./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 07:40:58,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 07:40:58,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 07:40:58,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 07:40:58,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 07:40:58,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 07:40:58,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 07:40:58,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 07:40:58,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 07:40:58,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 07:40:58,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 07:40:58,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 07:40:58,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 07:40:58,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 07:40:58,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 07:40:58,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 07:40:58,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 07:40:58,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 07:40:58,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 07:40:58,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 07:40:58,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 07:40:58,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 07:40:58,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 07:40:58,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 07:40:58,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 07:40:58,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 07:40:58,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 07:40:58,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 07:40:58,649 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 07:40:58,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 07:40:58,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 07:40:58,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 07:40:58,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 07:40:58,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 07:40:58,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 07:40:58,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 07:40:58,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 07:40:58,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 07:40:58,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 07:40:58,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 07:40:58,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 07:40:58,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 07:40:58,682 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 07:40:58,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 07:40:58,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 07:40:58,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 07:40:58,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 07:40:58,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 07:40:58,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 07:40:58,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 07:40:58,685 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 07:40:58,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 07:40:58,686 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 07:40:58,686 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 07:40:58,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 07:40:58,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 07:40:58,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 07:40:58,687 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 07:40:58,687 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 07:40:58,687 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 07:40:58,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 07:40:58,687 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 07:40:58,688 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 07:40:58,688 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 07:40:58,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 07:40:58,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 07:40:58,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 07:40:58,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:40:58,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 07:40:58,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 07:40:58,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 07:40:58,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 07:40:58,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 07:40:58,689 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 07:40:58,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 07:40:58,690 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 07:40:58,690 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 07:40:58,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 07:40:58,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 07:40:58,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 07:40:58,957 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 07:40:58,957 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 07:40:58,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-30 07:40:59,981 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 07:41:00,114 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 07:41:00,114 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-30 07:41:00,119 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a3f2076/d28b811d685140779634677253649ac0/FLAG6df91e0ec [2023-08-30 07:41:00,128 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34a3f2076/d28b811d685140779634677253649ac0 [2023-08-30 07:41:00,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 07:41:00,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 07:41:00,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 07:41:00,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 07:41:00,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 07:41:00,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:41:00" (1/1) ... [2023-08-30 07:41:00,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c46f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00, skipping insertion in model container [2023-08-30 07:41:00,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:41:00" (1/1) ... [2023-08-30 07:41:00,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 07:41:00,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:41:00,245 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c[3046,3059] [2023-08-30 07:41:00,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:41:00,254 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 07:41:00,266 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c[3046,3059] [2023-08-30 07:41:00,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:41:00,271 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 07:41:00,271 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 07:41:00,276 INFO L208 MainTranslator]: Completed translation [2023-08-30 07:41:00,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00 WrapperNode [2023-08-30 07:41:00,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 07:41:00,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 07:41:00,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 07:41:00,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 07:41:00,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00" (1/1) ... [2023-08-30 07:41:00,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00" (1/1) ... [2023-08-30 07:41:00,303 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 123 [2023-08-30 07:41:00,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 07:41:00,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 07:41:00,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 07:41:00,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 07:41:00,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00" (1/1) ... [2023-08-30 07:41:00,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00" (1/1) ... [2023-08-30 07:41:00,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00" (1/1) ... [2023-08-30 07:41:00,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00" (1/1) ... [2023-08-30 07:41:00,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00" (1/1) ... [2023-08-30 07:41:00,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00" (1/1) ... [2023-08-30 07:41:00,339 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00" (1/1) ... [2023-08-30 07:41:00,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00" (1/1) ... [2023-08-30 07:41:00,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 07:41:00,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 07:41:00,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 07:41:00,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 07:41:00,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00" (1/1) ... [2023-08-30 07:41:00,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:41:00,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:41:00,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 07:41:00,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 07:41:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 07:41:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 07:41:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 07:41:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 07:41:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 07:41:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 07:41:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 07:41:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 07:41:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 07:41:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 07:41:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 07:41:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 07:41:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 07:41:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 07:41:00,400 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 07:41:00,480 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 07:41:00,481 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 07:41:00,660 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 07:41:00,688 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 07:41:00,688 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 07:41:00,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:41:00 BoogieIcfgContainer [2023-08-30 07:41:00,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 07:41:00,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 07:41:00,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 07:41:00,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 07:41:00,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:41:00" (1/3) ... [2023-08-30 07:41:00,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25459552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:41:00, skipping insertion in model container [2023-08-30 07:41:00,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:41:00" (2/3) ... [2023-08-30 07:41:00,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25459552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:41:00, skipping insertion in model container [2023-08-30 07:41:00,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:41:00" (3/3) ... [2023-08-30 07:41:00,695 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-08-30 07:41:00,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 07:41:00,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 07:41:00,707 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 07:41:00,755 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 07:41:00,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 90 transitions, 196 flow [2023-08-30 07:41:00,817 INFO L130 PetriNetUnfolder]: 1/88 cut-off events. [2023-08-30 07:41:00,817 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:41:00,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 1/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-30 07:41:00,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 90 transitions, 196 flow [2023-08-30 07:41:00,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 84 transitions, 180 flow [2023-08-30 07:41:00,824 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 07:41:00,830 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 84 transitions, 180 flow [2023-08-30 07:41:00,832 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 84 transitions, 180 flow [2023-08-30 07:41:00,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 180 flow [2023-08-30 07:41:00,847 INFO L130 PetriNetUnfolder]: 1/84 cut-off events. [2023-08-30 07:41:00,847 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:41:00,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 1/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-08-30 07:41:00,848 INFO L119 LiptonReduction]: Number of co-enabled transitions 748 [2023-08-30 07:41:02,778 INFO L134 LiptonReduction]: Checked pairs total: 4687 [2023-08-30 07:41:02,778 INFO L136 LiptonReduction]: Total number of compositions: 63 [2023-08-30 07:41:02,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 07:41:02,792 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;@3c2365d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 07:41:02,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 07:41:02,793 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 07:41:02,793 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:41:02,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:41:02,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 07:41:02,794 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:41:02,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:41:02,797 INFO L85 PathProgramCache]: Analyzing trace with hash 365, now seen corresponding path program 1 times [2023-08-30 07:41:02,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:41:02,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301805921] [2023-08-30 07:41:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:41:02,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:41:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:41:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:41:02,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:41:02,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301805921] [2023-08-30 07:41:02,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301805921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:41:02,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:41:02,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 07:41:02,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032085457] [2023-08-30 07:41:02,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:41:02,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 07:41:02,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:41:02,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 07:41:02,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 07:41:02,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 153 [2023-08-30 07:41:02,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:02,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:41:02,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 153 [2023-08-30 07:41:02,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:41:02,953 INFO L130 PetriNetUnfolder]: 105/272 cut-off events. [2023-08-30 07:41:02,953 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 07:41:02,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 272 events. 105/272 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1348 event pairs, 105 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 420. Up to 205 conditions per place. [2023-08-30 07:41:02,957 INFO L137 encePairwiseOnDemand]: 150/153 looper letters, 21 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-08-30 07:41:02,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 120 flow [2023-08-30 07:41:02,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 07:41:02,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 07:41:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 184 transitions. [2023-08-30 07:41:02,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2023-08-30 07:41:02,970 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 184 transitions. [2023-08-30 07:41:02,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 184 transitions. [2023-08-30 07:41:02,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:41:02,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 184 transitions. [2023-08-30 07:41:02,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:02,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:02,981 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:02,982 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 84 flow. Second operand 2 states and 