:58:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:58:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:58:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 13:58:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 13:58:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 13:58:11,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:58:11,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:58:11,247 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 13:58:11,365 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:58:11,367 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:58:11,546 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:58:11,551 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:58:11,551 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 13:58:11,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:58:11 BoogieIcfgContainer [2022-12-13 13:58:11,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:58:11,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:58:11,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:58:11,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:58:11,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:58:10" (1/3) ... [2022-12-13 13:58:11,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74802aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:58:11, skipping insertion in model container [2022-12-13 13:58:11,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:58:11" (2/3) ... [2022-12-13 13:58:11,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74802aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:58:11, skipping insertion in model container [2022-12-13 13:58:11,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:58:11" (3/3) ... [2022-12-13 13:58:11,559 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2022-12-13 13:58:11,572 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:58:11,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 13:58:11,573 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:58:11,632 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 13:58:11,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 168 flow [2022-12-13 13:58:11,696 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-12-13 13:58:11,696 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:58:11,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 5/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 13:58:11,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 79 transitions, 168 flow [2022-12-13 13:58:11,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 77 transitions, 160 flow [2022-12-13 13:58:11,706 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:58:11,720 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 77 transitions, 160 flow [2022-12-13 13:58:11,723 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 77 transitions, 160 flow [2022-12-13 13:58:11,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 77 transitions, 160 flow [2022-12-13 13:58:11,742 INFO L130 PetriNetUnfolder]: 5/77 cut-off events. [2022-12-13 13:58:11,742 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:58:11,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 77 events. 5/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-13 13:58:11,745 INFO L119 LiptonReduction]: Number of co-enabled transitions 1298 [2022-12-13 13:58:17,417 INFO L134 LiptonReduction]: Checked pairs total: 1162 [2022-12-13 13:58:17,417 INFO L136 LiptonReduction]: Total number of compositions: 79 [2022-12-13 13:58:17,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:58:17,433 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;@2d704e78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:58:17,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-13 13:58:17,434 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 13:58:17,435 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:58:17,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:17,435 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 13:58:17,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:17,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:17,439 INFO L85 PathProgramCache]: Analyzing trace with hash 311, now seen corresponding path program 1 times [2022-12-13 13:58:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:17,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216320468] [2022-12-13 13:58:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:17,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:17,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:17,452 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:17,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 13:58:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:17,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 13:58:17,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:17,506 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 13:58:17,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:17,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:17,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216320468] [2022-12-13 13:58:17,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216320468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:17,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:17,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 13:58:17,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342860268] [2022-12-13 13:58:17,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:17,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:58:17,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:17,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:58:17,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:58:17,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 158 [2022-12-13 13:58:17,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:17,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:17,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 158 [2022-12-13 13:58:17,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:17,592 INFO L130 PetriNetUnfolder]: 112/179 cut-off events. [2022-12-13 13:58:17,592 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 13:58:17,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 463 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2022-12-13 13:58:17,594 INFO L137 encePairwiseOnDemand]: 155/158 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2022-12-13 13:58:17,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2022-12-13 13:58:17,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:58:17,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 13:58:17,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 166 transitions. [2022-12-13 13:58:17,606 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5253164556962026 [2022-12-13 13:58:17,607 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 166 transitions. [2022-12-13 13:58:17,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 166 transitions. [2022-12-13 13:58:17,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:17,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 166 transitions. [2022-12-13 13:58:17,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 83.0) internal successors, (166), 2 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:17,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:17,618 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:17,620 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 166 transitions. [2022-12-13 13:58:17,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2022-12-13 13:58:17,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:58:17,623 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2022-12-13 13:58:17,625 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2022-12-13 13:58:17,628 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2022-12-13 13:58:17,628 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2022-12-13 13:58:17,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:17,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:17,629 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 13:58:17,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:58:17,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:17,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:17,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:17,833 INFO L85 PathProgramCache]: Analyzing trace with hash 307381, now seen corresponding path program 1 times [2022-12-13 13:58:17,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:17,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657265318] [2022-12-13 13:58:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:17,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:17,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:17,839 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:17,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 13:58:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:17,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:58:17,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:18,004 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-13 13:58:18,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-12-13 13:58:18,015 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 13:58:18,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:18,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:18,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657265318] [2022-12-13 13:58:18,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657265318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:18,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:18,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:58:18,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995777316] [2022-12-13 13:58:18,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:18,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:58:18,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:18,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:58:18,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:58:18,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:18,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:18,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:18,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:18,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:18,124 INFO L130 PetriNetUnfolder]: 91/146 cut-off events. [2022-12-13 13:58:18,124 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:58:18,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 358 event pairs, 34 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 92 conditions per place. [2022-12-13 13:58:18,126 INFO L137 encePairwiseOnDemand]: 155/158 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2022-12-13 13:58:18,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2022-12-13 13:58:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:58:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:58:18,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2022-12-13 13:58:18,129 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4641350210970464 [2022-12-13 13:58:18,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2022-12-13 13:58:18,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2022-12-13 13:58:18,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:18,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2022-12-13 13:58:18,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:18,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:18,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:18,134 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 220 transitions. [2022-12-13 13:58:18,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2022-12-13 13:58:18,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:58:18,135 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2022-12-13 13:58:18,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2022-12-13 13:58:18,136 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2022-12-13 13:58:18,136 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2022-12-13 13:58:18,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:18,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:18,137 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 13:58:18,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-12-13 13:58:18,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:18,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:18,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:18,340 INFO L85 PathProgramCache]: Analyzing trace with hash 307380, now seen corresponding path program 1 times [2022-12-13 13:58:18,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:18,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909239105] [2022-12-13 13:58:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:18,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:18,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:18,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:18,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 13:58:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:18,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:58:18,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:18,451 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 13:58:18,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-13 13:58:18,469 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 