./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.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_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/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_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/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_826a0416-6f87-48ab-8c25-6be4b79dcaaf/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 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:37:05,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:37:05,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:37:05,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:37:05,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:37:05,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:37:05,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:37:05,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:37:05,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:37:05,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:37:05,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:37:05,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:37:05,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:37:05,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:37:05,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:37:05,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:37:05,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:37:05,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:37:05,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:37:05,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:37:05,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:37:05,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:37:05,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:37:05,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:37:05,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:37:05,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:37:05,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:37:05,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:37:05,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:37:05,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:37:05,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:37:05,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:37:05,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:37:05,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:37:05,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:37:05,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:37:05,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:37:05,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:37:05,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:37:05,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:37:05,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:37:05,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 13:37:05,615 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:37:05,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:37:05,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:37:05,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:37:05,636 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:37:05,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:37:05,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:37:05,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:37:05,637 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:37:05,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:37:05,638 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:37:05,638 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 13:37:05,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:37:05,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:37:05,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:37:05,639 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 13:37:05,639 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 13:37:05,639 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 13:37:05,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:37:05,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 13:37:05,640 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:37:05,640 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:37:05,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:37:05,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:37:05,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:37:05,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:37:05,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:37:05,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:37:05,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:37:05,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:37:05,642 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:37:05,642 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:37:05,642 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:37:05,642 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:37:05,642 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_826a0416-6f87-48ab-8c25-6be4b79dcaaf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 [2022-12-13 13:37:05,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:37:05,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:37:05,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:37:05,855 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:37:05,855 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:37:05,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2022-12-13 13:37:08,541 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:37:08,737 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:37:08,738 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2022-12-13 13:37:08,748 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/data/670f873eb/83686bbec852453dbb8964052f1e49c2/FLAGe34a2e148 [2022-12-13 13:37:08,762 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/data/670f873eb/83686bbec852453dbb8964052f1e49c2 [2022-12-13 13:37:08,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:37:08,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:37:08,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:37:08,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:37:08,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:37:08,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:37:08" (1/1) ... [2022-12-13 13:37:08,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495c545b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:08, skipping insertion in model container [2022-12-13 13:37:08,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:37:08" (1/1) ... [2022-12-13 13:37:08,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:37:08,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:37:09,051 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2022-12-13 13:37:09,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:37:09,079 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:37:09,103 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/sv-benchmarks/c/goblint-regression/28-race_reach_10-ptrmunge_racefree.i[30176,30189] [2022-12-13 13:37:09,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:37:09,132 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:37:09,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:09 WrapperNode [2022-12-13 13:37:09,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:37:09,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:37:09,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:37:09,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:37:09,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:09" (1/1) ... [2022-12-13 13:37:09,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:09" (1/1) ... [2022-12-13 13:37:09,165 INFO L138 Inliner]: procedures = 172, calls = 52, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 218 [2022-12-13 