/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 04:58:55,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 04:58:55,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 04:58:55,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 04:58:55,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 04:58:55,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 04:58:55,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 04:58:55,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 04:58:55,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 04:58:56,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 04:58:56,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 04:58:56,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 04:58:56,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 04:58:56,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 04:58:56,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 04:58:56,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 04:58:56,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 04:58:56,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 04:58:56,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 04:58:56,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 04:58:56,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 04:58:56,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 04:58:56,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 04:58:56,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 04:58:56,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 04:58:56,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 04:58:56,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 04:58:56,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 04:58:56,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 04:58:56,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 04:58:56,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 04:58:56,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 04:58:56,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 04:58:56,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 04:58:56,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 04:58:56,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 04:58:56,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 04:58:56,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 04:58:56,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 04:58:56,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 04:58:56,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 04:58:56,060 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-Before.epf [2022-01-19 04:58:56,087 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 04:58:56,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 04:58:56,088 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 04:58:56,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 04:58:56,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 04:58:56,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 04:58:56,089 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 04:58:56,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 04:58:56,089 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 04:58:56,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 04:58:56,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 04:58:56,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 04:58:56,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 04:58:56,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 04:58:56,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 04:58:56,091 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 04:58:56,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 04:58:56,091 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 04:58:56,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 04:58:56,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 04:58:56,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 04:58:56,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 04:58:56,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 04:58:56,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:58:56,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 04:58:56,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 04:58:56,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 04:58:56,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 04:58:56,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 04:58:56,093 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 04:58:56,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 04:58:56,093 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 04:58:56,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 04:58:56,320 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 04:58:56,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 04:58:56,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 04:58:56,341 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 04:58:56,342 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 04:58:56,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2022-01-19 04:58:56,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce295b668/b7963c513d4f4db7b70edb84286d587a/FLAGeee23a753 [2022-01-19 04:58:56,768 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 04:58:56,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2022-01-19 04:58:56,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce295b668/b7963c513d4f4db7b70edb84286d587a/FLAGeee23a753 [2022-01-19 04:58:57,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce295b668/b7963c513d4f4db7b70edb84286d587a [2022-01-19 04:58:57,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 04:58:57,139 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 04:58:57,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 04:58:57,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 04:58:57,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 04:58:57,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:58:57" (1/1) ... [2022-01-19 04:58:57,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202a335e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:57, skipping insertion in model container [2022-01-19 04:58:57,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 04:58:57" (1/1) ... [2022-01-19 04:58:57,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 04:58:57,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 04:58:57,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.i[945,958] [2022-01-19 04:58:57,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:58:57,458 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 04:58:57,471 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.i[945,958] [2022-01-19 04:58:57,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 04:58:57,563 INFO L208 MainTranslator]: Completed translation [2022-01-19 04:58:57,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:57 WrapperNode [2022-01-19 04:58:57,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 04:58:57,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 04:58:57,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 04:58:57,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 04:58:57,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:57" (1/1) ... [2022-01-19 04:58:57,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:57" (1/1) ... [2022-01-19 