13:58:18,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:18,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:18,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909239105] [2022-12-13 13:58:18,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909239105] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:18,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:18,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:58:18,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443116406] [2022-12-13 13:58:18,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:18,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:58:18,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:18,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:58:18,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:58:18,511 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 158 [2022-12-13 13:58:18,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:18,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:18,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 158 [2022-12-13 13:58:18,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:18,570 INFO L130 PetriNetUnfolder]: 88/140 cut-off events. [2022-12-13 13:58:18,571 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 13:58:18,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 331 event pairs, 44 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 298. Up to 113 conditions per place. [2022-12-13 13:58:18,572 INFO L137 encePairwiseOnDemand]: 155/158 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2022-12-13 13:58:18,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2022-12-13 13:58:18,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:58:18,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:58:18,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2022-12-13 13:58:18,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4810126582278481 [2022-12-13 13:58:18,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2022-12-13 13:58:18,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2022-12-13 13:58:18,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:18,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2022-12-13 13:58:18,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:18,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:18,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:18,578 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 228 transitions. [2022-12-13 13:58:18,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2022-12-13 13:58:18,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:58:18,580 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2022-12-13 13:58:18,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2022-12-13 13:58:18,580 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2022-12-13 13:58:18,581 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2022-12-13 13:58:18,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:18,581 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:18,581 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 13:58:18,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 13:58:18,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:18,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:18,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:18,785 INFO L85 PathProgramCache]: Analyzing trace with hash 567484421, now seen corresponding path program 1 times [2022-12-13 13:58:18,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:18,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148528485] [2022-12-13 13:58:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:18,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:18,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:18,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:18,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 13:58:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:18,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:58:18,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:18,916 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 13:58:18,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:18,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:18,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148528485] [2022-12-13 13:58:18,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148528485] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:18,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:18,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:58:18,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909724666] [2022-12-13 13:58:18,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:18,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:58:18,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:18,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:58:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:58:18,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 158 [2022-12-13 13:58:18,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:18,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:18,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 158 [2022-12-13 13:58:18,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:19,048 INFO L130 PetriNetUnfolder]: 176/281 cut-off events. [2022-12-13 13:58:19,049 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-13 13:58:19,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 892 event pairs, 14 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 598. Up to 144 conditions per place. [2022-12-13 13:58:19,051 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 31 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2022-12-13 13:58:19,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 38 transitions, 166 flow [2022-12-13 13:58:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:58:19,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 13:58:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 375 transitions. [2022-12-13 13:58:19,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47468354430379744 [2022-12-13 13:58:19,054 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 375 transitions. [2022-12-13 13:58:19,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 375 transitions. [2022-12-13 13:58:19,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:19,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 375 transitions. [2022-12-13 13:58:19,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:19,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:19,058 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:19,059 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 375 transitions. [2022-12-13 13:58:19,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 38 transitions, 166 flow [2022-12-13 13:58:19,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:58:19,060 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 79 flow [2022-12-13 13:58:19,061 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=79, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2022-12-13 13:58:19,061 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2022-12-13 13:58:19,062 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 79 flow [2022-12-13 13:58:19,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:19,062 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:19,062 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:19,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 13:58:19,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:19,263 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:19,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:19,264 INFO L85 PathProgramCache]: Analyzing trace with hash 412148406, now seen corresponding path program 1 times [2022-12-13 13:58:19,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:19,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153930517] [2022-12-13 13:58:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:19,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:19,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:19,266 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:19,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 13:58:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:19,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 13:58:19,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:19,471 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 13:58:19,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:19,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:19,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153930517] [2022-12-13 13:58:19,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153930517] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:19,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:19,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:58:19,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872634668] [2022-12-13 13:58:19,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:19,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:58:19,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:19,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:58:19,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:58:19,667 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 158 [2022-12-13 13:58:19,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:19,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:19,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 158 [2022-12-13 13:58:19,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:19,777 INFO L130 PetriNetUnfolder]: 130/212 cut-off events. [2022-12-13 13:58:19,778 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2022-12-13 13:58:19,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 212 events. 130/212 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 627 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 579. Up to 143 conditions per place. [2022-12-13 13:58:19,779 INFO L137 encePairwiseOnDemand]: 155/158 looper letters, 17 selfloop transitions, 1 changer transitions 10/28 dead transitions. [2022-12-13 13:58:19,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 167 flow [2022-12-13 13:58:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:58:19,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:58:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 264 transitions. [2022-12-13 13:58:19,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4177215189873418 [2022-12-13 13:58:19,780 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 264 transitions. [2022-12-13 13:58:19,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 264 transitions. [2022-12-13 13:58:19,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:19,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 264 transitions. [2022-12-13 13:58:19,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:19,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:19,782 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:19,782 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 79 flow. Second operand 4 states and 264 transitions. [2022-12-13 13:58:19,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 167 flow [2022-12-13 13:58:19,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:58:19,783 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 77 flow [2022-12-13 13:58:19,783 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2022-12-13 13:58:19,784 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2022-12-13 13:58:19,784 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 77 flow [2022-12-13 13:58:19,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:19,784 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:19,784 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:19,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 13:58:19,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:19,985 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:19,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:19,985 INFO L85 PathProgramCache]: Analyzing trace with hash -82679451, now seen corresponding path program 1 times [2022-12-13 13:58:19,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:19,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137614737] [2022-12-13 13:58:19,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:19,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:19,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:19,987 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:19,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 13:58:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:20,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:58:20,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:20,092 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 13:58:20,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:20,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:20,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137614737] [2022-12-13 13:58:20,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137614737] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:20,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:20,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:58:20,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912298432] [2022-12-13 13:58:20,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:20,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:58:20,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:20,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:58:20,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:58:20,116 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:20,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:20,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:20,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:20,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:20,212 INFO L130 PetriNetUnfolder]: 92/157 cut-off events. [2022-12-13 13:58:20,212 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-12-13 13:58:20,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 157 events. 