13:37:09,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:37:09,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:37:09,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:37:09,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:37:09,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:09" (1/1) ... [2022-12-13 13:37:09,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:09" (1/1) ... [2022-12-13 13:37:09,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:09" (1/1) ... [2022-12-13 13:37:09,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:09" (1/1) ... [2022-12-13 13:37:09,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:09" (1/1) ... [2022-12-13 13:37:09,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:09" (1/1) ... [2022-12-13 13:37:09,186 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:09" (1/1) ... [2022-12-13 13:37:09,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:09" (1/1) ... [2022-12-13 13:37:09,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:37:09,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:37:09,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:37:09,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:37:09,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:09" (1/1) ... [2022-12-13 13:37:09,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:37:09,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:37:09,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:37:09,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:37:09,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:37:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-12-13 13:37:09,242 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-12-13 13:37:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:37:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 13:37:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:37:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:37:09,242 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-12-13 13:37:09,242 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-12-13 13:37:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:37:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:37:09,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:37:09,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:37:09,244 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 13:37:09,349 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:37:09,351 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:37:09,666 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:37:09,673 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:37:09,673 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-12-13 13:37:09,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:37:09 BoogieIcfgContainer [2022-12-13 13:37:09,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:37:09,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:37:09,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:37:09,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:37:09,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:37:08" (1/3) ... [2022-12-13 13:37:09,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f90346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:37:09, skipping insertion in model container [2022-12-13 13:37:09,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:37:09" (2/3) ... [2022-12-13 13:37:09,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f90346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:37:09, skipping insertion in model container [2022-12-13 13:37:09,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:37:09" (3/3) ... [2022-12-13 13:37:09,681 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2022-12-13 13:37:09,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:37:09,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2022-12-13 13:37:09,696 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 13:37:09,789 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 13:37:09,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 259 transitions, 540 flow [2022-12-13 13:37:09,923 INFO L130 PetriNetUnfolder]: 58/469 cut-off events. [2022-12-13 13:37:09,924 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-12-13 13:37:09,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 469 events. 58/469 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2308 event pairs, 0 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 251. Up to 8 conditions per place. [2022-12-13 13:37:09,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 259 transitions, 540 flow [2022-12-13 13:37:09,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 259 transitions, 540 flow [2022-12-13 13:37:09,941 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:37:09,949 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 259 transitions, 540 flow [2022-12-13 13:37:09,951 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 259 transitions, 540 flow [2022-12-13 13:37:09,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 259 transitions, 540 flow [2022-12-13 13:37:10,015 INFO L130 PetriNetUnfolder]: 58/469 cut-off events. [2022-12-13 13:37:10,016 INFO L131 PetriNetUnfolder]: For 8/13 co-relation queries the response was YES. [2022-12-13 13:37:10,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 469 events. 58/469 cut-off events. For 8/13 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2308 event pairs, 0 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 251. Up to 8 conditions per place. [2022-12-13 13:37:10,032 INFO L119 LiptonReduction]: Number of co-enabled transitions 27972 [2022-12-13 13:37:13,980 INFO L134 LiptonReduction]: Checked pairs total: 67016 [2022-12-13 13:37:13,980 INFO L136 LiptonReduction]: Total number of compositions: 205 [2022-12-13 13:37:13,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:37:13,998 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;@68e28766, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:37:13,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2022-12-13 13:37:14,001 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 13:37:14,001 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:37:14,001 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:37:14,002 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 13:37:14,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-12-13 13:37:14,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:37:14,006 INFO L85 PathProgramCache]: Analyzing trace with hash 32835, now seen corresponding path program 1 times [2022-12-13 13:37:14,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:37:14,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411929455] [2022-12-13 13:37:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:37:14,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:37:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:14,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:37:14,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:37:14,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411929455] [2022-12-13 13:37:14,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411929455] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:37:14,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:37:14,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:37:14,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31508100] [2022-12-13 13:37:14,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:37:14,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:37:14,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:37:14,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:37:14,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:37:14,326 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 464 [2022-12-13 13:37:14,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 109 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:14,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:37:14,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 464 [2022-12-13 13:37:14,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:37:15,829 INFO L130 PetriNetUnfolder]: 12865/21310 cut-off events. [2022-12-13 13:37:15,829 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-12-13 13:37:15,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40892 conditions, 21310 events. 12865/21310 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 164314 event pairs, 9756 based on Foata normal form. 1624/13804 useless extension candidates. Maximal degree in co-relation 39292. Up to 15535 conditions per place. [2022-12-13 13:37:15,915 INFO L137 encePairwiseOnDemand]: 438/464 looper letters, 103 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2022-12-13 13:37:15,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 124 transitions, 480 flow [2022-12-13 13:37:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:37:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:37:15,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2022-12-13 13:37:15,927 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5739942528735632 [2022-12-13 13:37:15,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2022-12-13 13:37:15,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2022-12-13 13:37:15,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:37:15,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2022-12-13 13:37:15,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:15,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 464.0) internal successors, (1856), 4 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:15,945 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 464.0) internal successors, (1856), 4 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:15,947 INFO L175 Difference]: Start difference. First operand has 88 places, 109 transitions, 240 flow. Second operand 3 states and 799 transitions. [2022-12-13 13:37:15,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 124 transitions, 480 flow [2022-12-13 13:37:15,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 124 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 13:37:15,955 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 196 flow [2022-12-13 13:37:15,957 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=86, PETRI_TRANSITIONS=85} [2022-12-13 13:37:15,960 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, -2 predicate places. [2022-12-13 13:37:15,960 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 196 flow [2022-12-13 13:37:15,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:15,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:37:15,961 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 13:37:15,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:37:15,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-12-13 13:37:15,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:37:15,962 INFO L85 PathProgramCache]: Analyzing trace with hash 32836, now seen corresponding path program 1 times [2022-12-13 13:37:15,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:37:15,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947926845] [2022-12-13 13:37:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:37:15,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:37:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:37:16,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:37:16,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947926845] [2022-12-13 13:37:16,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947926845] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:37:16,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:37:16,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:37:16,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237006859] [2022-12-13 13:37:16,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:37:16,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:37:16,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:37:16,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:37:16,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:37:16,140 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 464 [2022-12-13 13:37:16,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 85 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:16,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:37:16,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 464 [2022-12-13 13:37:16,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:37:17,471 INFO L130 PetriNetUnfolder]: 12587/21513 cut-off events. [2022-12-13 13:37:17,471 INFO L131 PetriNetUnfolder]: For 565/565 co-relation queries the response was YES. [2022-12-13 13:37:17,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41386 conditions, 21513 events. 12587/21513 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 175096 event pairs, 5814 based on Foata normal form. 0/12941 useless extension candidates. Maximal degree in co-relation 40192. Up to 19211 conditions per place. [2022-12-13 13:37:17,566 INFO L137 encePairwiseOnDemand]: 460/464 looper letters, 85 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2022-12-13 13:37:17,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 106 transitions, 412 flow [2022-12-13 13:37:17,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:37:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 13:37:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 749 transitions. [2022-12-13 13:37:17,569 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5380747126436781 [2022-12-13 13:37:17,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 749 transitions. [2022-12-13 13:37:17,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 749 transitions. [2022-12-13 13:37:17,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:37:17,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 749 transitions. [2022-12-13 13:37:17,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.66666666666666) internal successors, (749), 3 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:17,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 464.0) internal successors, (1856), 4 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:17,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 464.0) internal successors, (1856), 4 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:17,573 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 196 flow. Second operand 3 states and 749 transitions. [2022-12-13 13:37:17,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 106 transitions, 412 flow [2022-12-13 13:37:17,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 106 transitions, 408 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 13:37:17,583 INFO L231 Difference]: Finished difference. Result has 87 places, 85 transitions, 202 flow [2022-12-13 13:37:17,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=87, PETRI_TRANSITIONS=85} [2022-12-13 13:37:17,584 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, -1 predicate places. [2022-12-13 13:37:17,584 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 85 transitions, 202 flow [2022-12-13 13:37:17,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:17,585 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:37:17,585 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 13:37:17,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:37:17,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-12-13 13:37:17,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:37:17,586 INFO L85 PathProgramCache]: Analyzing trace with hash 979036520, now seen corresponding path program 1 times [2022-12-13 13:37:17,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:37:17,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663118444] [2022-12-13 13:37:17,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:37:17,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:37:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:37:17,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:37:17,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663118444] [2022-12-13 13:37:17,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663118444] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:37:17,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064659124] [2022-12-13 13:37:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:37:17,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:37:17,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:37:17,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:37:17,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:37:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:17,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 13:37:17,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:37:17,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 13:37:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:37:17,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:37:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:37:17,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064659124] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:37:17,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 13:37:17,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-12-13 13:37:17,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931009293] [2022-12-13 13:37:17,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 13:37:17,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 13:37:17,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:37:17,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 13:37:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:37:18,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 464 [2022-12-13 13:37:18,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 85 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 216.875) internal successors, (1735), 8 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:18,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:37:18,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 464 [2022-12-13 13:37:18,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 13:37:18,279 INFO L130 PetriNetUnfolder]: 43/132 cut-off events. [2022-12-13 13:37:18,279 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-12-13 13:37:18,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 132 events. 43/132 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 510 event pairs, 12 based on Foata normal form. 21/122 useless extension candidates. Maximal degree in co-relation 291. Up to 82 conditions per place. [2022-12-13 13:37:18,281 INFO L137 encePairwiseOnDemand]: 460/464 looper letters, 43 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-12-13 13:37:18,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 209 flow [2022-12-13 13:37:18,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 13:37:18,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 13:37:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 907 transitions. [2022-12-13 13:37:18,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4886853448275862 [2022-12-13 13:37:18,284 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 907 transitions. [2022-12-13 13:37:18,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 907 transitions. [2022-12-13 13:37:18,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 13:37:18,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 907 transitions. [2022-12-13 13:37:18,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 226.75) internal successors, (907), 4 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:18,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 464.0) internal successors, (2320), 5 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:18,292 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 464.0) internal successors, (2320), 5 states have internal predecessors, (2320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:18,292 INFO L175 Difference]: Start difference. First operand has 87 places, 85 transitions, 202 flow. Second operand 4 states and 907 transitions. [2022-12-13 13:37:18,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 209 flow [2022-12-13 13:37:18,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 203 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 13:37:18,294 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 75 flow [2022-12-13 13:37:18,294 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=464, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2022-12-13 13:37:18,294 INFO L288 CegarLoopForPetriNet]: 88 programPoint places, -49 predicate places. [2022-12-13 13:37:18,295 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 75 flow [2022-12-13 13:37:18,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 216.875) internal successors, (1735), 8 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:18,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:37:18,296 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 13:37:18,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:37:18,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_826a0416-6f87-48ab-8c25-6be4b79dcaaf/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:37:18,497 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2022-12-13 13:37:18,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:37:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash 285361867, now seen corresponding path program 1 times [2022-12-13 13:37:18,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:37:18,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964521232] [2022-12-13 13:37:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:37:18,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:37:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:37:18,515 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:37:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:37:18,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 13:37:18,542 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:37:18,543 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (54 of 55 remaining) [2022-12-13 13:37:18,545 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 55 remaining) [2022-12-13 13:37:18,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 55 remaining) [2022-12-13 13:37:18,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 55 remaining) [2022-12-13 13:37:18,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 55 remaining) [2022-12-13 13:37:18,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 55 remaining) [2022-12-13 13:37:18,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 55 remaining) [2022-12-13 13:37:18,546 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 55 remaining) [2022-12-13 13:37:18,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 55 remaining) [2022-12-13 13:37:18,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 55 remaining) [2022-12-13 13:37:18,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 55 remaining) [2022-12-13 13:37:18,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10ASSERT_VIOLATIONMEMORY_LEAK (43 of 55 remaining) [2022-12-13 13:37:18,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 55 remaining) [2022-12-13 13:37:18,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 55 remaining) [2022-12-13 13:37:18,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 55 remaining) [2022-12-13 13:37:18,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 55 remaining) [2022-12-13 13:37:18,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 55 remaining) [2022-12-13 13:37:18,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 55 remaining) [2022-12-13 13:37:18,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 55 remaining) [2022-12-13 13:37:18,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 55 remaining) [2022-12-13 13:37:18,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (34 of 55 remaining) [2022-12-13 13:37:18,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 55 remaining) [2022-12-13 13:37:18,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 55 remaining) [2022-12-13 13:37:18,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 55 remaining) [2022-12-13 13:37:18,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 55 remaining) [2022-12-13 13:37:18,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 55 remaining) [2022-12-13 13:37:18,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 55 remaining) [2022-12-13 13:37:18,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 55 remaining) [2022-12-13 13:37:18,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 55 remaining) [2022-12-13 13:37:18,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 55 remaining) [2022-12-13 13:37:18,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 55 remaining) [2022-12-13 13:37:18,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 55 remaining) [2022-12-13 13:37:18,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr10ASSERT_VIOLATIONMEMORY_LEAK (22 of 55 remaining) [2022-12-13 13:37:18,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 55 remaining) [2022-12-13 13:37:18,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 55 remaining) [2022-12-13 13:37:18,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 55 remaining) [2022-12-13 13:37:18,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 55 remaining) [2022-12-13 13:37:18,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 55 remaining) [2022-12-13 13:37:18,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 55 remaining) [2022-12-13 13:37:18,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 55 remaining) [2022-12-13 13:37:18,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 55 remaining) [2022-12-13 13:37:18,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 55 remaining) [2022-12-13 13:37:18,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 55 remaining) [2022-12-13 13:37:18,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr10ASSERT_VIOLATIONMEMORY_LEAK (11 of 55 remaining) [2022-12-13 13:37:18,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 55 remaining) [2022-12-13 13:37:18,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 55 remaining) [2022-12-13 13:37:18,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 55 remaining) [2022-12-13 13:37:18,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 55 remaining) [2022-12-13 13:37:18,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 55 remaining) [2022-12-13 13:37:18,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 55 remaining) [2022-12-13 13:37:18,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 55 remaining) [2022-12-13 13:37:18,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 55 remaining) [2022-12-13 13:37:18,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 55 remaining) [2022-12-13 13:37:18,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 55 remaining) [2022-12-13 13:37:18,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr10ASSERT_VIOLATIONMEMORY_LEAK (0 of 55 remaining) [2022-12-13 13:37:18,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:37:18,555 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-13 13:37:18,557 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 13:37:18,557 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 13:37:18,614 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-13 13:37:18,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 413 transitions, 874 flow [2022-12-13 13:37:18,836 INFO L130 PetriNetUnfolder]: 197/1365 cut-off events. [2022-12-13 13:37:18,836 INFO L131 PetriNetUnfolder]: For 72/86 co-relation queries the response was YES. [2022-12-13 13:37:18,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1462 conditions, 1365 events. 197/1365 cut-off events. For 72/86 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9137 event pairs, 1 based on Foata normal form. 0/989 useless extension candidates. Maximal degree in co-relation 836. Up to 32 conditions per place. [2022-12-13 13:37:18,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 362 places, 413 transitions, 874 flow [2022-12-13 13:37:18,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 413 transitions, 874 flow [2022-12-13 13:37:18,865 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 13:37:18,865 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 362 places, 413 transitions, 874 flow [2022-12-13 13:37:18,865 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 362 places, 413 transitions, 874 flow [2022-12-13 13:37:18,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 413 transitions, 874 flow [2022-12-13 13:37:19,064 INFO L130 PetriNetUnfolder]: 197/1365 cut-off events. [2022-12-13 13:37:19,065 INFO L131 PetriNetUnfolder]: For 72/86 co-relation queries the response was YES. [2022-12-13 13:37:19,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1462 conditions, 1365 events. 197/1365 cut-off events. For 72/86 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9137 event pairs, 1 based on Foata normal form. 0/989 useless extension candidates. Maximal degree in co-relation 836. Up to 32 conditions per place. [2022-12-13 13:37:19,131 INFO L119 LiptonReduction]: Number of co-enabled transitions 102712 [2022-12-13 13:37:24,888 INFO L134 LiptonReduction]: Checked pairs total: 288602 [2022-12-13 13:37:24,888 INFO L136 LiptonReduction]: Total number of compositions: 320 [2022-12-13 13:37:24,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:37:24,890 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;@68e28766, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:37:24,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 77 error locations. [2022-12-13 13:37:24,891 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 13:37:24,892 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 13:37:24,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 13:37:24,892 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 13:37:24,892 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 74 more)] === [2022-12-13 13:37:24,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:37:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash 61149, now seen corresponding path program 1 times [2022-12-13 13:37:24,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:37:24,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230746823] [2022-12-13 13:37:24,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:37:24,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:37:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:37:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:37:24,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:37:24,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230746823] [2022-12-13 13:37:24,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230746823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:37:24,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:37:24,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 13:37:24,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063564066] [2022-12-13 13:37:24,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:37:24,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:37:24,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:37:24,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:37:24,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:37:24,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 733 [2022-12-13 13:37:24,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 196 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 340.6666666666667) internal successors, (1022), 3 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:37:24,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 13:37:24,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 733 [2022-12-13 13:37:24,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand