./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.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_c669d3b3-88a9-487c-af25-f70b19acc742/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/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_c669d3b3-88a9-487c-af25-f70b19acc742/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/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_c669d3b3-88a9-487c-af25-f70b19acc742/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 2b5f4c57d88bf6e97d091c1ec0f5525d1ae2da6c31cffbcaaf02c59d6e6570e5 --- 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 14:45:50,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:45:50,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:45:50,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:45:50,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:45:50,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:45:50,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:45:50,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:45:50,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:45:50,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:45:50,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:45:50,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:45:50,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:45:50,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:45:50,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:45:50,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:45:50,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:45:50,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:45:50,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:45:50,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:45:50,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:45:50,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:45:50,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:45:50,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:45:50,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:45:50,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:45:50,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:45:50,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:45:50,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:45:50,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:45:50,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:45:50,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:45:50,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:45:50,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:45:50,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:45:50,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:45:50,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:45:50,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:45:50,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:45:50,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:45:50,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:45:50,590 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 14:45:50,611 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:45:50,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:45:50,611 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:45:50,611 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:45:50,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:45:50,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:45:50,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:45:50,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:45:50,613 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:45:50,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:45:50,614 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:45:50,614 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:45:50,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:45:50,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:45:50,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:45:50,615 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 14:45:50,615 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 14:45:50,615 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 14:45:50,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:45:50,615 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 14:45:50,616 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:45:50,616 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:45:50,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:45:50,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:45:50,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:45:50,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:45:50,617 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:45:50,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:45:50,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:45:50,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:45:50,618 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:45:50,618 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:45:50,618 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:45:50,618 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:45:50,618 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_c669d3b3-88a9-487c-af25-f70b19acc742/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b5f4c57d88bf6e97d091c1ec0f5525d1ae2da6c31cffbcaaf02c59d6e6570e5 [2022-12-13 14:45:50,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:45:50,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:45:50,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:45:50,820 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:45:50,820 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:45:50,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i [2022-12-13 14:45:53,390 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:45:53,574 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:45:53,574 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/sv-benchmarks/c/goblint-regression/04-mutex_12-ptr_nr.i [2022-12-13 14:45:53,584 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/bin/uautomizer-uyxdKDjOR8/data/8b2fac8c0/18f16256d143413f8273806a3852160d/FLAGcf2282ace [2022-12-13 14:45:53,594 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/bin/uautomizer-uyxdKDjOR8/data/8b2fac8c0/18f16256d143413f8273806a3852160d [2022-12-13 14:45:53,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:45:53,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:45:53,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:45:53,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:45:53,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:45:53,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:45:53" (1/1) ... [2022-12-13 14:45:53,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1165f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53, skipping insertion in model container [2022-12-13 14:45:53,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:45:53" (1/1) ... [2022-12-13 14:45:53,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:45:53,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:45:53,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:45:53,889 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:45:53,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:45:53,952 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:45:53,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53 WrapperNode [2022-12-13 14:45:53,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:45:53,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:45:53,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:45:53,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:45:53,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53" (1/1) ... [2022-12-13 14:45:53,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53" (1/1) ... [2022-12-13 14:45:53,984 INFO L138 Inliner]: procedures = 262, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2022-12-13 14:45:53,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:45:53,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:45:53,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:45:53,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:45:53,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53" (1/1) ... [2022-12-13 