92/157 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 443 event pairs, 23 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 449. Up to 61 conditions per place. [2022-12-13 13:58:20,213 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 22 selfloop transitions, 9 changer transitions 3/34 dead transitions. [2022-12-13 13:58:20,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 34 transitions, 193 flow [2022-12-13 13:58:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:58:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 13:58:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 362 transitions. [2022-12-13 13:58:20,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4582278481012658 [2022-12-13 13:58:20,215 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 362 transitions. [2022-12-13 13:58:20,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 362 transitions. [2022-12-13 13:58:20,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:20,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 362 transitions. [2022-12-13 13:58:20,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:20,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:20,218 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:20,218 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 77 flow. Second operand 5 states and 362 transitions. [2022-12-13 13:58:20,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 34 transitions, 193 flow [2022-12-13 13:58:20,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 13:58:20,219 INFO L231 Difference]: Finished difference. Result has 30 places, 21 transitions, 119 flow [2022-12-13 13:58:20,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=30, PETRI_TRANSITIONS=21} [2022-12-13 13:58:20,220 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2022-12-13 13:58:20,220 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 21 transitions, 119 flow [2022-12-13 13:58:20,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:20,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:20,221 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:20,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 13:58:20,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:20,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:20,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:20,422 INFO L85 PathProgramCache]: Analyzing trace with hash -108742670, now seen corresponding path program 1 times [2022-12-13 13:58:20,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:20,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530196067] [2022-12-13 13:58:20,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:20,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:20,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:20,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:20,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 13:58:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:20,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:58:20,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:20,553 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 13:58:20,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:20,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:20,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530196067] [2022-12-13 13:58:20,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530196067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:20,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:20,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:58:20,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882099955] [2022-12-13 13:58:20,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:20,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:58:20,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:20,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:58:20,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:58:20,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:20,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 21 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:20,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:20,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:20,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:20,687 INFO L130 PetriNetUnfolder]: 132/229 cut-off events. [2022-12-13 13:58:20,687 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2022-12-13 13:58:20,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 229 events. 132/229 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 715 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 733. Up to 101 conditions per place. [2022-12-13 13:58:20,689 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2022-12-13 13:58:20,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 301 flow [2022-12-13 13:58:20,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:58:20,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:58:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 434 transitions. [2022-12-13 13:58:20,691 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4578059071729958 [2022-12-13 13:58:20,691 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 434 transitions. [2022-12-13 13:58:20,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 434 transitions. [2022-12-13 13:58:20,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:20,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 434 transitions. [2022-12-13 13:58:20,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.33333333333333) internal successors, (434), 6 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:20,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:20,695 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:20,695 INFO L175 Difference]: Start difference. First operand has 30 places, 21 transitions, 119 flow. Second operand 6 states and 434 transitions. [2022-12-13 13:58:20,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 301 flow [2022-12-13 13:58:20,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 45 transitions, 284 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 13:58:20,698 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 200 flow [2022-12-13 13:58:20,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2022-12-13 13:58:20,699 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 14 predicate places. [2022-12-13 13:58:20,699 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 200 flow [2022-12-13 13:58:20,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:20,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:20,700 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:20,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 13:58:20,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:20,901 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:20,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:20,914 INFO L85 PathProgramCache]: Analyzing trace with hash -108711980, now seen corresponding path program 2 times [2022-12-13 13:58:20,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:20,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508551684] [2022-12-13 13:58:20,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:58:20,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:20,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:20,920 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:20,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 13:58:21,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:58:21,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:21,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 13:58:21,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:21,128 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 13:58:21,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:21,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:21,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508551684] [2022-12-13 13:58:21,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508551684] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:21,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:21,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:58:21,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851713175] [2022-12-13 13:58:21,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:21,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:58:21,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:21,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:58:21,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:58:21,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:21,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 200 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:21,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:21,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:21,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:21,262 INFO L130 PetriNetUnfolder]: 124/219 cut-off events. [2022-12-13 13:58:21,262 INFO L131 PetriNetUnfolder]: For 496/496 co-relation queries the response was YES. [2022-12-13 13:58:21,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 219 events. 124/219 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 710 event pairs, 31 based on Foata normal form. 10/229 useless extension candidates. Maximal degree in co-relation 818. Up to 107 conditions per place. [2022-12-13 13:58:21,263 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 30 selfloop transitions, 12 changer transitions 6/48 dead transitions. [2022-12-13 13:58:21,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 381 flow [2022-12-13 13:58:21,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:58:21,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 13:58:21,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 433 transitions. [2022-12-13 13:58:21,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45675105485232065 [2022-12-13 13:58:21,266 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 433 transitions. [2022-12-13 13:58:21,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 433 transitions. [2022-12-13 13:58:21,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:21,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 433 transitions. [2022-12-13 13:58:21,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:21,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:21,270 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:21,270 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 200 flow. Second operand 6 states and 433 transitions. [2022-12-13 13:58:21,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 381 flow [2022-12-13 13:58:21,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 355 flow, removed 13 selfloop flow, removed 0 redundant places. [2022-12-13 13:58:21,274 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 242 flow [2022-12-13 13:58:21,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=242, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2022-12-13 13:58:21,275 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2022-12-13 13:58:21,275 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 242 flow [2022-12-13 13:58:21,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:21,276 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:21,276 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:21,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 13:58:21,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:21,477 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:21,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:21,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2111464894, now seen corresponding path program 1 times [2022-12-13 13:58:21,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:21,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [232037421] [2022-12-13 13:58:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:21,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:21,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:21,479 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:21,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 13:58:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:21,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:58:21,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:21,609 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 13:58:21,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:21,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:21,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [232037421] [2022-12-13 13:58:21,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [232037421] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:21,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:21,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:58:21,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848420148] [2022-12-13 13:58:21,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:21,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:58:21,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:21,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:58:21,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:58:21,639 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:21,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:21,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:21,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:21,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:21,806 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2022-12-13 13:58:21,806 INFO L131 PetriNetUnfolder]: For 1057/1057 co-relation queries the response was YES. [2022-12-13 13:58:21,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1234 conditions, 303 events. 