184 transitions. [2023-08-30 07:41:02,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 120 flow [2023-08-30 07:41:02,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 07:41:02,989 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 70 flow [2023-08-30 07:41:02,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-08-30 07:41:02,995 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -6 predicate places. [2023-08-30 07:41:02,995 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 70 flow [2023-08-30 07:41:02,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:02,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:41:02,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:41:03,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 07:41:03,002 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:41:03,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:41:03,006 INFO L85 PathProgramCache]: Analyzing trace with hash 361409, now seen corresponding path program 1 times [2023-08-30 07:41:03,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:41:03,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324025704] [2023-08-30 07:41:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:41:03,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:41:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:41:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:41:03,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:41:03,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324025704] [2023-08-30 07:41:03,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324025704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:41:03,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:41:03,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:41:03,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645406435] [2023-08-30 07:41:03,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:41:03,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:41:03,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:41:03,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:41:03,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:41:03,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 153 [2023-08-30 07:41:03,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:41:03,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 153 [2023-08-30 07:41:03,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:41:03,216 INFO L130 PetriNetUnfolder]: 99/256 cut-off events. [2023-08-30 07:41:03,216 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:41:03,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 256 events. 99/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1259 event pairs, 99 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 451. Up to 190 conditions per place. [2023-08-30 07:41:03,218 INFO L137 encePairwiseOnDemand]: 150/153 looper letters, 18 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-08-30 07:41:03,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 104 flow [2023-08-30 07:41:03,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:41:03,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:41:03,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-08-30 07:41:03,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2023-08-30 07:41:03,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-08-30 07:41:03,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-08-30 07:41:03,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:41:03,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-08-30 07:41:03,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,222 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 70 flow. Second operand 3 states and 246 transitions. [2023-08-30 07:41:03,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 104 flow [2023-08-30 07:41:03,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 07:41:03,223 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 68 flow [2023-08-30 07:41:03,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-30 07:41:03,224 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -6 predicate places. [2023-08-30 07:41:03,224 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 68 flow [2023-08-30 07:41:03,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:41:03,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:41:03,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 07:41:03,225 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:41:03,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:41:03,228 INFO L85 PathProgramCache]: Analyzing trace with hash 361408, now seen corresponding path program 1 times [2023-08-30 07:41:03,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:41:03,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124866675] [2023-08-30 07:41:03,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:41:03,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:41:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:41:03,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:41:03,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:41:03,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124866675] [2023-08-30 07:41:03,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124866675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:41:03,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:41:03,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:41:03,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006456268] [2023-08-30 07:41:03,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:41:03,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:41:03,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:41:03,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:41:03,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:41:03,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 153 [2023-08-30 07:41:03,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 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) [2023-08-30 07:41:03,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:41:03,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 153 [2023-08-30 07:41:03,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:41:03,339 INFO L130 PetriNetUnfolder]: 93/240 cut-off events. [2023-08-30 07:41:03,339 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:41:03,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 240 events. 93/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1139 event pairs, 93 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 422. Up to 176 conditions per place. [2023-08-30 07:41:03,342 INFO L137 encePairwiseOnDemand]: 150/153 looper letters, 16 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-30 07:41:03,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 98 flow [2023-08-30 07:41:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:41:03,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:41:03,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-08-30 07:41:03,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054466230936819 [2023-08-30 07:41:03,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-08-30 07:41:03,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-08-30 07:41:03,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:41:03,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-08-30 07:41:03,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,348 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 232 transitions. [2023-08-30 07:41:03,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 98 flow [2023-08-30 07:41:03,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:41:03,349 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 65 flow [2023-08-30 07:41:03,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-08-30 07:41:03,350 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-08-30 07:41:03,352 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 65 flow [2023-08-30 07:41:03,352 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) [2023-08-30 07:41:03,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:41:03,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:41:03,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 07:41:03,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:41:03,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:41:03,354 INFO L85 PathProgramCache]: Analyzing trace with hash 347320779, now seen corresponding path program 1 times [2023-08-30 