14:45:53,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53" (1/1) ... [2022-12-13 14:45:53,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53" (1/1) ... [2022-12-13 14:45:53,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53" (1/1) ... [2022-12-13 14:45:53,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53" (1/1) ... [2022-12-13 14:45:53,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53" (1/1) ... [2022-12-13 14:45:53,999 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53" (1/1) ... [2022-12-13 14:45:53,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53" (1/1) ... [2022-12-13 14:45:54,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:45:54,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:45:54,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:45:54,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:45:54,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53" (1/1) ... [2022-12-13 14:45:54,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:45:54,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:45:54,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:45:54,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:45:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:45:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:45:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:45:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:45:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 14:45:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:45:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 14:45:54,066 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 14:45:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:45:54,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:45:54,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:45:54,067 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 14:45:54,172 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:45:54,174 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:45:54,322 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:45:54,329 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:45:54,329 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 14:45:54,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:45:54 BoogieIcfgContainer [2022-12-13 14:45:54,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:45:54,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:45:54,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:45:54,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:45:54,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:45:53" (1/3) ... [2022-12-13 14:45:54,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637651ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:45:54, skipping insertion in model container [2022-12-13 14:45:54,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:45:53" (2/3) ... [2022-12-13 14:45:54,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@637651ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:45:54, skipping insertion in model container [2022-12-13 14:45:54,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:45:54" (3/3) ... [2022-12-13 14:45:54,340 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_12-ptr_nr.i [2022-12-13 14:45:54,356 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:45:54,356 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2022-12-13 14:45:54,356 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:45:54,398 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 14:45:54,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 76 transitions, 160 flow [2022-12-13 14:45:54,469 INFO L130 PetriNetUnfolder]: 0/75 cut-off events. [2022-12-13 14:45:54,469 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:45:54,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 75 events. 0/75 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 82 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 14:45:54,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 76 transitions, 160 flow [2022-12-13 14:45:54,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 70 transitions, 146 flow [2022-12-13 14:45:54,479 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:45:54,490 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 74 places, 70 transitions, 146 flow [2022-12-13 14:45:54,493 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 74 places, 70 transitions, 146 flow [2022-12-13 14:45:54,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 70 transitions, 146 flow [2022-12-13 14:45:54,516 INFO L130 PetriNetUnfolder]: 0/70 cut-off events. [2022-12-13 14:45:54,516 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:45:54,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 70 events. 0/70 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 81 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-13 14:45:54,517 INFO L119 LiptonReduction]: Number of co-enabled transitions 420 [2022-12-13 14:45:56,339 INFO L134 LiptonReduction]: Checked pairs total: 1918 [2022-12-13 14:45:56,339 INFO L136 LiptonReduction]: Total number of compositions: 85 [2022-12-13 14:45:56,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:45:56,354 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;@5e1ffac2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:45:56,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 14:45:56,355 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 14:45:56,356 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:45:56,356 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:45:56,356 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 14:45:56,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 14:45:56,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:45:56,362 INFO L85 PathProgramCache]: Analyzing trace with hash 284, now seen corresponding path program 1 times [2022-12-13 14:45:56,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:45:56,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880388290] [2022-12-13 14:45:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:45:56,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:45:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:56,448 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 14:45:56,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:45:56,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880388290] [2022-12-13 14:45:56,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880388290] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:45:56,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:45:56,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 14:45:56,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128780986] [2022-12-13 14:45:56,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:45:56,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:45:56,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:45:56,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:45:56,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:45:56,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 161 [2022-12-13 14:45:56,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:56,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:45:56,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 161 [2022-12-13 14:45:56,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:45:56,521 INFO L130 PetriNetUnfolder]: 35/102 cut-off events. [2022-12-13 14:45:56,521 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 14:45:56,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 102 events. 