04:58:57,627 INFO L137 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-01-19 04:58:57,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 04:58:57,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 04:58:57,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 04:58:57,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 04:58:57,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:57" (1/1) ... [2022-01-19 04:58:57,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:57" (1/1) ... [2022-01-19 04:58:57,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:57" (1/1) ... [2022-01-19 04:58:57,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:57" (1/1) ... [2022-01-19 04:58:57,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:57" (1/1) ... [2022-01-19 04:58:57,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:57" (1/1) ... [2022-01-19 04:58:57,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:57" (1/1) ... [2022-01-19 04:58:57,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 04:58:57,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 04:58:57,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 04:58:57,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 04:58:57,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:57" (1/1) ... [2022-01-19 04:58:57,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 04:58:57,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 04:58:57,757 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) [2022-01-19 04:58:57,770 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 [2022-01-19 04:58:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 04:58:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 04:58:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 04:58:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 04:58:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 04:58:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-01-19 04:58:57,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-01-19 04:58:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-01-19 04:58:57,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-01-19 04:58:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-01-19 04:58:57,802 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-01-19 04:58:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 04:58:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 04:58:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 04:58:57,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 04:58:57,804 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 04:58:57,947 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 04:58:57,948 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 04:58:58,096 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 04:58:58,102 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 04:58:58,102 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 04:58:58,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:58:58 BoogieIcfgContainer [2022-01-19 04:58:58,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 04:58:58,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 04:58:58,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 04:58:58,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 04:58:58,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 04:58:57" (1/3) ... [2022-01-19 04:58:58,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d4a75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:58:58, skipping insertion in model container [2022-01-19 04:58:58,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 04:58:57" (2/3) ... [2022-01-19 04:58:58,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d4a75e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 04:58:58, skipping insertion in model container [2022-01-19 04:58:58,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 04:58:58" (3/3) ... [2022-01-19 04:58:58,110 INFO L111 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2022-01-19 04:58:58,114 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 04:58:58,114 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 04:58:58,114 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 04:58:58,146 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,146 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,146 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,146 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,147 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,147 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,147 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,147 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,148 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,148 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,148 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,148 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,149 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,149 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,149 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,149 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,149 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,149 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,149 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,150 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,150 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,150 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,150 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,151 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,151 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,151 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,151 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,151 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,152 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,152 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,152 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,152 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,153 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,153 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,153 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,153 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,156 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,156 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,156 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,157 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,159 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,159 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,159 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,159 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,160 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,160 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,160 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,161 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 04:58:58,161 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-19 04:58:58,196 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 04:58:58,202 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 04:58:58,202 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 04:58:58,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-01-19 04:58:58,249 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2022-01-19 04:58:58,250 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:58:58,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-01-19 04:58:58,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-01-19 04:58:58,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-01-19 04:58:58,276 INFO L129 PetriNetUnfolder]: 1/74 cut-off events. [2022-01-19 04:58:58,276 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-01-19 04:58:58,276 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:58,277 INFO L254 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, 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, 1] [2022-01-19 04:58:58,277 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:58:58,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:58,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1214845436, now seen corresponding path program 1 times [2022-01-19 04:58:58,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:58,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531652567] [2022-01-19 04:58:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:58,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:58:58,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:58,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531652567] [2022-01-19 04:58:58,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531652567] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:58,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:58,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 04:58:58,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294838903] [2022-01-19 04:58:58,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:58,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 04:58:58,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:58,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 04:58:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 04:58:58,714 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-01-19 04:58:58,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:58,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:58,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-01-19 04:58:58,723 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:59,042 INFO L129 PetriNetUnfolder]: 104/404 cut-off events. [2022-01-19 04:58:59,042 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-01-19 04:58:59,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 404 events. 104/404 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1980 event pairs, 33 based on Foata normal form. 15/406 useless extension candidates. Maximal degree in co-relation 605. Up to 95 conditions per place. [2022-01-19 04:58:59,053 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 20 selfloop transitions, 5 changer transitions 28/111 dead transitions. [2022-01-19 04:58:59,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 111 transitions, 343 flow [2022-01-19 04:58:59,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 04:58:59,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 04:58:59,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 705 transitions. [2022-01-19 04:58:59,079 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8514492753623188 [2022-01-19 04:58:59,079 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 705 transitions. [2022-01-19 04:58:59,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 705 transitions. [2022-01-19 04:58:59,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:59,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 705 transitions. [2022-01-19 04:58:59,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.33333333333333) internal successors, (705), 9 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,097 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,099 INFO L186 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 705 transitions. [2022-01-19 04:58:59,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 111 transitions, 343 flow [2022-01-19 04:58:59,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 111 transitions, 338 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 04:58:59,107 INFO L242 Difference]: Finished difference. Result has 96 places, 77 transitions, 213 flow [2022-01-19 04:58:59,109 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2022-01-19 04:58:59,112 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2022-01-19 04:58:59,112 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 213 flow [2022-01-19 04:58:59,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,113 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:59,113 INFO L254 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, 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, 1, 1, 1] [2022-01-19 04:58:59,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 04:58:59,113 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:58:59,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1299331837, now seen corresponding path program 1 times [2022-01-19 04:58:59,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:59,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404139608] [2022-01-19 04:58:59,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:59,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:59,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:58:59,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:59,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404139608] [2022-01-19 04:58:59,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404139608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:59,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:59,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 04:58:59,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850000751] [2022-01-19 04:58:59,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:59,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 04:58:59,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:59,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 04:58:59,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 04:58:59,228 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2022-01-19 04:58:59,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,229 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:59,229 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2022-01-19 04:58:59,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:59,358 INFO L129 PetriNetUnfolder]: 29/209 cut-off events. [2022-01-19 04:58:59,358 INFO L130 PetriNetUnfolder]: For 232/264 co-relation queries the response was YES. [2022-01-19 04:58:59,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 209 events. 