07:41:03,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:41:03,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119558017] [2023-08-30 07:41:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:41:03,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:41:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:41:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:41:03,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:41:03,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119558017] [2023-08-30 07:41:03,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119558017] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:41:03,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:41:03,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:41:03,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222990834] [2023-08-30 07:41:03,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:41:03,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:41:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:41:03,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:41:03,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:41:03,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 153 [2023-08-30 07:41:03,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:41:03,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 153 [2023-08-30 07:41:03,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:41:03,605 INFO L130 PetriNetUnfolder]: 69/188 cut-off events. [2023-08-30 07:41:03,606 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:41:03,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 188 events. 69/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 798 event pairs, 69 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 331. Up to 136 conditions per place. [2023-08-30 07:41:03,609 INFO L137 encePairwiseOnDemand]: 151/153 looper letters, 15 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-30 07:41:03,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 95 flow [2023-08-30 07:41:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:41:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:41:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-08-30 07:41:03,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514161220043573 [2023-08-30 07:41:03,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-08-30 07:41:03,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-08-30 07:41:03,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:41:03,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-08-30 07:41:03,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,616 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 65 flow. Second operand 3 states and 236 transitions. [2023-08-30 07:41:03,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 95 flow [2023-08-30 07:41:03,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:41:03,617 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 64 flow [2023-08-30 07:41:03,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-30 07:41:03,618 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-08-30 07:41:03,618 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 64 flow [2023-08-30 07:41:03,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:41:03,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:41:03,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 07:41:03,619 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:41:03,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:41:03,619 INFO L85 PathProgramCache]: Analyzing trace with hash 347320778, now seen corresponding path program 1 times [2023-08-30 07:41:03,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:41:03,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238032975] [2023-08-30 07:41:03,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:41:03,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:41:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:41:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:41:03,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:41:03,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238032975] [2023-08-30 07:41:03,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238032975] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:41:03,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:41:03,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:41:03,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718578456] [2023-08-30 07:41:03,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:41:03,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:41:03,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:41:03,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:41:03,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:41:03,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 153 [2023-08-30 07:41:03,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:41:03,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 153 [2023-08-30 07:41:03,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:41:03,756 INFO L130 PetriNetUnfolder]: 45/136 cut-off events. [2023-08-30 07:41:03,757 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:41:03,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 136 events. 45/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 518 event pairs, 45 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 240. Up to 96 conditions per place. [2023-08-30 07:41:03,758 INFO L137 encePairwiseOnDemand]: 151/153 looper letters, 14 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-30 07:41:03,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 92 flow [2023-08-30 07:41:03,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:41:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:41:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-08-30 07:41:03,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47276688453159044 [2023-08-30 07:41:03,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-08-30 07:41:03,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-08-30 07:41:03,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:41:03,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-08-30 07:41:03,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,765 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 64 flow. Second operand 3 states and 217 transitions. [2023-08-30 07:41:03,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 92 flow [2023-08-30 07:41:03,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:41:03,766 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 63 flow [2023-08-30 07:41:03,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-08-30 07:41:03,768 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-08-30 07:41:03,768 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 63 flow [2023-08-30 07:41:03,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:41:03,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:41:03,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 07:41:03,769 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:41:03,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:41:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash -546551339, now seen corresponding path program 1 times [2023-08-30 07:41:03,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:41:03,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024043538] [2023-08-30 07:41:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:41:03,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:41:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:41:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:41:03,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:41:03,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024043538] [2023-08-30 07:41:03,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024043538] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:41:03,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:41:03,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:41:03,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945742994] [2023-08-30 07:41:03,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:41:03,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:41:03,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:41:03,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:41:03,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:41:03,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 153 [2023-08-30 07:41:03,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:03,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:41:03,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 153 [2023-08-30 07:41:03,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:41:04,099 INFO L130 PetriNetUnfolder]: 133/295 cut-off events. [2023-08-30 07:41:04,099 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 07:41:04,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 295 events. 133/295 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1169 event pairs, 39 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 589. Up to 80 conditions per place. [2023-08-30 07:41:04,102 INFO L137 encePairwiseOnDemand]: 147/153 looper letters, 34 selfloop transitions, 6 changer transitions 16/64 dead transitions. [2023-08-30 07:41:04,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 257 flow [2023-08-30 07:41:04,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:41:04,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:41:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 568 transitions. [2023-08-30 07:41:04,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303454715219421 [2023-08-30 07:41:04,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 568 transitions. [2023-08-30 07:41:04,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 568 transitions. [2023-08-30 07:41:04,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:41:04,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 568 transitions. [2023-08-30 07:41:04,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.14285714285714) internal successors, (568), 7 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,111 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,111 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 63 flow. Second operand 7 states and 568 transitions. [2023-08-30 07:41:04,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 257 flow [2023-08-30 07:41:04,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:41:04,114 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 97 flow [2023-08-30 07:41:04,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-08-30 07:41:04,115 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-08-30 07:41:04,116 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 97 flow [2023-08-30 07:41:04,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:41:04,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:41:04,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 07:41:04,117 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:41:04,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:41:04,117 INFO L85 PathProgramCache]: Analyzing trace with hash 909761877, now seen corresponding path program 2 times [2023-08-30 07:41:04,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:41:04,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221898194] [2023-08-30 07:41:04,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:41:04,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:41:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:41:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:41:04,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:41:04,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221898194] [2023-08-30 07:41:04,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221898194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:41:04,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:41:04,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 07:41:04,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549929217] [2023-08-30 07:41:04,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:41:04,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:41:04,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:41:04,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:41:04,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:41:04,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 153 [2023-08-30 07:41:04,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 97 flow. Second operand has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:41:04,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 153 [2023-08-30 07:41:04,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:41:04,395 INFO L130 PetriNetUnfolder]: 204/536 cut-off events. [2023-08-30 07:41:04,396 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-08-30 07:41:04,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 536 events. 204/536 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2923 event pairs, 22 based on Foata normal form. 6/535 useless extension candidates. Maximal degree in co-relation 1067. Up to 91 conditions per place. [2023-08-30 07:41:04,398 INFO L137 encePairwiseOnDemand]: 145/153 looper letters, 41 selfloop transitions, 11 changer transitions 13/77 dead transitions. [2023-08-30 07:41:04,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 77 transitions, 326 flow [2023-08-30 07:41:04,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 07:41:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 07:41:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 696 transitions. [2023-08-30 07:41:04,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054466230936819 [2023-08-30 07:41:04,400 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 696 transitions. [2023-08-30 07:41:04,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 696 transitions. [2023-08-30 07:41:04,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:41:04,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 696 transitions. [2023-08-30 07:41:04,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.33333333333333) internal successors, (696), 9 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,403 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,403 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 97 flow. Second operand 9 states and 696 transitions. [2023-08-30 07:41:04,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 77 transitions, 326 flow [2023-08-30 07:41:04,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 77 transitions, 322 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 07:41:04,406 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 169 flow [2023-08-30 07:41:04,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=169, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2023-08-30 07:41:04,407 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2023-08-30 07:41:04,407 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 169 flow [2023-08-30 07:41:04,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:41:04,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:41:04,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 07:41:04,408 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:41:04,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:41:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1968690479, now seen corresponding path program 3 times [2023-08-30 07:41:04,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:41:04,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072455581] [2023-08-30 07:41:04,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:41:04,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:41:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:41:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:41:04,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:41:04,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072455581] [2023-08-30 07:41:04,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072455581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:41:04,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:41:04,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:41:04,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289812454] [2023-08-30 07:41:04,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:41:04,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:41:04,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:41:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:41:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:41:04,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 153 [2023-08-30 07:41:04,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:41:04,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 153 [2023-08-30 07:41:04,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:41:04,680 INFO L130 PetriNetUnfolder]: 237/528 cut-off events. [2023-08-30 07:41:04,680 INFO L131 PetriNetUnfolder]: For 377/381 co-relation queries the response was YES. [2023-08-30 07:41:04,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 528 events. 