35/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 385 event pairs, 35 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 180. Up to 87 conditions per place. [2022-12-13 14:45:56,523 INFO L137 encePairwiseOnDemand]: 155/161 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2022-12-13 14:45:56,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 19 transitions, 76 flow [2022-12-13 14:45:56,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:45:56,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 14:45:56,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 170 transitions. [2022-12-13 14:45:56,533 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2022-12-13 14:45:56,534 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 170 transitions. [2022-12-13 14:45:56,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 170 transitions. [2022-12-13 14:45:56,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:45:56,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 170 transitions. [2022-12-13 14:45:56,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:56,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:56,543 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:56,545 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 2 states and 170 transitions. [2022-12-13 14:45:56,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 19 transitions, 76 flow [2022-12-13 14:45:56,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:45:56,548 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 40 flow [2022-12-13 14:45:56,550 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2022-12-13 14:45:56,553 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-12-13 14:45:56,553 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 40 flow [2022-12-13 14:45:56,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 74.5) internal successors, (149), 2 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:56,553 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:45:56,553 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 14:45:56,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:45:56,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 14:45:56,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:45:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash 277374, now seen corresponding path program 1 times [2022-12-13 14:45:56,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:45:56,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443270089] [2022-12-13 14:45:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:45:56,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:45:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:56,705 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 14:45:56,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:45:56,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443270089] [2022-12-13 14:45:56,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443270089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:45:56,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:45:56,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:45:56,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834466979] [2022-12-13 14:45:56,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:45:56,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:45:56,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:45:56,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:45:56,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:45:56,746 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 161 [2022-12-13 14:45:56,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 40 flow. Second operand has 3 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 14:45:56,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:45:56,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 161 [2022-12-13 14:45:56,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:45:56,781 INFO L130 PetriNetUnfolder]: 24/75 cut-off events. [2022-12-13 14:45:56,782 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:45:56,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 75 events. 24/75 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 251 event pairs, 24 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 138. Up to 61 conditions per place. [2022-12-13 14:45:56,783 INFO L137 encePairwiseOnDemand]: 157/161 looper letters, 12 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2022-12-13 14:45:56,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 17 transitions, 64 flow [2022-12-13 14:45:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:45:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:45:56,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2022-12-13 14:45:56,785 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.474120082815735 [2022-12-13 14:45:56,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2022-12-13 14:45:56,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2022-12-13 14:45:56,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:45:56,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2022-12-13 14:45:56,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:56,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:56,789 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:56,789 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 40 flow. Second operand 3 states and 229 transitions. [2022-12-13 14:45:56,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 17 transitions, 64 flow [2022-12-13 14:45:56,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 14:45:56,790 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 40 flow [2022-12-13 14:45:56,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2022-12-13 14:45:56,790 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2022-12-13 14:45:56,791 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 40 flow [2022-12-13 14:45:56,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 14:45:56,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:45:56,791 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 14:45:56,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:45:56,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 14:45:56,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:45:56,792 INFO L85 PathProgramCache]: Analyzing trace with hash 277375, now seen corresponding path program 1 times [2022-12-13 14:45:56,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:45:56,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055117382] [2022-12-13 14:45:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:45:56,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:45:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:56,918 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 14:45:56,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:45:56,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055117382] [2022-12-13 14:45:56,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055117382] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:45:56,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:45:56,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:45:56,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493772228] [2022-12-13 14:45:56,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:45:56,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:45:56,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:45:56,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:45:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:45:56,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 161 [2022-12-13 14:45:56,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:56,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:45:56,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 161 [2022-12-13 14:45:56,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:45:56,980 INFO L130 PetriNetUnfolder]: 15/52 cut-off events. [2022-12-13 14:45:56,980 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:45:56,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 52 events. 