172/303 cut-off events. For 1057/1057 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1072 event pairs, 41 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1216. Up to 131 conditions per place. [2022-12-13 13:58:21,807 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 43 selfloop transitions, 15 changer transitions 5/63 dead transitions. [2022-12-13 13:58:21,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 536 flow [2022-12-13 13:58:21,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:58:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 13:58:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 646 transitions. [2022-12-13 13:58:21,811 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4542897327707454 [2022-12-13 13:58:21,811 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 646 transitions. [2022-12-13 13:58:21,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 646 transitions. [2022-12-13 13:58:21,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:21,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 646 transitions. [2022-12-13 13:58:21,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.77777777777777) internal successors, (646), 9 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:21,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:21,814 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 158.0) internal successors, (1580), 10 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:21,814 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 242 flow. Second operand 9 states and 646 transitions. [2022-12-13 13:58:21,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 536 flow [2022-12-13 13:58:21,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 63 transitions, 514 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 13:58:21,817 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 330 flow [2022-12-13 13:58:21,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=330, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2022-12-13 13:58:21,818 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 31 predicate places. [2022-12-13 13:58:21,818 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 330 flow [2022-12-13 13:58:21,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:21,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:21,818 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:21,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 13:58:22,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:22,019 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:22,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:22,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2111495584, now seen corresponding path program 2 times [2022-12-13 13:58:22,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:22,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1205718562] [2022-12-13 13:58:22,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:58:22,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:22,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:22,021 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:22,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 13:58:22,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 13:58:22,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:22,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:58:22,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:22,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:22,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:22,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1205718562] [2022-12-13 13:58:22,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1205718562] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:22,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:22,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:58:22,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155357456] [2022-12-13 13:58:22,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:22,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:58:22,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:22,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:58:22,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:58:22,148 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:22,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:22,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:22,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:22,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:22,292 INFO L130 PetriNetUnfolder]: 168/299 cut-off events. [2022-12-13 13:58:22,293 INFO L131 PetriNetUnfolder]: For 1657/1657 co-relation queries the response was YES. [2022-12-13 13:58:22,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1391 conditions, 299 events. 168/299 cut-off events. For 1657/1657 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1079 event pairs, 45 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 1369. Up to 137 conditions per place. [2022-12-13 13:58:22,294 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 38 selfloop transitions, 15 changer transitions 6/59 dead transitions. [2022-12-13 13:58:22,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 59 transitions, 593 flow [2022-12-13 13:58:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:58:22,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 13:58:22,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 504 transitions. [2022-12-13 13:58:22,296 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45569620253164556 [2022-12-13 13:58:22,296 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 504 transitions. [2022-12-13 13:58:22,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 504 transitions. [2022-12-13 13:58:22,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:22,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 504 transitions. [2022-12-13 13:58:22,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:22,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:22,299 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:22,299 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 330 flow. Second operand 7 states and 504 transitions. [2022-12-13 13:58:22,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 59 transitions, 593 flow [2022-12-13 13:58:22,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 522 flow, removed 26 selfloop flow, removed 4 redundant places. [2022-12-13 13:58:22,308 INFO L231 Difference]: Finished difference. Result has 59 places, 40 transitions, 343 flow [2022-12-13 13:58:22,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2022-12-13 13:58:22,309 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 35 predicate places. [2022-12-13 13:58:22,309 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 343 flow [2022-12-13 13:58:22,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:22,310 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:22,310 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:22,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 13:58:22,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:22,512 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:22,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash 2110657654, now seen corresponding path program 3 times [2022-12-13 13:58:22,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:22,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891095822] [2022-12-13 13:58:22,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:58:22,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:22,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:22,515 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:22,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 13:58:22,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-13 13:58:22,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:22,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 13:58:22,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:22,655 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 13:58:22,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:22,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:22,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891095822] [2022-12-13 13:58:22,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891095822] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:22,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:22,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:58:22,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146985890] [2022-12-13 13:58:22,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:22,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:58:22,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:22,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:58:22,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:58:22,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:22,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:22,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:22,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:22,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:22,854 INFO L130 PetriNetUnfolder]: 164/295 cut-off events. [2022-12-13 13:58:22,854 INFO L131 PetriNetUnfolder]: For 1808/1808 co-relation queries the response was YES. [2022-12-13 13:58:22,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 295 events. 164/295 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1103 event pairs, 46 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1316. Up to 222 conditions per place. [2022-12-13 13:58:22,856 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 44 selfloop transitions, 9 changer transitions 9/62 dead transitions. [2022-12-13 13:58:22,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 571 flow [2022-12-13 13:58:22,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:58:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 13:58:22,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 504 transitions. [2022-12-13 13:58:22,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45569620253164556 [2022-12-13 13:58:22,859 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 504 transitions. [2022-12-13 13:58:22,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 504 transitions. [2022-12-13 13:58:22,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:22,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 504 transitions. [2022-12-13 13:58:22,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:22,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:22,863 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:22,863 INFO L175 Difference]: Start difference. First operand has 59 places, 40 transitions, 343 flow. Second operand 7 states and 504 transitions. [2022-12-13 13:58:22,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 571 flow [2022-12-13 13:58:22,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 541 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-12-13 13:58:22,870 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 367 flow [2022-12-13 13:58:22,870 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2022-12-13 13:58:22,870 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 40 predicate places. [2022-12-13 13:58:22,871 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 367 flow [2022-12-13 13:58:22,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:22,871 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:22,871 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:22,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-13 13:58:23,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:23,072 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:23,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:23,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2111639734, now seen corresponding path program 4 times [2022-12-13 13:58:23,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:23,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710713954] [2022-12-13 13:58:23,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:58:23,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:23,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:23,074 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:23,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 13:58:23,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:58:23,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:23,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 13:58:23,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:23,163 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 13:58:23,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:23,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:23,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710713954] [2022-12-13 13:58:23,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710713954] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:23,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:23,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:58:23,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544444259] [2022-12-13 13:58:23,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:23,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:58:23,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:23,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:58:23,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:58:23,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:23,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:23,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:23,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:23,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:23,341 INFO L130 PetriNetUnfolder]: 176/315 cut-off events. [2022-12-13 13:58:23,342 INFO L131 PetriNetUnfolder]: For 2117/2117 co-relation queries the response was YES. [2022-12-13 13:58:23,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 315 events. 