29/209 cut-off events. For 232/264 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 843 event pairs, 16 based on Foata normal form. 4/200 useless extension candidates. Maximal degree in co-relation 433. Up to 47 conditions per place. [2022-01-19 04:58:59,360 INFO L132 encePairwiseOnDemand]: 86/92 looper letters, 9 selfloop transitions, 3 changer transitions 10/87 dead transitions. [2022-01-19 04:58:59,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 87 transitions, 319 flow [2022-01-19 04:58:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 04:58:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 04:58:59,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 716 transitions. [2022-01-19 04:58:59,363 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2022-01-19 04:58:59,363 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 716 transitions. [2022-01-19 04:58:59,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 716 transitions. [2022-01-19 04:58:59,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:59,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 716 transitions. [2022-01-19 04:58:59,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,369 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,369 INFO L186 Difference]: Start difference. First operand has 96 places, 77 transitions, 213 flow. Second operand 9 states and 716 transitions. [2022-01-19 04:58:59,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 87 transitions, 319 flow [2022-01-19 04:58:59,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 87 transitions, 300 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-01-19 04:58:59,375 INFO L242 Difference]: Finished difference. Result has 101 places, 77 transitions, 225 flow [2022-01-19 04:58:59,375 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=225, PETRI_PLACES=101, PETRI_TRANSITIONS=77} [2022-01-19 04:58:59,376 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 17 predicate places. [2022-01-19 04:58:59,376 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 77 transitions, 225 flow [2022-01-19 04:58:59,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,377 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:59,377 INFO L254 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, 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, 1, 1, 1] [2022-01-19 04:58:59,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 04:58:59,377 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:58:59,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:59,378 INFO L85 PathProgramCache]: Analyzing trace with hash 951080603, now seen corresponding path program 1 times [2022-01-19 04:58:59,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:59,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155423797] [2022-01-19 04:58:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:59,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:58:59,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:59,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155423797] [2022-01-19 04:58:59,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155423797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:59,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:59,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:58:59,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171923007] [2022-01-19 04:58:59,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:59,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:58:59,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:59,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:58:59,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:58:59,558 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-01-19 04:58:59,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 77 transitions, 225 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:59,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-01-19 04:58:59,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:58:59,792 INFO L129 PetriNetUnfolder]: 55/286 cut-off events. [2022-01-19 04:58:59,792 INFO L130 PetriNetUnfolder]: For 425/474 co-relation queries the response was YES. [2022-01-19 04:58:59,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 286 events. 55/286 cut-off events. For 425/474 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1180 event pairs, 9 based on Foata normal form. 10/288 useless extension candidates. Maximal degree in co-relation 688. Up to 55 conditions per place. [2022-01-19 04:58:59,796 INFO L132 encePairwiseOnDemand]: 83/92 looper letters, 19 selfloop transitions, 8 changer transitions 28/113 dead transitions. [2022-01-19 04:58:59,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 113 transitions, 545 flow [2022-01-19 04:58:59,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 04:58:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 04:58:59,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 993 transitions. [2022-01-19 04:58:59,799 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.830267558528428 [2022-01-19 04:58:59,799 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 993 transitions. [2022-01-19 04:58:59,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 993 transitions. [2022-01-19 04:58:59,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:58:59,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 993 transitions. [2022-01-19 04:58:59,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.38461538461539) internal successors, (993), 13 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,805 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,805 INFO L186 Difference]: Start difference. First operand has 101 places, 77 transitions, 225 flow. Second operand 13 states and 993 transitions. [2022-01-19 04:58:59,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 113 transitions, 545 flow [2022-01-19 04:58:59,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 113 transitions, 483 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-01-19 04:58:59,811 INFO L242 Difference]: Finished difference. Result has 109 places, 79 transitions, 253 flow [2022-01-19 04:58:59,811 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=253, PETRI_PLACES=109, PETRI_TRANSITIONS=79} [2022-01-19 04:58:59,812 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 25 predicate places. [2022-01-19 04:58:59,812 INFO L470 AbstractCegarLoop]: Abstraction has has 109 places, 79 transitions, 253 flow [2022-01-19 04:58:59,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,812 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:58:59,813 INFO L254 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, 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, 1, 1, 1, 1, 1] [2022-01-19 04:58:59,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 04:58:59,813 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:58:59,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:58:59,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1259207806, now seen corresponding path program 1 times [2022-01-19 04:58:59,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:58:59,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420470450] [2022-01-19 04:58:59,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:58:59,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:58:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:58:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:58:59,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:58:59,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420470450] [2022-01-19 04:58:59,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420470450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:58:59,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:58:59,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:58:59,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075587032] [2022-01-19 04:58:59,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:58:59,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:58:59,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:58:59,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:58:59,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:58:59,919 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-01-19 04:58:59,919 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 79 transitions, 253 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:58:59,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:58:59,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-01-19 04:58:59,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:00,233 INFO L129 PetriNetUnfolder]: 162/523 cut-off events. [2022-01-19 04:59:00,233 INFO L130 PetriNetUnfolder]: For 1093/1439 co-relation queries the response was YES. [2022-01-19 04:59:00,236 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1518 conditions, 523 events. 162/523 cut-off events. For 1093/1439 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2835 event pairs, 0 based on Foata normal form. 12/521 useless extension candidates. Maximal degree in co-relation 1464. Up to 88 conditions per place. [2022-01-19 04:59:00,239 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 37 selfloop transitions, 19 changer transitions 44/156 dead transitions. [2022-01-19 04:59:00,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 156 transitions, 978 flow [2022-01-19 04:59:00,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 04:59:00,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 04:59:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1279 transitions. [2022-01-19 04:59:00,244 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8177749360613811 [2022-01-19 04:59:00,244 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1279 transitions. [2022-01-19 04:59:00,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1279 transitions. [2022-01-19 04:59:00,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:00,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1279 transitions. [2022-01-19 04:59:00,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 75.23529411764706) internal successors, (1279), 17 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,252 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 92.0) internal successors, (1656), 18 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,252 INFO L186 Difference]: Start difference. First operand has 109 places, 79 transitions, 253 flow. Second operand 17 states and 1279 transitions. [2022-01-19 04:59:00,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 156 transitions, 978 flow [2022-01-19 04:59:00,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 156 transitions, 846 flow, removed 66 selfloop flow, removed 9 redundant places. [2022-01-19 04:59:00,262 INFO L242 Difference]: Finished difference. Result has 123 places, 92 transitions, 465 flow [2022-01-19 04:59:00,263 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=465, PETRI_PLACES=123, PETRI_TRANSITIONS=92} [2022-01-19 04:59:00,264 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 39 predicate places. [2022-01-19 04:59:00,264 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 92 transitions, 465 flow [2022-01-19 04:59:00,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,265 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:00,265 INFO L254 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, 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, 1, 1, 1, 1, 1] [2022-01-19 04:59:00,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 04:59:00,265 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:00,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:00,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1276075708, now seen corresponding path program 2 times [2022-01-19 04:59:00,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:00,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265265435] [2022-01-19 04:59:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:00,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:00,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:00,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:00,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265265435] [2022-01-19 04:59:00,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265265435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:00,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:00,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 04:59:00,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519839074] [2022-01-19 04:59:00,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:00,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 04:59:00,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:00,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 04:59:00,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 04:59:00,446 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-01-19 04:59:00,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 92 transitions, 465 flow. Second operand has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:00,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-01-19 04:59:00,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:00,647 INFO L129 PetriNetUnfolder]: 112/454 cut-off events. [2022-01-19 04:59:00,647 INFO L130 PetriNetUnfolder]: For 3583/4049 co-relation queries the response was YES. [2022-01-19 04:59:00,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1879 conditions, 454 events. 112/454 cut-off events. For 3583/4049 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2416 event pairs, 9 based on Foata normal form. 18/455 useless extension candidates. Maximal degree in co-relation 1814. Up to 85 conditions per place. [2022-01-19 04:59:00,652 INFO L132 encePairwiseOnDemand]: 81/92 looper letters, 22 selfloop transitions, 10 changer transitions 48/136 dead transitions. [2022-01-19 04:59:00,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 136 transitions, 1168 flow [2022-01-19 04:59:00,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 04:59:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 04:59:00,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 827 transitions. [2022-01-19 04:59:00,655 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.817193675889328 [2022-01-19 04:59:00,655 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 827 transitions. [2022-01-19 04:59:00,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 827 transitions. [2022-01-19 04:59:00,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:00,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 827 transitions. [2022-01-19 04:59:00,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 75.18181818181819) internal successors, (827), 11 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,660 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,661 INFO L186 Difference]: Start difference. First operand has 123 places, 92 transitions, 465 flow. Second operand 11 states and 827 transitions. [2022-01-19 04:59:00,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 136 transitions, 1168 flow [2022-01-19 04:59:00,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 136 transitions, 966 flow, removed 101 selfloop flow, removed 9 redundant places. [2022-01-19 04:59:00,672 INFO L242 Difference]: Finished difference. Result has 120 places, 81 transitions, 341 flow [2022-01-19 04:59:00,672 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=341, PETRI_PLACES=120, PETRI_TRANSITIONS=81} [2022-01-19 04:59:00,674 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 36 predicate places. [2022-01-19 04:59:00,674 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 81 transitions, 341 flow [2022-01-19 04:59:00,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.875) internal successors, (575), 8 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,675 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:00,675 INFO L254 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:00,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 04:59:00,675 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:00,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash 496618915, now seen corresponding path program 1 times [2022-01-19 04:59:00,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:00,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099576401] [2022-01-19 04:59:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:00,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:00,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:00,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099576401] [2022-01-19 04:59:00,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099576401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:00,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:00,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 04:59:00,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382506732] [2022-01-19 04:59:00,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:00,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 04:59:00,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:00,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 04:59:00,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 04:59:00,808 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 04:59:00,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 81 transitions, 341 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:00,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 04:59:00,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:00,970 INFO L129 PetriNetUnfolder]: 311/849 cut-off events. [2022-01-19 04:59:00,970 INFO L130 PetriNetUnfolder]: For 790/838 co-relation queries the response was YES. [2022-01-19 04:59:00,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1870 conditions, 849 events. 311/849 cut-off events. For 790/838 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5591 event pairs, 12 based on Foata normal form. 0/769 useless extension candidates. Maximal degree in co-relation 1845. Up to 218 conditions per place. [2022-01-19 04:59:00,979 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 29 selfloop transitions, 17 changer transitions 0/113 dead transitions. [2022-01-19 04:59:00,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 113 transitions, 501 flow [2022-01-19 04:59:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 04:59:00,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 04:59:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2022-01-19 04:59:00,982 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2022-01-19 04:59:00,982 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2022-01-19 04:59:00,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2022-01-19 04:59:00,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:00,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2022-01-19 04:59:00,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,987 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,987 INFO L186 Difference]: Start difference. First operand has 120 places, 81 transitions, 341 flow. Second operand 10 states and 798 transitions. [2022-01-19 04:59:00,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 113 transitions, 501 flow [2022-01-19 04:59:00,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 113 transitions, 420 flow, removed 13 selfloop flow, removed 16 redundant places. [2022-01-19 04:59:00,993 INFO L242 Difference]: Finished difference. Result has 113 places, 96 transitions, 380 flow [2022-01-19 04:59:00,993 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=380, PETRI_PLACES=113, PETRI_TRANSITIONS=96} [2022-01-19 04:59:00,995 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2022-01-19 04:59:00,995 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 96 transitions, 380 flow [2022-01-19 04:59:00,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:00,996 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:00,996 INFO L254 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:00,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 04:59:00,997 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:01,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:01,000 INFO L85 PathProgramCache]: Analyzing trace with hash -866690478, now seen corresponding path program 1 times [2022-01-19 04:59:01,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:01,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737159332] [2022-01-19 04:59:01,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:01,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:01,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:01,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737159332] [2022-01-19 04:59:01,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737159332] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:01,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:01,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:59:01,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954554064] [2022-01-19 04:59:01,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:01,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:59:01,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:01,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:59:01,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:59:01,107 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 04:59:01,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 96 transitions, 380 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:01,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:01,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 04:59:01,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:01,312 INFO L129 PetriNetUnfolder]: 305/850 cut-off events. [2022-01-19 04:59:01,312 INFO L130 PetriNetUnfolder]: For 1826/2009 co-relation queries the response was YES. [2022-01-19 04:59:01,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2816 conditions, 850 events. 305/850 cut-off events. For 1826/2009 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5768 event pairs, 2 based on Foata normal form. 60/857 useless extension candidates. Maximal degree in co-relation 2797. Up to 314 conditions per place. [2022-01-19 04:59:01,319 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 32 changer transitions 9/134 dead transitions. [2022-01-19 04:59:01,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 134 transitions, 750 flow [2022-01-19 04:59:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 04:59:01,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 04:59:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1038 transitions. [2022-01-19 04:59:01,322 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8678929765886287 [2022-01-19 04:59:01,322 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1038 transitions. [2022-01-19 04:59:01,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1038 transitions. [2022-01-19 04:59:01,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:01,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1038 transitions. [2022-01-19 04:59:01,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.84615384615384) internal successors, (1038), 13 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:01,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:01,328 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:01,328 INFO L186 Difference]: Start difference. First operand has 113 places, 96 transitions, 380 flow. Second operand 13 states and 1038 transitions. [2022-01-19 04:59:01,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 134 transitions, 750 flow [2022-01-19 04:59:01,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 134 transitions, 741 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-19 04:59:01,334 INFO L242 Difference]: Finished difference. Result has 127 places, 116 transitions, 614 flow [2022-01-19 04:59:01,335 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=614, PETRI_PLACES=127, PETRI_TRANSITIONS=116} [2022-01-19 04:59:01,335 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 43 predicate places. [2022-01-19 04:59:01,335 INFO L470 AbstractCegarLoop]: Abstraction has has 127 places, 116 transitions, 614 flow [2022-01-19 04:59:01,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:01,336 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:01,336 INFO L254 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:01,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 04:59:01,336 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:01,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:01,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1285319411, now seen corresponding path program 1 times [2022-01-19 04:59:01,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:01,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288507609] [2022-01-19 04:59:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:01,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:01,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:01,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288507609] [2022-01-19 04:59:01,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288507609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:01,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:01,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 04:59:01,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407351883] [2022-01-19 04:59:01,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:01,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 04:59:01,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:01,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 04:59:01,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-19 04:59:01,456 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-01-19 04:59:01,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 116 transitions, 614 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 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) [2022-01-19 04:59:01,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:01,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-01-19 04:59:01,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:01,709 INFO L129 PetriNetUnfolder]: 232/736 cut-off events. [2022-01-19 04:59:01,709 INFO L130 PetriNetUnfolder]: For 2698/2898 co-relation queries the response was YES. [2022-01-19 04:59:01,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2895 conditions, 736 events. 232/736 cut-off events. For 2698/2898 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5381 event pairs, 2 based on Foata normal form. 54/737 useless extension candidates. Maximal degree in co-relation 2873. Up to 242 conditions per place. [2022-01-19 04:59:01,716 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 20 selfloop transitions, 36 changer transitions 22/145 dead transitions. [2022-01-19 04:59:01,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 145 transitions, 956 flow [2022-01-19 04:59:01,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 04:59:01,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 04:59:01,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1262 transitions. [2022-01-19 04:59:01,720 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8573369565217391 [2022-01-19 04:59:01,720 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1262 transitions. [2022-01-19 04:59:01,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1262 transitions. [2022-01-19 04:59:01,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:01,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1262 transitions. [2022-01-19 04:59:01,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.875) internal successors, (1262), 16 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:01,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:01,726 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:01,726 INFO L186 Difference]: Start difference. First operand has 127 places, 116 transitions, 614 flow. Second operand 16 states and 1262 transitions. [2022-01-19 04:59:01,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 145 transitions, 956 flow [2022-01-19 04:59:01,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 145 transitions, 799 flow, removed 64 selfloop flow, removed 7 redundant places. [2022-01-19 04:59:01,738 INFO L242 Difference]: Finished difference. Result has 142 places, 116 transitions, 607 flow [2022-01-19 04:59:01,738 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=607, PETRI_PLACES=142, PETRI_TRANSITIONS=116} [2022-01-19 04:59:01,739 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 58 predicate places. [2022-01-19 04:59:01,739 INFO L470 AbstractCegarLoop]: Abstraction has has 142 places, 116 transitions, 607 flow [2022-01-19 04:59:01,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 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) [2022-01-19 04:59:01,740 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 04:59:01,740 INFO L254 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:01,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 04:59:01,740 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 04:59:01,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 04:59:01,740 INFO L85 PathProgramCache]: Analyzing trace with hash 947651838, now seen corresponding path program 1 times [2022-01-19 04:59:01,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 04:59:01,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793259094] [2022-01-19 04:59:01,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 04:59:01,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 04:59:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 04:59:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 04:59:01,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 04:59:01,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793259094] [2022-01-19 04:59:01,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793259094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 04:59:01,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 04:59:01,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 04:59:01,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103221943] [2022-01-19 04:59:01,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 04:59:01,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 04:59:01,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 04:59:01,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 04:59:01,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 04:59:01,815 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-01-19 04:59:01,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 116 transitions, 607 flow. Second operand has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:01,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 04:59:01,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-01-19 04:59:01,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 04:59:01,954 INFO L129 PetriNetUnfolder]: 150/700 cut-off events. [2022-01-19 04:59:01,954 INFO L130 PetriNetUnfolder]: For 1437/1463 co-relation queries the response was YES. [2022-01-19 04:59:01,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2026 conditions, 700 events. 150/700 cut-off events. For 1437/1463 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5350 event pairs, 2 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 2000. Up to 74 conditions per place. [2022-01-19 04:59:01,959 INFO L132 encePairwiseOnDemand]: 82/92 looper letters, 0 selfloop transitions, 0 changer transitions 123/123 dead transitions. [2022-01-19 04:59:01,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 123 transitions, 720 flow [2022-01-19 04:59:01,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 04:59:01,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 04:59:01,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 589 transitions. [2022-01-19 04:59:01,961 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8002717391304348 [2022-01-19 04:59:01,961 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 589 transitions. [2022-01-19 04:59:01,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 589 transitions. [2022-01-19 04:59:01,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 04:59:01,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 589 transitions. [2022-01-19 04:59:01,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 73.625) internal successors, (589), 8 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:01,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:01,965 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:01,965 INFO L186 Difference]: Start difference. First operand has 142 places, 116 transitions, 607 flow. Second operand 8 states and 589 transitions. [2022-01-19 04:59:01,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 123 transitions, 720 flow [2022-01-19 04:59:01,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 123 transitions, 639 flow, removed 16 selfloop flow, removed 14 redundant places. [2022-01-19 04:59:01,976 INFO L242 Difference]: Finished difference. Result has 130 places, 0 transitions, 0 flow [2022-01-19 04:59:01,976 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=130, PETRI_TRANSITIONS=0} [2022-01-19 04:59:01,976 INFO L334 CegarLoopForPetriNet]: 84 programPoint places, 46 predicate places. [2022-01-19 04:59:01,976 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 0 transitions, 0 flow [2022-01-19 04:59:01,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.57142857142857) internal successors, (508), 7 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 04:59:01,979 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 04:59:01,979 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 04:59:01,979 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 04:59:01,979 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 04:59:01,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 04:59:01,982 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 04:59:01,984 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 04:59:01,985 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 04:59:01,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 04:59:01 BasicIcfg [2022-01-19 04:59:01,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 04:59:01,988 INFO L158 Benchmark]: Toolchain (without parser) took 4848.57ms. Allocated memory was 390.1MB in the beginning and 541.1MB in the end (delta: 151.0MB). Free memory was 330.9MB in the beginning and 228.8MB in the end (delta: 102.2MB). Peak memory consumption was 253.7MB. Max. memory is 16.0GB. [2022-01-19 04:59:01,988 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 390.1MB. Free memory is still 348.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 04:59:01,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.83ms. Allocated memory was 390.1MB in the beginning and 541.1MB in the end (delta: 151.0MB). Free memory was 330.8MB in the beginning and 500.8MB in the end (delta: -170.0MB). Peak memory consumption was 6.6MB. Max. memory is 16.0GB. [2022-01-19 04:59:01,989 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.45ms. Allocated memory is still 541.1MB. Free memory was 499.8MB in the beginning and 498.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 04:59:01,989 INFO L158 Benchmark]: Boogie Preprocessor took 29.39ms. Allocated memory is still 541.1MB. Free memory was 498.7MB in the beginning and 496.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 04:59:01,989 INFO L158 Benchmark]: RCFGBuilder took 446.02ms. Allocated memory is still 541.1MB. Free memory was 496.6MB in the beginning and 481.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 04:59:01,989 INFO L158 Benchmark]: TraceAbstraction took 3881.71ms. Allocated memory is still 541.1MB. Free memory was 481.9MB in the beginning and 228.8MB in the end (delta: 253.2MB). Peak memory consumption was 254.2MB. Max. memory is 16.0GB. [2022-01-19 04:59:01,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 390.1MB. Free memory is still 348.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 421.83ms. Allocated memory was 390.1MB in the beginning and 541.1MB in the end (delta: 151.0MB). Free memory was 330.8MB in the beginning and 500.8MB in the end (delta: -170.0MB). Peak memory consumption was 6.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 61.45ms. Allocated memory is still 541.1MB. Free memory was 499.8MB in the beginning and 498.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.39ms. Allocated memory is still 541.1MB. Free memory was 498.7MB in the beginning and 496.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 446.02ms. Allocated memory is still 541.1MB. Free memory was 496.6MB in the beginning and 481.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3881.71ms. Allocated memory is still 541.1MB. Free memory was 481.9MB in the beginning and 228.8MB in the end (delta: 253.2MB). Peak memory consumption was 254.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 392 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 392 mSDsluCounter, 530 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 520 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 540 IncrementalHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 130 mSDtfsCounter, 540 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614occurred in iteration=7, InterpolantAutomatonStates: 106, 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, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 544 NumberOfCodeBlocks, 544 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 535 ConstructedInterpolants, 0 QuantifiedInterpolants, 2191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 04:59:02,023 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...