15/52 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 143 event pairs, 15 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 97. Up to 42 conditions per place. [2022-12-13 14:45:56,981 INFO L137 encePairwiseOnDemand]: 158/161 looper letters, 11 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2022-12-13 14:45:56,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 15 transitions, 60 flow [2022-12-13 14:45:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:45:56,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:45:56,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2022-12-13 14:45:56,983 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2022-12-13 14:45:56,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2022-12-13 14:45:56,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2022-12-13 14:45:56,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:45:56,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2022-12-13 14:45:56,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:56,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:56,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:56,986 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 40 flow. Second operand 3 states and 230 transitions. [2022-12-13 14:45:56,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 15 transitions, 60 flow [2022-12-13 14:45:56,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 56 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:45:56,987 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 34 flow [2022-12-13 14:45:56,987 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2022-12-13 14:45:56,988 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -9 predicate places. [2022-12-13 14:45:56,988 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 34 flow [2022-12-13 14:45:56,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:56,989 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:45:56,989 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 14:45:56,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:45:56,989 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 14:45:56,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:45:56,989 INFO L85 PathProgramCache]: Analyzing trace with hash -326297981, now seen corresponding path program 1 times [2022-12-13 14:45:56,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:45:56,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963119909] [2022-12-13 14:45:56,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:45:56,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:45:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:45:57,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:45:57,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963119909] [2022-12-13 14:45:57,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963119909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:45:57,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:45:57,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:45:57,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9472810] [2022-12-13 14:45:57,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:45:57,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:45:57,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:45:57,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:45:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:45:57,090 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 161 [2022-12-13 14:45:57,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:57,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:45:57,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 161 [2022-12-13 14:45:57,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:45:57,108 INFO L130 PetriNetUnfolder]: 12/45 cut-off events. [2022-12-13 14:45:57,108 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:45:57,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 45 events. 12/45 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 113 event pairs, 12 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 82. Up to 34 conditions per place. [2022-12-13 14:45:57,108 INFO L137 encePairwiseOnDemand]: 158/161 looper letters, 9 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2022-12-13 14:45:57,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 54 flow [2022-12-13 14:45:57,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:45:57,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:45:57,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2022-12-13 14:45:57,109 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.453416149068323 [2022-12-13 14:45:57,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2022-12-13 14:45:57,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2022-12-13 14:45:57,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:45:57,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2022-12-13 14:45:57,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:57,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:57,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:57,112 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 34 flow. Second operand 3 states and 219 transitions. [2022-12-13 14:45:57,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 54 flow [2022-12-13 14:45:57,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 53 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:45:57,113 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 35 flow [2022-12-13 14:45:57,113 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=31, 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=35, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2022-12-13 14:45:57,113 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -9 predicate places. [2022-12-13 14:45:57,113 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 35 flow [2022-12-13 14:45:57,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:57,114 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:45:57,114 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 14:45:57,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:45:57,114 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 14:45:57,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:45:57,114 INFO L85 PathProgramCache]: Analyzing trace with hash -326297982, now seen corresponding path program 1 times [2022-12-13 14:45:57,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:45:57,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950299174] [2022-12-13 14:45:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:45:57,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:45:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:57,156 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 14:45:57,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:45:57,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950299174] [2022-12-13 14:45:57,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950299174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:45:57,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:45:57,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:45:57,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774949706] [2022-12-13 14:45:57,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:45:57,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:45:57,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:45:57,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:45:57,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:45:57,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 161 [2022-12-13 14:45:57,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 35 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 14:45:57,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:45:57,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 161 [2022-12-13 14:45:57,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:45:57,208 INFO L130 PetriNetUnfolder]: 12/41 cut-off events. [2022-12-13 14:45:57,208 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:45:57,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 41 events. 12/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 84 event pairs, 12 based on Foata normal form. 4/44 useless extension candidates. Maximal degree in co-relation 80. Up to 34 conditions per place. [2022-12-13 14:45:57,209 INFO L137 encePairwiseOnDemand]: 158/161 looper letters, 9 selfloop transitions, 2 changer transitions 0/13 dead transitions. [2022-12-13 14:45:57,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 55 flow [2022-12-13 14:45:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:45:57,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:45:57,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2022-12-13 14:45:57,210 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2022-12-13 14:45:57,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 210 transitions. [2022-12-13 14:45:57,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 210 transitions. [2022-12-13 14:45:57,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:45:57,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 210 transitions. [2022-12-13 14:45:57,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 14:45:57,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:57,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:57,212 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 35 flow. Second operand 3 states and 210 transitions. [2022-12-13 14:45:57,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 55 flow [2022-12-13 14:45:57,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 51 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:45:57,213 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 33 flow [2022-12-13 14:45:57,213 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=29, 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=33, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2022-12-13 14:45:57,213 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -10 predicate places. [2022-12-13 14:45:57,214 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 33 flow [2022-12-13 14:45:57,214 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 14:45:57,214 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:45:57,214 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:45:57,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:45:57,214 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 14:45:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:45:57,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1017062846, now seen corresponding path program 1 times [2022-12-13 14:45:57,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:45:57,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795551002] [2022-12-13 14:45:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:45:57,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:45:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:57,276 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 14:45:57,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:45:57,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795551002] [2022-12-13 14:45:57,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795551002] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:45:57,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:45:57,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:45:57,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017397585] [2022-12-13 14:45:57,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:45:57,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:45:57,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:45:57,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:45:57,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:45:57,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 161 [2022-12-13 14:45:57,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:57,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:45:57,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 161 [2022-12-13 14:45:57,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:45:57,309 INFO L130 PetriNetUnfolder]: 1/22 cut-off events. [2022-12-13 14:45:57,309 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 14:45:57,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 22 events. 1/22 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 1 based on Foata normal form. 5/27 useless extension candidates. Maximal degree in co-relation 44. Up to 10 conditions per place. [2022-12-13 14:45:57,309 INFO L137 encePairwiseOnDemand]: 157/161 looper letters, 7 selfloop transitions, 4 changer transitions 0/13 dead transitions. [2022-12-13 14:45:57,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 55 flow [2022-12-13 14:45:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:45:57,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:45:57,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2022-12-13 14:45:57,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4554865424430642 [2022-12-13 14:45:57,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2022-12-13 14:45:57,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2022-12-13 14:45:57,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:45:57,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2022-12-13 14:45:57,312 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 14:45:57,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:57,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:57,313 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 33 flow. Second operand 3 states and 220 transitions. [2022-12-13 14:45:57,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 55 flow [2022-12-13 14:45:57,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 13 transitions, 51 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:45:57,314 INFO L231 Difference]: Finished difference. Result has 19 places, 13 transitions, 37 flow [2022-12-13 14:45:57,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=19, PETRI_TRANSITIONS=13} [2022-12-13 14:45:57,315 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -10 predicate places. [2022-12-13 14:45:57,315 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 13 transitions, 37 flow [2022-12-13 14:45:57,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:57,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:45:57,315 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:45:57,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:45:57,316 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-12-13 14:45:57,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:45:57,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1306059078, now seen corresponding path program 2 times [2022-12-13 14:45:57,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:45:57,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981502560] [2022-12-13 14:45:57,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:45:57,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:45:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:57,421 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 14:45:57,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:45:57,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981502560] [2022-12-13 14:45:57,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981502560] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:45:57,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:45:57,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:45:57,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293663766] [2022-12-13 14:45:57,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:45:57,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:45:57,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:45:57,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:45:57,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:45:57,454 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 161 [2022-12-13 14:45:57,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 37 flow. Second operand has 3 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 14:45:57,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:45:57,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 161 [2022-12-13 14:45:57,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:45:57,468 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2022-12-13 14:45:57,468 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 14:45:57,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 21 events. 