237/528 cut-off events. For 377/381 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2541 event pairs, 86 based on Foata normal form. 4/517 useless extension candidates. Maximal degree in co-relation 1462. Up to 161 conditions per place. [2023-08-30 07:41:04,682 INFO L137 encePairwiseOnDemand]: 148/153 looper letters, 32 selfloop transitions, 5 changer transitions 21/70 dead transitions. [2023-08-30 07:41:04,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 70 transitions, 412 flow [2023-08-30 07:41:04,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:41:04,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:41:04,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 557 transitions. [2023-08-30 07:41:04,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200746965452848 [2023-08-30 07:41:04,698 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 557 transitions. [2023-08-30 07:41:04,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 557 transitions. [2023-08-30 07:41:04,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:41:04,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 557 transitions. [2023-08-30 07:41:04,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,701 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,701 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 169 flow. Second operand 7 states and 557 transitions. [2023-08-30 07:41:04,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 70 transitions, 412 flow [2023-08-30 07:41:04,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 406 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 07:41:04,704 INFO L231 Difference]: Finished difference. Result has 59 places, 37 transitions, 170 flow [2023-08-30 07:41:04,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=59, PETRI_TRANSITIONS=37} [2023-08-30 07:41:04,705 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-08-30 07:41:04,705 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 37 transitions, 170 flow [2023-08-30 07:41:04,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:41:04,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:41:04,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 07:41:04,706 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:41:04,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:41:04,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1599262865, now seen corresponding path program 4 times [2023-08-30 07:41:04,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:41:04,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837445483] [2023-08-30 07:41:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:41:04,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:41:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:41:04,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:41:04,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:41:04,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837445483] [2023-08-30 07:41:04,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837445483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:41:04,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:41:04,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 07:41:04,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476528779] [2023-08-30 07:41:04,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:41:04,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:41:04,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:41:04,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:41:04,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:41:04,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 153 [2023-08-30 07:41:04,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 37 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:41:04,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 153 [2023-08-30 07:41:04,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:41:04,987 INFO L130 PetriNetUnfolder]: 175/481 cut-off events. [2023-08-30 07:41:04,987 INFO L131 PetriNetUnfolder]: For 456/484 co-relation queries the response was YES. [2023-08-30 07:41:04,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 481 events. 175/481 cut-off events. For 456/484 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2601 event pairs, 31 based on Foata normal form. 34/506 useless extension candidates. Maximal degree in co-relation 1271. Up to 132 conditions per place. [2023-08-30 07:41:04,989 INFO L137 encePairwiseOnDemand]: 146/153 looper letters, 38 selfloop transitions, 8 changer transitions 13/69 dead transitions. [2023-08-30 07:41:04,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 376 flow [2023-08-30 07:41:04,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 07:41:04,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 07:41:04,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 620 transitions. [2023-08-30 07:41:04,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065359477124183 [2023-08-30 07:41:04,991 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 620 transitions. [2023-08-30 07:41:04,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 620 transitions. [2023-08-30 07:41:04,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:41:04,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 620 transitions. [2023-08-30 07:41:04,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,994 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,994 INFO L175 Difference]: Start difference. First operand has 59 places, 37 transitions, 170 flow. Second operand 8 states and 620 transitions. [2023-08-30 07:41:04,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 376 flow [2023-08-30 07:41:04,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 359 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 07:41:04,997 INFO L231 Difference]: Finished difference. Result has 59 places, 35 transitions, 163 flow [2023-08-30 07:41:04,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=163, PETRI_PLACES=59, PETRI_TRANSITIONS=35} [2023-08-30 07:41:04,998 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-08-30 07:41:04,998 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 35 transitions, 163 flow [2023-08-30 07:41:04,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:04,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:41:04,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:41:04,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 07:41:04,999 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:41:04,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:41:04,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1044082315, now seen corresponding path program 5 times [2023-08-30 07:41:04,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:41:04,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342417810] [2023-08-30 07:41:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:41:05,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:41:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:41:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:41:05,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:41:05,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342417810] [2023-08-30 07:41:05,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342417810] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:41:05,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:41:05,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 07:41:05,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481218812] [2023-08-30 07:41:05,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:41:05,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:41:05,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:41:05,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:41:05,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:41:05,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 153 [2023-08-30 07:41:05,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 35 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:41:05,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 153 [2023-08-30 07:41:05,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:41:05,112 INFO L130 PetriNetUnfolder]: 116/351 cut-off events. [2023-08-30 07:41:05,112 INFO L131 PetriNetUnfolder]: For 423/437 co-relation queries the response was YES. [2023-08-30 07:41:05,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 351 events. 116/351 cut-off events. For 423/437 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1805 event pairs, 99 based on Foata normal form. 7/343 useless extension candidates. Maximal degree in co-relation 962. Up to 249 conditions per place. [2023-08-30 07:41:05,114 INFO L137 encePairwiseOnDemand]: 150/153 looper letters, 23 selfloop transitions, 2 changer transitions 2/41 dead transitions. [2023-08-30 07:41:05,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 41 transitions, 242 flow [2023-08-30 07:41:05,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:41:05,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:41:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-08-30 07:41:05,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533769063180828 [2023-08-30 07:41:05,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-08-30 07:41:05,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-08-30 07:41:05,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:41:05,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-08-30 07:41:05,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,118 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,118 INFO L175 Difference]: Start difference. First operand has 59 places, 35 transitions, 163 flow. Second operand 3 states and 254 transitions. [2023-08-30 07:41:05,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 41 transitions, 242 flow [2023-08-30 07:41:05,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 215 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 07:41:05,121 INFO L231 Difference]: Finished difference. Result has 54 places, 35 transitions, 148 flow [2023-08-30 07:41:05,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=54, PETRI_TRANSITIONS=35} [2023-08-30 07:41:05,122 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2023-08-30 07:41:05,122 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 35 transitions, 148 flow [2023-08-30 07:41:05,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:41:05,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:41:05,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 07:41:05,124 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:41:05,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:41:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1489930863, now seen corresponding path program 6 times [2023-08-30 07:41:05,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:41:05,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689437658] [2023-08-30 07:41:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:41:05,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:41:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:41:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:41:05,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:41:05,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689437658] [2023-08-30 07:41:05,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689437658] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:41:05,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:41:05,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 07:41:05,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935770988] [2023-08-30 07:41:05,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:41:05,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:41:05,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:41:05,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:41:05,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:41:05,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 153 [2023-08-30 07:41:05,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 35 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:41:05,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 153 [2023-08-30 07:41:05,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:41:05,355 INFO L130 PetriNetUnfolder]: 93/261 cut-off events. [2023-08-30 07:41:05,356 INFO L131 PetriNetUnfolder]: For 204/208 co-relation queries the response was YES. [2023-08-30 07:41:05,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 261 events. 93/261 cut-off events. For 204/208 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1132 event pairs, 31 based on Foata normal form. 10/264 useless extension candidates. Maximal degree in co-relation 700. Up to 130 conditions per place. [2023-08-30 07:41:05,357 INFO L137 encePairwiseOnDemand]: 146/153 looper letters, 20 selfloop transitions, 3 changer transitions 10/43 dead transitions. [2023-08-30 07:41:05,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 43 transitions, 230 flow [2023-08-30 07:41:05,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:41:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:41:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2023-08-30 07:41:05,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2023-08-30 07:41:05,358 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 384 transitions. [2023-08-30 07:41:05,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 384 transitions. [2023-08-30 07:41:05,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:41:05,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 384 transitions. [2023-08-30 07:41:05,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,360 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,361 INFO L175 Difference]: Start difference. First operand has 54 places, 35 transitions, 148 flow. Second operand 5 states and 384 transitions. [2023-08-30 07:41:05,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 43 transitions, 230 flow [2023-08-30 07:41:05,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 224 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 07:41:05,363 INFO L231 Difference]: Finished difference. Result has 55 places, 29 transitions, 117 flow [2023-08-30 07:41:05,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=55, PETRI_TRANSITIONS=29} [2023-08-30 07:41:05,363 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2023-08-30 07:41:05,363 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 29 transitions, 117 flow [2023-08-30 07:41:05,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:41:05,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:41:05,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 07:41:05,364 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 07:41:05,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:41:05,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1079086249, now seen corresponding path program 7 times [2023-08-30 07:41:05,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 07:41:05,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351662014] [2023-08-30 07:41:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:41:05,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 07:41:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:41:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:41:05,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 07:41:05,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351662014] [2023-08-30 07:41:05,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351662014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:41:05,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:41:05,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 07:41:05,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542748516] [2023-08-30 07:41:05,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:41:05,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:41:05,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 07:41:05,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:41:05,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 07:41:05,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 153 [2023-08-30 07:41:05,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 29 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:41:05,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 153 [2023-08-30 07:41:05,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:41:05,507 INFO L130 PetriNetUnfolder]: 31/86 cut-off events. [2023-08-30 07:41:05,507 INFO L131 PetriNetUnfolder]: For 56/58 co-relation queries the response was YES. [2023-08-30 07:41:05,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 86 events. 31/86 cut-off events. For 56/58 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 245 event pairs, 2 based on Foata normal form. 8/94 useless extension candidates. Maximal degree in co-relation 242. Up to 26 conditions per place. [2023-08-30 07:41:05,508 INFO L137 encePairwiseOnDemand]: 147/153 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-30 07:41:05,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 30 transitions, 164 flow [2023-08-30 07:41:05,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:41:05,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:41:05,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 515 transitions. [2023-08-30 07:41:05,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480859010270775 [2023-08-30 07:41:05,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 515 transitions. [2023-08-30 07:41:05,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 515 transitions. [2023-08-30 07:41:05,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:41:05,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 515 transitions. [2023-08-30 07:41:05,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,513 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,513 INFO L175 Difference]: Start difference. First operand has 55 places, 29 transitions, 117 flow. Second operand 7 states and 515 transitions. [2023-08-30 07:41:05,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 30 transitions, 164 flow [2023-08-30 07:41:05,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 129 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-08-30 07:41:05,514 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-30 07:41:05,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-30 07:41:05,514 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-08-30 07:41:05,515 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-30 07:41:05,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:41:05,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-30 07:41:05,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-30 07:41:05,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-30 07:41:05,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-30 07:41:05,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-30 07:41:05,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-30 07:41:05,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-30 07:41:05,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-30 07:41:05,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-08-30 07:41:05,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-30 07:41:05,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-30 07:41:05,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-30 07:41:05,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 07:41:05,521 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1, 1] [2023-08-30 07:41:05,523 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 07:41:05,523 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 07:41:05,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:41:05 BasicIcfg [2023-08-30 07:41:05,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 07:41:05,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 07:41:05,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 07:41:05,527 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 07:41:05,527 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:41:00" (3/4) ... [2023-08-30 07:41:05,529 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 07:41:05,532 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 07:41:05,532 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 07:41:05,536 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-08-30 07:41:05,536 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 07:41:05,536 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 07:41:05,536 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 07:41:05,557 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 07:41:05,559 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 07:41:05,559 INFO L158 Benchmark]: Toolchain (without parser) took 5429.28ms. Allocated memory was 73.4MB in the beginning and 151.0MB in the end (delta: 77.6MB). Free memory was 45.0MB in the beginning and 82.2MB in the end (delta: -37.3MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2023-08-30 07:41:05,560 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 73.4MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 07:41:05,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 145.48ms. Allocated memory is still 73.4MB. Free memory was 44.8MB in the beginning and 33.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 07:41:05,560 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.05ms. Allocated memory is still 73.4MB. Free memory was 33.7MB in the beginning and 32.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 07:41:05,560 INFO L158 Benchmark]: Boogie Preprocessor took 40.31ms. Allocated memory is still 73.4MB. Free memory was 32.0MB in the beginning and 52.8MB in the end (delta: -20.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 07:41:05,560 INFO L158 Benchmark]: RCFGBuilder took 345.78ms. Allocated memory is still 73.4MB. Free memory was 52.8MB in the beginning and 36.2MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-30 07:41:05,561 INFO L158 Benchmark]: TraceAbstraction took 4835.15ms. Allocated memory was 73.4MB in the beginning and 151.0MB in the end (delta: 77.6MB). Free memory was 35.5MB in the beginning and 84.3MB in the end (delta: -48.8MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2023-08-30 07:41:05,561 INFO L158 Benchmark]: Witness Printer took 32.50ms. Allocated memory is still 151.0MB. Free memory was 84.3MB in the beginning and 82.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 07:41:05,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 73.4MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 145.48ms. Allocated memory is still 73.4MB. Free memory was 44.8MB in the beginning and 33.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.05ms. Allocated memory is still 73.4MB. Free memory was 33.7MB in the beginning and 32.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.31ms. Allocated memory is still 73.4MB. Free memory was 32.0MB in the beginning and 52.8MB in the end (delta: -20.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 345.78ms. Allocated memory is still 73.4MB. Free memory was 52.8MB in the beginning and 36.2MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4835.15ms. Allocated memory was 73.4MB in the beginning and 151.0MB in the end (delta: 77.6MB). Free memory was 35.5MB in the beginning and 84.3MB in the end (delta: -48.8MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * Witness Printer took 32.50ms. Allocated memory is still 151.0MB. Free memory was 84.3MB in the beginning and 82.2MB in the end (delta: 2.1MB). 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: 1.9s, 90 PlacesBefore, 43 PlacesAfterwards, 84 TransitionsBefore, 36 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 4687 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2529, independent: 2294, independent conditional: 0, independent unconditional: 2294, dependent: 235, dependent conditional: 0, dependent unconditional: 235, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 371, independent: 355, independent conditional: 0, independent unconditional: 355, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2529, independent: 1939, independent conditional: 0, independent unconditional: 1939, dependent: 219, dependent conditional: 0, dependent unconditional: 219, unknown: 371, unknown conditional: 0, unknown unconditional: 371] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, 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: 116]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 106]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 116 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 738 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 547 mSDsluCounter, 208 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1298 IncrementalHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 96 mSDtfsCounter, 1298 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=8, InterpolantAutomatonStates: 60, 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, 1.1s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 07:41:05,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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