176/315 cut-off events. For 2117/2117 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1188 event pairs, 53 based on Foata normal form. 4/319 useless extension candidates. Maximal degree in co-relation 1458. Up to 177 conditions per place. [2022-12-13 13:58:23,343 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 41 selfloop transitions, 16 changer transitions 8/65 dead transitions. [2022-12-13 13:58:23,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 643 flow [2022-12-13 13:58:23,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:58:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 13:58:23,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 503 transitions. [2022-12-13 13:58:23,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45479204339963836 [2022-12-13 13:58:23,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 503 transitions. [2022-12-13 13:58:23,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 503 transitions. [2022-12-13 13:58:23,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:23,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 503 transitions. [2022-12-13 13:58:23,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:23,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:23,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:23,347 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 367 flow. Second operand 7 states and 503 transitions. [2022-12-13 13:58:23,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 643 flow [2022-12-13 13:58:23,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 617 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-12-13 13:58:23,352 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 438 flow [2022-12-13 13:58:23,353 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=438, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2022-12-13 13:58:23,353 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 44 predicate places. [2022-12-13 13:58:23,353 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 438 flow [2022-12-13 13:58:23,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.66666666666667) internal successors, (406), 6 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:23,353 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:23,353 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:23,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 13:58:23,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:23,554 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:23,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:23,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1031880303, now seen corresponding path program 5 times [2022-12-13 13:58:23,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:23,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429997427] [2022-12-13 13:58:23,555 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:58:23,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:23,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:23,556 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:23,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 13:58:23,605 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:58:23,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:23,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 13:58:23,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:23,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:23,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:23,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:23,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429997427] [2022-12-13 13:58:23,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429997427] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:23,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:58:23,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 13:58:23,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460482518] [2022-12-13 13:58:23,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:23,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 13:58:23,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:23,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 13:58:23,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:58:23,892 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:23,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 438 flow. Second operand has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:23,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:23,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:23,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:24,539 INFO L130 PetriNetUnfolder]: 224/395 cut-off events. [2022-12-13 13:58:24,539 INFO L131 PetriNetUnfolder]: For 4433/4433 co-relation queries the response was YES. [2022-12-13 13:58:24,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 395 events. 224/395 cut-off events. For 4433/4433 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1516 event pairs, 12 based on Foata normal form. 16/411 useless extension candidates. Maximal degree in co-relation 2027. Up to 99 conditions per place. [2022-12-13 13:58:24,541 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 36 selfloop transitions, 43 changer transitions 26/105 dead transitions. [2022-12-13 13:58:24,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 1130 flow [2022-12-13 13:58:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 13:58:24,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 13:58:24,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1143 transitions. [2022-12-13 13:58:24,544 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4521360759493671 [2022-12-13 13:58:24,544 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1143 transitions. [2022-12-13 13:58:24,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1143 transitions. [2022-12-13 13:58:24,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:24,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1143 transitions. [2022-12-13 13:58:24,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.4375) internal successors, (1143), 16 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:24,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 158.0) internal successors, (2686), 17 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:24,548 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 158.0) internal successors, (2686), 17 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:24,548 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 438 flow. Second operand 16 states and 1143 transitions. [2022-12-13 13:58:24,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 1130 flow [2022-12-13 13:58:24,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 1081 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-12-13 13:58:24,557 INFO L231 Difference]: Finished difference. Result has 84 places, 61 transitions, 837 flow [2022-12-13 13:58:24,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=837, PETRI_PLACES=84, PETRI_TRANSITIONS=61} [2022-12-13 13:58:24,557 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 60 predicate places. [2022-12-13 13:58:24,557 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 61 transitions, 837 flow [2022-12-13 13:58:24,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:24,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:24,558 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:24,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-13 13:58:24,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:24,759 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:24,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:24,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1006022738, now seen corresponding path program 6 times [2022-12-13 13:58:24,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:24,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828779462] [2022-12-13 13:58:24,762 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 13:58:24,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:24,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:24,766 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:24,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 13:58:24,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 13:58:24,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:24,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 13:58:24,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:24,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:25,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:25,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828779462] [2022-12-13 13:58:25,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828779462] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:25,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:58:25,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 13:58:25,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525022476] [2022-12-13 13:58:25,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:25,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 13:58:25,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:25,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 13:58:25,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:58:25,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:25,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 61 transitions, 837 flow. Second operand has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:25,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:25,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:25,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:25,567 INFO L130 PetriNetUnfolder]: 248/443 cut-off events. [2022-12-13 13:58:25,567 INFO L131 PetriNetUnfolder]: For 7883/7883 co-relation queries the response was YES. [2022-12-13 13:58:25,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 443 events. 248/443 cut-off events. For 7883/7883 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1714 event pairs, 63 based on Foata normal form. 24/467 useless extension candidates. Maximal degree in co-relation 2583. Up to 281 conditions per place. [2022-12-13 13:58:25,570 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 63 selfloop transitions, 19 changer transitions 19/101 dead transitions. [2022-12-13 13:58:25,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 1393 flow [2022-12-13 13:58:25,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 13:58:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 13:58:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 857 transitions. [2022-12-13 13:58:25,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4520042194092827 [2022-12-13 13:58:25,572 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 857 transitions. [2022-12-13 13:58:25,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 857 transitions. [2022-12-13 13:58:25,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:25,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 857 transitions. [2022-12-13 13:58:25,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 71.41666666666667) internal successors, (857), 12 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:25,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 158.0) internal successors, (2054), 13 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:25,575 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 158.0) internal successors, (2054), 13 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:25,575 INFO L175 Difference]: Start difference. First operand has 84 places, 61 transitions, 837 flow. Second operand 12 states and 857 transitions. [2022-12-13 13:58:25,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 1393 flow [2022-12-13 13:58:25,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 1033 flow, removed 161 selfloop flow, removed 9 redundant places. [2022-12-13 13:58:25,588 INFO L231 Difference]: Finished difference. Result has 92 places, 67 transitions, 738 flow [2022-12-13 13:58:25,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=738, PETRI_PLACES=92, PETRI_TRANSITIONS=67} [2022-12-13 13:58:25,589 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2022-12-13 13:58:25,589 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 67 transitions, 738 flow [2022-12-13 13:58:25,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:25,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:25,590 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:25,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-12-13 13:58:25,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:25,791 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:25,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:25,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1035515828, now seen corresponding path program 7 times [2022-12-13 13:58:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:25,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44837445] [2022-12-13 13:58:25,793 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 13:58:25,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:25,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:25,797 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:25,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 13:58:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:25,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 13:58:25,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:26,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:26,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:26,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44837445] [2022-12-13 13:58:26,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44837445] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:26,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:58:26,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 13:58:26,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526562327] [2022-12-13 13:58:26,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:26,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 13:58:26,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:26,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 13:58:26,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:58:26,214 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:26,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 67 transitions, 738 flow. Second operand has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:26,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:26,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:26,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:26,819 INFO L130 PetriNetUnfolder]: 336/603 cut-off events. [2022-12-13 13:58:26,819 INFO L131 PetriNetUnfolder]: For 12794/12794 co-relation queries the response was YES. [2022-12-13 13:58:26,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 603 events. 336/603 cut-off events. For 12794/12794 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2605 event pairs, 62 based on Foata normal form. 24/627 useless extension candidates. Maximal degree in co-relation 3588. Up to 248 conditions per place. [2022-12-13 13:58:26,822 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 81 selfloop transitions, 37 changer transitions 14/132 dead transitions. [2022-12-13 13:58:26,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 1675 flow [2022-12-13 13:58:26,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 13:58:26,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 13:58:26,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1143 transitions. [2022-12-13 13:58:26,825 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4521360759493671 [2022-12-13 13:58:26,825 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1143 transitions. [2022-12-13 13:58:26,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1143 transitions. [2022-12-13 13:58:26,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:26,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1143 transitions. [2022-12-13 13:58:26,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.4375) internal successors, (1143), 16 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:26,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 158.0) internal successors, (2686), 17 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:26,829 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 158.0) internal successors, (2686), 17 states have internal predecessors, (2686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:26,830 INFO L175 Difference]: Start difference. First operand has 92 places, 67 transitions, 738 flow. Second operand 16 states and 1143 transitions. [2022-12-13 13:58:26,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 1675 flow [2022-12-13 13:58:26,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1572 flow, removed 39 selfloop flow, removed 5 redundant places. [2022-12-13 13:58:26,844 INFO L231 Difference]: Finished difference. Result has 111 places, 81 transitions, 1071 flow [2022-12-13 13:58:26,845 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1071, PETRI_PLACES=111, PETRI_TRANSITIONS=81} [2022-12-13 13:58:26,845 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 87 predicate places. [2022-12-13 13:58:26,845 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 81 transitions, 1071 flow [2022-12-13 13:58:26,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:26,845 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:26,846 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:26,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-13 13:58:27,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:27,046 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:27,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:27,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1036353758, now seen corresponding path program 8 times [2022-12-13 13:58:27,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:27,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42141506] [2022-12-13 13:58:27,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:58:27,047 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:27,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:27,048 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:27,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-13 13:58:27,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:58:27,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:27,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 13:58:27,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:27,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:27,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:27,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42141506] [2022-12-13 13:58:27,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42141506] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:27,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:58:27,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-12-13 13:58:27,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534818649] [2022-12-13 13:58:27,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:27,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 13:58:27,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:27,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 13:58:27,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-13 13:58:27,310 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:27,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 81 transitions, 1071 flow. Second operand has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:27,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:27,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:27,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:27,979 INFO L130 PetriNetUnfolder]: 384/691 cut-off events. [2022-12-13 13:58:27,979 INFO L131 PetriNetUnfolder]: For 25124/25124 co-relation queries the response was YES. [2022-12-13 13:58:27,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4872 conditions, 691 events. 384/691 cut-off events. For 25124/25124 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3067 event pairs, 33 based on Foata normal form. 32/723 useless extension candidates. Maximal degree in co-relation 4827. Up to 216 conditions per place. [2022-12-13 13:58:27,982 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 57 selfloop transitions, 70 changer transitions 30/157 dead transitions. [2022-12-13 13:58:27,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 157 transitions, 2462 flow [2022-12-13 13:58:27,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 13:58:27,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 13:58:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1285 transitions. [2022-12-13 13:58:27,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4518284106891702 [2022-12-13 13:58:27,985 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1285 transitions. [2022-12-13 13:58:27,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1285 transitions. [2022-12-13 13:58:27,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:27,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1285 transitions. [2022-12-13 13:58:27,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 71.38888888888889) internal successors, (1285), 18 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:27,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 158.0) internal successors, (3002), 19 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:27,991 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 158.0) internal successors, (3002), 19 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:27,991 INFO L175 Difference]: Start difference. First operand has 111 places, 81 transitions, 1071 flow. Second operand 18 states and 1285 transitions. [2022-12-13 13:58:27,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 157 transitions, 2462 flow [2022-12-13 13:58:28,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 157 transitions, 2111 flow, removed 161 selfloop flow, removed 7 redundant places. [2022-12-13 13:58:28,049 INFO L231 Difference]: Finished difference. Result has 131 places, 103 transitions, 1585 flow [2022-12-13 13:58:28,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1585, PETRI_PLACES=131, PETRI_TRANSITIONS=103} [2022-12-13 13:58:28,049 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 107 predicate places. [2022-12-13 13:58:28,049 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 103 transitions, 1585 flow [2022-12-13 13:58:28,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.83333333333333) internal successors, (814), 12 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:28,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:28,050 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:28,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-13 13:58:28,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:28,251 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:28,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:28,253 INFO L85 PathProgramCache]: Analyzing trace with hash -630154860, now seen corresponding path program 9 times [2022-12-13 13:58:28,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:28,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027772135] [2022-12-13 13:58:28,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:58:28,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:28,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:28,258 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:28,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 13:58:28,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 13:58:28,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:28,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 13:58:28,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:28,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:28,865 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:28,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:28,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027772135] [2022-12-13 13:58:28,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027772135] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:28,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:58:28,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-12-13 13:58:28,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075382181] [2022-12-13 13:58:28,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:28,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 13:58:28,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:28,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 13:58:28,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-12-13 13:58:29,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:29,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 103 transitions, 1585 flow. Second operand has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:29,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:29,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:29,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:30,256 INFO L130 PetriNetUnfolder]: 480/875 cut-off events. [2022-12-13 13:58:30,256 INFO L131 PetriNetUnfolder]: For 39386/39386 co-relation queries the response was YES. [2022-12-13 13:58:30,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6907 conditions, 875 events. 480/875 cut-off events. For 39386/39386 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4222 event pairs, 90 based on Foata normal form. 24/899 useless extension candidates. Maximal degree in co-relation 6853. Up to 401 conditions per place. [2022-12-13 13:58:30,264 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 98 selfloop transitions, 62 changer transitions 43/203 dead transitions. [2022-12-13 13:58:30,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 203 transitions, 3328 flow [2022-12-13 13:58:30,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 13:58:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 13:58:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1704 transitions. [2022-12-13 13:58:30,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44936708860759494 [2022-12-13 13:58:30,267 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1704 transitions. [2022-12-13 13:58:30,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1704 transitions. [2022-12-13 13:58:30,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:30,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1704 transitions. [2022-12-13 13:58:30,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 71.0) internal successors, (1704), 24 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:30,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 158.0) internal successors, (3950), 25 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:30,285 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 158.0) internal successors, (3950), 25 states have internal predecessors, (3950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:30,285 INFO L175 Difference]: Start difference. First operand has 131 places, 103 transitions, 1585 flow. Second operand 24 states and 1704 transitions. [2022-12-13 13:58:30,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 203 transitions, 3328 flow [2022-12-13 13:58:30,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 203 transitions, 2863 flow, removed 216 selfloop flow, removed 8 redundant places. [2022-12-13 13:58:30,348 INFO L231 Difference]: Finished difference. Result has 158 places, 129 transitions, 2038 flow [2022-12-13 13:58:30,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2038, PETRI_PLACES=158, PETRI_TRANSITIONS=129} [2022-12-13 13:58:30,349 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 134 predicate places. [2022-12-13 13:58:30,349 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 129 transitions, 2038 flow [2022-12-13 13:58:30,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:30,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:30,350 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:30,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-13 13:58:30,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:30,551 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:30,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:30,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1047622890, now seen corresponding path program 10 times [2022-12-13 13:58:30,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:30,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735115118] [2022-12-13 13:58:30,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:58:30,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:30,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:30,555 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:30,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-13 13:58:30,661 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:58:30,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:30,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 13:58:30,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:30,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:31,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:31,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735115118] [2022-12-13 13:58:31,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735115118] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:31,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:58:31,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-12-13 13:58:31,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824493678] [2022-12-13 13:58:31,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:31,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 13:58:31,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:31,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 13:58:31,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-12-13 13:58:31,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:31,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 129 transitions, 2038 flow. Second operand has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:31,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:31,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:31,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:33,212 INFO L130 PetriNetUnfolder]: 620/1139 cut-off events. [2022-12-13 13:58:33,212 INFO L131 PetriNetUnfolder]: For 60953/60953 co-relation queries the response was YES. [2022-12-13 13:58:33,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10311 conditions, 1139 events. 620/1139 cut-off events. For 60953/60953 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5718 event pairs, 38 based on Foata normal form. 24/1163 useless extension candidates. Maximal degree in co-relation 10247. Up to 388 conditions per place. [2022-12-13 13:58:33,222 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 97 selfloop transitions, 126 changer transitions 35/258 dead transitions. [2022-12-13 13:58:33,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 258 transitions, 4783 flow [2022-12-13 13:58:33,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 13:58:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-12-13 13:58:33,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2269 transitions. [2022-12-13 13:58:33,225 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44877373417721517 [2022-12-13 13:58:33,226 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2269 transitions. [2022-12-13 13:58:33,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2269 transitions. [2022-12-13 13:58:33,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:33,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2269 transitions. [2022-12-13 13:58:33,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 70.90625) internal successors, (2269), 32 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:33,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 158.0) internal successors, (5214), 33 states have internal predecessors, (5214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:33,237 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 158.0) internal successors, (5214), 33 states have internal predecessors, (5214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:33,237 INFO L175 Difference]: Start difference. First operand has 158 places, 129 transitions, 2038 flow. Second operand 32 states and 2269 transitions. [2022-12-13 13:58:33,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 258 transitions, 4783 flow [2022-12-13 13:58:33,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 258 transitions, 4264 flow, removed 237 selfloop flow, removed 10 redundant places. [2022-12-13 13:58:33,324 INFO L231 Difference]: Finished difference. Result has 189 places, 171 transitions, 3329 flow [2022-12-13 13:58:33,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3329, PETRI_PLACES=189, PETRI_TRANSITIONS=171} [2022-12-13 13:58:33,324 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 165 predicate places. [2022-12-13 13:58:33,325 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 171 transitions, 3329 flow [2022-12-13 13:58:33,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:33,325 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:33,325 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:33,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-13 13:58:33,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:33,527 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:33,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:33,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1048460820, now seen corresponding path program 11 times [2022-12-13 13:58:33,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:33,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568908169] [2022-12-13 13:58:33,530 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:58:33,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:33,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:33,534 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:33,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-13 13:58:33,728 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-13 13:58:33,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:33,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 13:58:33,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:33,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:34,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:34,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568908169] [2022-12-13 13:58:34,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568908169] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:34,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:58:34,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-12-13 13:58:34,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603961834] [2022-12-13 13:58:34,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:34,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 13:58:34,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:34,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 13:58:34,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-12-13 13:58:34,223 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:34,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 171 transitions, 3329 flow. Second operand has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:34,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:34,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:34,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:35,961 INFO L130 PetriNetUnfolder]: 648/1183 cut-off events. [2022-12-13 13:58:35,962 INFO L131 PetriNetUnfolder]: For 76671/76671 co-relation queries the response was YES. [2022-12-13 13:58:35,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11196 conditions, 1183 events. 648/1183 cut-off events. For 76671/76671 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6152 event pairs, 29 based on Foata normal form. 20/1203 useless extension candidates. Maximal degree in co-relation 11121. Up to 400 conditions per place. [2022-12-13 13:58:35,978 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 75 selfloop transitions, 135 changer transitions 50/260 dead transitions. [2022-12-13 13:58:35,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 260 transitions, 4953 flow [2022-12-13 13:58:35,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 13:58:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-13 13:58:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1989 transitions. [2022-12-13 13:58:35,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44959312839059673 [2022-12-13 13:58:35,982 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1989 transitions. [2022-12-13 13:58:35,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1989 transitions. [2022-12-13 13:58:35,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:35,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1989 transitions. [2022-12-13 13:58:35,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 71.03571428571429) internal successors, (1989), 28 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:35,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 158.0) internal successors, (4582), 29 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:35,992 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 158.0) internal successors, (4582), 29 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:35,992 INFO L175 Difference]: Start difference. First operand has 189 places, 171 transitions, 3329 flow. Second operand 28 states and 1989 transitions. [2022-12-13 13:58:35,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 260 transitions, 4953 flow [2022-12-13 13:58:36,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 260 transitions, 3899 flow, removed 477 selfloop flow, removed 21 redundant places. [2022-12-13 13:58:36,198 INFO L231 Difference]: Finished difference. Result has 196 places, 179 transitions, 2836 flow [2022-12-13 13:58:36,198 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=2065, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2836, PETRI_PLACES=196, PETRI_TRANSITIONS=179} [2022-12-13 13:58:36,198 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 172 predicate places. [2022-12-13 13:58:36,198 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 179 transitions, 2836 flow [2022-12-13 13:58:36,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:36,198 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:36,199 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:36,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-12-13 13:58:36,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:36,400 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:36,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:36,401 INFO L85 PathProgramCache]: Analyzing trace with hash 471937913, now seen corresponding path program 12 times [2022-12-13 13:58:36,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:36,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470379753] [2022-12-13 13:58:36,402 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 13:58:36,403 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:36,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:36,406 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:36,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-13 13:58:36,482 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-13 13:58:36,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:58:36,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 13:58:36,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:36,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:36,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:58:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:58:36,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:36,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470379753] [2022-12-13 13:58:36,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470379753] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:58:36,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:58:36,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-12-13 13:58:36,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569220433] [2022-12-13 13:58:36,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:58:36,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 13:58:36,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:36,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 13:58:36,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-12-13 13:58:36,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 158 [2022-12-13 13:58:37,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 179 transitions, 2836 flow. Second operand has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:37,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:58:37,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 158 [2022-12-13 13:58:37,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:58:38,709 INFO L130 PetriNetUnfolder]: 732/1323 cut-off events. [2022-12-13 13:58:38,709 INFO L131 PetriNetUnfolder]: For 76575/76575 co-relation queries the response was YES. [2022-12-13 13:58:38,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11672 conditions, 1323 events. 732/1323 cut-off events. For 76575/76575 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6820 event pairs, 20 based on Foata normal form. 28/1351 useless extension candidates. Maximal degree in co-relation 11599. Up to 368 conditions per place. [2022-12-13 13:58:38,717 INFO L137 encePairwiseOnDemand]: 153/158 looper letters, 71 selfloop transitions, 169 changer transitions 50/290 dead transitions. [2022-12-13 13:58:38,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 290 transitions, 5392 flow [2022-12-13 13:58:38,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 13:58:38,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-13 13:58:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1992 transitions. [2022-12-13 13:58:38,720 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45027124773960214 [2022-12-13 13:58:38,720 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1992 transitions. [2022-12-13 13:58:38,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1992 transitions. [2022-12-13 13:58:38,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:58:38,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1992 transitions. [2022-12-13 13:58:38,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 71.14285714285714) internal successors, (1992), 28 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:38,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 158.0) internal successors, (4582), 29 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:38,725 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 158.0) internal successors, (4582), 29 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:38,725 INFO L175 Difference]: Start difference. First operand has 196 places, 179 transitions, 2836 flow. Second operand 28 states and 1992 transitions. [2022-12-13 13:58:38,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 290 transitions, 5392 flow [2022-12-13 13:58:38,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 290 transitions, 5033 flow, removed 108 selfloop flow, removed 22 redundant places. [2022-12-13 13:58:38,860 INFO L231 Difference]: Finished difference. Result has 215 places, 202 transitions, 3869 flow [2022-12-13 13:58:38,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=2497, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3869, PETRI_PLACES=215, PETRI_TRANSITIONS=202} [2022-12-13 13:58:38,861 INFO L288 CegarLoopForPetriNet]: 24 programPoint places, 191 predicate places. [2022-12-13 13:58:38,861 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 202 transitions, 3869 flow [2022-12-13 13:58:38,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.66666666666667) internal successors, (1218), 18 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:38,861 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:58:38,862 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:38,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-13 13:58:39,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:39,062 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2022-12-13 13:58:39,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:39,063 INFO L85 PathProgramCache]: Analyzing trace with hash 355337514, now seen corresponding path program 13 times [2022-12-13 13:58:39,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:39,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483502868] [2022-12-13 13:58:39,064 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 13:58:39,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:39,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:39,066 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:39,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-13 13:58:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:58:39,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:58:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:58:39,311 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-12-13 13:58:39,311 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:58:39,312 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2022-12-13 13:58:39,313 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2022-12-13 13:58:39,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2022-12-13 13:58:39,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2022-12-13 13:58:39,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2022-12-13 13:58:39,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2022-12-13 13:58:39,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-12-13 13:58:39,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-12-13 13:58:39,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-12-13 13:58:39,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:39,516 INFO L445 BasicCegarLoop]: Path program histogram: [13, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:39,524 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 13:58:39,525 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:58:39,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:58:39 BasicIcfg [2022-12-13 13:58:39,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:58:39,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:58:39,573 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:58:39,573 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:58:39,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:58:11" (3/4) ... [2022-12-13 13:58:39,576 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 13:58:39,576 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:58:39,576 INFO L158 Benchmark]: Toolchain (without parser) took 28805.99ms. Allocated memory was 71.3MB in the beginning and 182.5MB in the end (delta: 111.1MB). Free memory was 42.3MB in the beginning and 83.9MB in the end (delta: -41.6MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2022-12-13 13:58:39,576 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 52.4MB. Free memory is still 30.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:58:39,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.84ms. Allocated memory is still 71.3MB. Free memory was 42.2MB in the beginning and 39.1MB in the end (delta: 3.0MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2022-12-13 13:58:39,577 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.80ms. Allocated memory is still 71.3MB. Free memory was 39.1MB in the beginning and 37.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:58:39,577 INFO L158 Benchmark]: Boogie Preprocessor took 27.38ms. Allocated memory is still 71.3MB. Free memory was 37.0MB in the beginning and 35.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:58:39,577 INFO L158 Benchmark]: RCFGBuilder took 369.33ms. Allocated memory is still 71.3MB. Free memory was 35.2MB in the beginning and 41.7MB in the end (delta: -6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 13:58:39,577 INFO L158 Benchmark]: TraceAbstraction took 28018.16ms. Allocated memory was 71.3MB in the beginning and 182.5MB in the end (delta: 111.1MB). Free memory was 41.0MB in the beginning and 84.9MB in the end (delta: -44.0MB). Peak memory consumption was 67.9MB. Max. memory is 16.1GB. [2022-12-13 13:58:39,577 INFO L158 Benchmark]: Witness Printer took 2.75ms. Allocated memory is still 182.5MB. Free memory was 84.9MB in the beginning and 83.9MB in the end (delta: 995.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:58:39,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 52.4MB. Free memory is still 30.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 342.84ms. Allocated memory is still 71.3MB. Free memory was 42.2MB in the beginning and 39.1MB in the end (delta: 3.0MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.80ms. Allocated memory is still 71.3MB. Free memory was 39.1MB in the beginning and 37.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.38ms. Allocated memory is still 71.3MB. Free memory was 37.0MB in the beginning and 35.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 369.33ms. Allocated memory is still 71.3MB. Free memory was 35.2MB in the beginning and 41.7MB in the end (delta: -6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 28018.16ms. Allocated memory was 71.3MB in the beginning and 182.5MB in the end (delta: 111.1MB). Free memory was 41.0MB in the beginning and 84.9MB in the end (delta: -44.0MB). Peak memory consumption was 67.9MB. Max. memory is 16.1GB. * Witness Printer took 2.75ms. Allocated memory is still 182.5MB. Free memory was 84.9MB in the beginning and 83.9MB in the end (delta: 995.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 79 PlacesBefore, 24 PlacesAfterwards, 77 TransitionsBefore, 20 TransitionsAfterwards, 1298 CoEnabledTransitionPairs, 5 FixpointIterations, 33 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 79 TotalNumberOfCompositions, 1162 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1010, independent: 984, independent conditional: 0, independent unconditional: 984, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 694, independent: 683, independent conditional: 0, independent unconditional: 683, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1010, independent: 301, independent conditional: 0, independent unconditional: 301, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 694, unknown conditional: 0, unknown unconditional: 694] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 722]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 722. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=17, arg={0:0}, argc=17, argv={19:18}, argv={19:18}, i=3, id1={3:0}, id2={7:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=0] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=17, arg={0:0}, arg={0:0}, arg={0:0}, argc=17, argv={19:18}, argv={19:18}, i=3, id1={3:0}, id2={7:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=1] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L716] 0 int condI = i >= (2*5 +6); VAL [\old(argc)=17, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=17, argv={19:18}, argv={19:18}, condI=0, i=7, id1={3:0}, id2={7:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 5 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 5 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L719] 0 int condJ = j >= (2*5 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=17, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=17, argv={19:18}, argv={19:18}, condI=0, condJ=1, i=15, id1={3:0}, id2={7:0}, j=16, k=5, k=5] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 97 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 27.9s, OverallIterations: 21, TraceHistogramMax: 5, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 12.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.8s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 2202 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2013 mSDsluCounter, 506 SdHoareTripleChecker+Invalid, 4.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 462 mSDsCounter, 256 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5345 IncrementalHoareTripleChecker+Invalid, 5606 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 256 mSolverCounterUnsat, 44 mSDtfsCounter, 5345 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 422 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1824 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3869occurred in iteration=20, InterpolantAutomatonStates: 238, 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: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 264 ConstructedInterpolants, 6 QuantifiedInterpolants, 1996 SizeOfPredicates, 51 NumberOfNonLiveVariables, 1358 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 28 InterpolantComputations, 12 PerfectInterpolantSequences, 8/80 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 13:58:39,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74ffa0dd-e028-4bca-9e78-d0e5837df041/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: UNKNOWN: Overapproximated counterexample