1/21 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 1 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 46. Up to 15 conditions per place. [2022-12-13 14:45:57,469 INFO L137 encePairwiseOnDemand]: 159/161 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2022-12-13 14:45:57,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 53 flow [2022-12-13 14:45:57,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:45:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:45:57,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2022-12-13 14:45:57,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4554865424430642 [2022-12-13 14:45:57,470 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 220 transitions. [2022-12-13 14:45:57,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 220 transitions. [2022-12-13 14:45:57,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:45:57,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 220 transitions. [2022-12-13 14:45:57,471 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 14:45:57,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:57,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:45:57,472 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 37 flow. Second operand 3 states and 220 transitions. [2022-12-13 14:45:57,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 53 flow [2022-12-13 14:45:57,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:45:57,473 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2022-12-13 14:45:57,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2022-12-13 14:45:57,473 INFO L288 CegarLoopForPetriNet]: 29 programPoint places, -10 predicate places. [2022-12-13 14:45:57,473 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2022-12-13 14:45:57,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 14:45:57,475 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2022-12-13 14:45:57,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 18 remaining) [2022-12-13 14:45:57,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2022-12-13 14:45:57,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2022-12-13 14:45:57,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2022-12-13 14:45:57,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2022-12-13 14:45:57,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2022-12-13 14:45:57,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2022-12-13 14:45:57,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (9 of 18 remaining) [2022-12-13 14:45:57,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-12-13 14:45:57,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2022-12-13 14:45:57,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2022-12-13 14:45:57,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2022-12-13 14:45:57,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2022-12-13 14:45:57,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2022-12-13 14:45:57,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2022-12-13 14:45:57,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2022-12-13 14:45:57,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2022-12-13 14:45:57,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:45:57,478 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2022-12-13 14:45:57,482 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 14:45:57,483 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:45:57,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:45:57 BasicIcfg [2022-12-13 14:45:57,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:45:57,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:45:57,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:45:57,486 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:45:57,486 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:45:54" (3/4) ... [2022-12-13 14:45:57,488 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 14:45:57,493 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-12-13 14:45:57,495 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-12-13 14:45:57,496 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 14:45:57,496 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 14:45:57,518 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 14:45:57,518 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:45:57,519 INFO L158 Benchmark]: Toolchain (without parser) took 3921.50ms. Allocated memory was 121.6MB in the beginning and 161.5MB in the end (delta: 39.8MB). Free memory was 79.6MB in the beginning and 106.9MB in the end (delta: -27.3MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2022-12-13 14:45:57,519 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:45:57,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.17ms. Allocated memory is still 121.6MB. Free memory was 79.2MB in the beginning and 52.3MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-13 14:45:57,519 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.24ms. Allocated memory is still 121.6MB. Free memory was 52.3MB in the beginning and 50.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:45:57,520 INFO L158 Benchmark]: Boogie Preprocessor took 16.59ms. Allocated memory is still 121.6MB. Free memory was 50.2MB in the beginning and 48.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:45:57,520 INFO L158 Benchmark]: RCFGBuilder took 322.21ms. Allocated memory is still 161.5MB. Free memory was 134.1MB in the beginning and 120.9MB in the end (delta: 13.2MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2022-12-13 14:45:57,520 INFO L158 Benchmark]: TraceAbstraction took 3151.11ms. Allocated memory is still 161.5MB. Free memory was 120.9MB in the beginning and 110.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2022-12-13 14:45:57,521 INFO L158 Benchmark]: Witness Printer took 32.62ms. Allocated memory is still 161.5MB. Free memory was 110.0MB in the beginning and 106.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:45:57,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 121.6MB. Free memory is still 65.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 354.17ms. Allocated memory is still 121.6MB. Free memory was 79.2MB in the beginning and 52.3MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.24ms. Allocated memory is still 121.6MB. Free memory was 52.3MB in the beginning and 50.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.59ms. Allocated memory is still 121.6MB. Free memory was 50.2MB in the beginning and 48.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 322.21ms. Allocated memory is still 161.5MB. Free memory was 134.1MB in the beginning and 120.9MB in the end (delta: 13.2MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3151.11ms. Allocated memory is still 161.5MB. Free memory was 120.9MB in the beginning and 110.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * Witness Printer took 32.62ms. Allocated memory is still 161.5MB. Free memory was 110.0MB in the beginning and 106.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 74 PlacesBefore, 29 PlacesAfterwards, 70 TransitionsBefore, 25 TransitionsAfterwards, 420 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 85 TotalNumberOfCompositions, 1918 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1075, independent: 937, independent conditional: 0, independent unconditional: 937, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 307, independent: 278, independent conditional: 0, independent unconditional: 278, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1075, independent: 659, independent conditional: 0, independent unconditional: 659, dependent: 109, dependent conditional: 0, dependent unconditional: 109, unknown: 307, unknown conditional: 0, unknown unconditional: 307] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 927]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 93 locations, 18 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: 3.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 363 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 135 mSDsluCounter, 72 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 312 IncrementalHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 72 mSDtfsCounter, 312 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 14:45:57,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c669d3b3-88a9-487c-af25-f70b19acc742/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE