/usr/bin/java -Xmx8000000000 -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-RepeatedSemanticLbeWithPredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-13 10:32:03,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 10:32:03,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 10:32:03,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 10:32:03,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 10:32:03,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 10:32:03,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 10:32:03,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 10:32:03,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 10:32:03,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 10:32:03,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 10:32:03,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 10:32:03,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 10:32:03,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 10:32:03,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 10:32:03,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 10:32:03,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 10:32:03,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 10:32:03,297 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 10:32:03,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 10:32:03,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 10:32:03,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 10:32:03,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 10:32:03,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 10:32:03,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 10:32:03,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 10:32:03,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 10:32:03,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 10:32:03,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 10:32:03,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 10:32:03,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 10:32:03,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 10:32:03,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 10:32:03,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 10:32:03,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 10:32:03,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 10:32:03,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 10:32:03,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 10:32:03,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 10:32:03,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 10:32:03,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 10:32:03,319 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-RepeatedSemanticLbeWithPredicates.epf [2022-12-13 10:32:03,353 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 10:32:03,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 10:32:03,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 10:32:03,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 10:32:03,355 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 10:32:03,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 10:32:03,356 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 10:32:03,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 10:32:03,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 10:32:03,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 10:32:03,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 10:32:03,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 10:32:03,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 10:32:03,357 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 10:32:03,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 10:32:03,357 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 10:32:03,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 10:32:03,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 10:32:03,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 10:32:03,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-13 10:32:03,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 10:32:03,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:32:03,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 10:32:03,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 10:32:03,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 10:32:03,358 INFO L138 SettingsManager]: * Use conditional commutativity for large block encoding in concurrent analysis=CONDITIONAL_CONJUNCTIVE [2022-12-13 10:32:03,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 10:32:03,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 10:32:03,358 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-13 10:32:03,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-13 10:32:03,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 10:32:03,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 10:32:03,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 10:32:03,662 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 10:32:03,663 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 10:32:03,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-12-13 10:32:04,756 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 10:32:04,919 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 10:32:04,919 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c [2022-12-13 10:32:04,945 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b95c53f46/27c47048b5a64172a90fd1b8bb3796a9/FLAGd7277b9b4 [2022-12-13 10:32:04,959 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b95c53f46/27c47048b5a64172a90fd1b8bb3796a9 [2022-12-13 10:32:04,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 10:32:04,963 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-13 10:32:04,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 10:32:04,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 10:32:04,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 10:32:04,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:32:04" (1/1) ... [2022-12-13 10:32:04,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b1395b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:04, skipping insertion in model container [2022-12-13 10:32:04,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:32:04" (1/1) ... [2022-12-13 10:32:04,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 10:32:04,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 10:32:05,118 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,122 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,125 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,129 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,130 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,133 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,140 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,141 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,142 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,143 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,144 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,145 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,147 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,149 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,150 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,159 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-12-13 10:32:05,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:32:05,178 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 10:32:05,189 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,190 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,191 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,192 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,193 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,195 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,197 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,198 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,199 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,200 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,201 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,202 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,203 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 10:32:05,203 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 10:32:05,206 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1-dsl.wvr.c[4372,4385] [2022-12-13 10:32:05,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:32:05,219 INFO L208 MainTranslator]: Completed translation [2022-12-13 10:32:05,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:05 WrapperNode [2022-12-13 10:32:05,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 10:32:05,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 10:32:05,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 10:32:05,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 10:32:05,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:05" (1/1) ... [2022-12-13 10:32:05,233 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:05" (1/1) ... [2022-12-13 10:32:05,259 INFO L138 Inliner]: procedures = 29, calls = 95, calls flagged for inlining = 21, calls inlined = 27, statements flattened = 289 [2022-12-13 10:32:05,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 10:32:05,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 10:32:05,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 10:32:05,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 10:32:05,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:05" (1/1) ... [2022-12-13 10:32:05,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:05" (1/1) ... [2022-12-13 10:32:05,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:05" (1/1) ... [2022-12-13 10:32:05,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:05" (1/1) ... [2022-12-13 10:32:05,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:05" (1/1) ... [2022-12-13 10:32:05,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:05" (1/1) ... [2022-12-13 10:32:05,281 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:05" (1/1) ... [2022-12-13 10:32:05,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:05" (1/1) ... [2022-12-13 10:32:05,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 10:32:05,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 10:32:05,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 10:32:05,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 10:32:05,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:05" (1/1) ... [2022-12-13 10:32:05,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 10:32:05,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 10:32:05,308 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) [2022-12-13 10:32:05,318 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 [2022-12-13 10:32:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 10:32:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 10:32:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 10:32:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 10:32:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 10:32:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 10:32:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 10:32:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 10:32:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 10:32:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 10:32:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 10:32:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 10:32:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 10:32:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-12-13 10:32:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-12-13 10:32:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-12-13 10:32:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-12-13 10:32:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 10:32:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 10:32:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 10:32:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 10:32:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 10:32:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 10:32:05,359 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-13 10:32:05,449 INFO L236 CfgBuilder]: Building ICFG [2022-12-13 10:32:05,451 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 10:32:05,885 INFO L277 CfgBuilder]: Performing block encoding [2022-12-13 10:32:06,053 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 10:32:06,054 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 10:32:06,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:32:06 BoogieIcfgContainer [2022-12-13 10:32:06,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 10:32:06,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 10:32:06,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 10:32:06,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 10:32:06,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:32:04" (1/3) ... [2022-12-13 10:32:06,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3979383a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:32:06, skipping insertion in model container [2022-12-13 10:32:06,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:32:05" (2/3) ... [2022-12-13 10:32:06,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3979383a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:32:06, skipping insertion in model container [2022-12-13 10:32:06,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:32:06" (3/3) ... [2022-12-13 10:32:06,077 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1-dsl.wvr.c [2022-12-13 10:32:06,103 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 10:32:06,103 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 10:32:06,103 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 10:32:06,192 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-12-13 10:32:06,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 248 transitions, 568 flow [2022-12-13 10:32:06,304 INFO L130 PetriNetUnfolder]: 18/220 cut-off events. [2022-12-13 10:32:06,305 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 10:32:06,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 220 events. 18/220 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 190. Up to 3 conditions per place. [2022-12-13 10:32:06,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 248 transitions, 568 flow [2022-12-13 10:32:06,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 213 places, 212 transitions, 472 flow [2022-12-13 10:32:06,319 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:32:06,331 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 213 places, 212 transitions, 472 flow [2022-12-13 10:32:06,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 212 transitions, 472 flow [2022-12-13 10:32:06,381 INFO L130 PetriNetUnfolder]: 18/212 cut-off events. [2022-12-13 10:32:06,381 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 10:32:06,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 212 events. 18/212 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 280 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 190. Up to 3 conditions per place. [2022-12-13 10:32:06,389 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 213 places, 212 transitions, 472 flow [2022-12-13 10:32:06,389 INFO L226 LiptonReduction]: Number of co-enabled transitions 7312 [2022-12-13 10:32:12,388 INFO L241 LiptonReduction]: Total number of compositions: 151 [2022-12-13 10:32:12,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 10:32:12,419 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=REPEATED_LIPTON_PN, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@34e4ab84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_CONJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-13 10:32:12,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-13 10:32:12,426 INFO L130 PetriNetUnfolder]: 9/60 cut-off events. [2022-12-13 10:32:12,427 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 10:32:12,427 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:32:12,428 INFO L214 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] [2022-12-13 10:32:12,429 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 10:32:12,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:32:12,432 INFO L85 PathProgramCache]: Analyzing trace with hash -482795550, now seen corresponding path program 1 times [2022-12-13 10:32:12,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:32:12,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372585317] [2022-12-13 10:32:12,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:32:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:32:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:32:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:32:13,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:32:13,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372585317] [2022-12-13 10:32:13,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372585317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:32:13,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:32:13,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:32:13,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570309475] [2022-12-13 10:32:13,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:32:13,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:32:13,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:32:13,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:32:13,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:32:13,045 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-13 10:32:13,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:13,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:32:13,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-13 10:32:13,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:32:15,858 INFO L130 PetriNetUnfolder]: 28944/36855 cut-off events. [2022-12-13 10:32:15,859 INFO L131 PetriNetUnfolder]: For 4966/4966 co-relation queries the response was YES. [2022-12-13 10:32:15,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79913 conditions, 36855 events. 28944/36855 cut-off events. For 4966/4966 co-relation queries the response was YES. Maximal size of possible extension queue 900. Compared 169829 event pairs, 12531 based on Foata normal form. 1/28136 useless extension candidates. Maximal degree in co-relation 78348. Up to 14539 conditions per place. [2022-12-13 10:32:16,072 INFO L137 encePairwiseOnDemand]: 54/61 looper letters, 115 selfloop transitions, 8 changer transitions 1/138 dead transitions. [2022-12-13 10:32:16,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 138 transitions, 653 flow [2022-12-13 10:32:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:32:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:32:16,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2022-12-13 10:32:16,085 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7418032786885246 [2022-12-13 10:32:16,086 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 170 flow. Second operand 4 states and 181 transitions. [2022-12-13 10:32:16,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 138 transitions, 653 flow [2022-12-13 10:32:16,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 138 transitions, 567 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-12-13 10:32:16,195 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 191 flow [2022-12-13 10:32:16,196 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=64, PETRI_TRANSITIONS=68} [2022-12-13 10:32:16,200 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2022-12-13 10:32:16,200 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 10:32:16,201 INFO L89 Accepts]: Start accepts. Operand has 64 places, 68 transitions, 191 flow [2022-12-13 10:32:16,208 INFO L95 Accepts]: Finished accepts. [2022-12-13 10:32:16,208 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:32:16,208 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 68 transitions, 191 flow [2022-12-13 10:32:16,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 68 transitions, 191 flow [2022-12-13 10:32:16,242 INFO L130 PetriNetUnfolder]: 60/214 cut-off events. [2022-12-13 10:32:16,242 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 10:32:16,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 214 events. 60/214 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 821 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 254. Up to 25 conditions per place. [2022-12-13 10:32:16,247 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 68 transitions, 191 flow [2022-12-13 10:32:16,248 INFO L226 LiptonReduction]: Number of co-enabled transitions 2062 [2022-12-13 10:32:16,290 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 10:32:16,291 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 91 [2022-12-13 10:32:16,291 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 191 flow [2022-12-13 10:32:16,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:16,291 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:32:16,292 INFO L214 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] [2022-12-13 10:32:16,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 10:32:16,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 10:32:16,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:32:16,293 INFO L85 PathProgramCache]: Analyzing trace with hash -292667862, now seen corresponding path program 2 times [2022-12-13 10:32:16,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:32:16,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079384577] [2022-12-13 10:32:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:32:16,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:32:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:32:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:32:16,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:32:16,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079384577] [2022-12-13 10:32:16,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079384577] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:32:16,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:32:16,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:32:16,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350103210] [2022-12-13 10:32:16,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:32:16,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:32:16,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:32:16,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:32:16,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:32:16,491 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-13 10:32:16,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:16,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:32:16,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-13 10:32:16,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:32:20,330 INFO L130 PetriNetUnfolder]: 47660/60437 cut-off events. [2022-12-13 10:32:20,330 INFO L131 PetriNetUnfolder]: For 13244/13244 co-relation queries the response was YES. [2022-12-13 10:32:20,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138616 conditions, 60437 events. 47660/60437 cut-off events. For 13244/13244 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 291125 event pairs, 22018 based on Foata normal form. 1/45972 useless extension candidates. Maximal degree in co-relation 49495. Up to 27089 conditions per place. [2022-12-13 10:32:20,584 INFO L137 encePairwiseOnDemand]: 54/61 looper letters, 121 selfloop transitions, 11 changer transitions 1/147 dead transitions. [2022-12-13 10:32:20,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 147 transitions, 666 flow [2022-12-13 10:32:20,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:32:20,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:32:20,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2022-12-13 10:32:20,586 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.75 [2022-12-13 10:32:20,586 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 191 flow. Second operand 4 states and 183 transitions. [2022-12-13 10:32:20,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 147 transitions, 666 flow [2022-12-13 10:32:20,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 147 transitions, 666 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 10:32:20,591 INFO L231 Difference]: Finished difference. Result has 69 places, 75 transitions, 270 flow [2022-12-13 10:32:20,591 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=69, PETRI_TRANSITIONS=75} [2022-12-13 10:32:20,592 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, -2 predicate places. [2022-12-13 10:32:20,592 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 10:32:20,592 INFO L89 Accepts]: Start accepts. Operand has 69 places, 75 transitions, 270 flow [2022-12-13 10:32:20,593 INFO L95 Accepts]: Finished accepts. [2022-12-13 10:32:20,593 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:32:20,593 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 75 transitions, 270 flow [2022-12-13 10:32:20,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 75 transitions, 270 flow [2022-12-13 10:32:20,613 INFO L130 PetriNetUnfolder]: 69/240 cut-off events. [2022-12-13 10:32:20,614 INFO L131 PetriNetUnfolder]: For 70/77 co-relation queries the response was YES. [2022-12-13 10:32:20,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 240 events. 69/240 cut-off events. For 70/77 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1010 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 339. Up to 32 conditions per place. [2022-12-13 10:32:20,617 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 75 transitions, 270 flow [2022-12-13 10:32:20,617 INFO L226 LiptonReduction]: Number of co-enabled transitions 2434 [2022-12-13 10:32:20,627 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 10:32:20,628 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 36 [2022-12-13 10:32:20,628 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 75 transitions, 270 flow [2022-12-13 10:32:20,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:20,628 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:32:20,628 INFO L214 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] [2022-12-13 10:32:20,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 10:32:20,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 10:32:20,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:32:20,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1010819651, now seen corresponding path program 1 times [2022-12-13 10:32:20,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:32:20,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523237238] [2022-12-13 10:32:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:32:20,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:32:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:32:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:32:20,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:32:20,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523237238] [2022-12-13 10:32:20,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523237238] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:32:20,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:32:20,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:32:20,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211430493] [2022-12-13 10:32:20,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:32:20,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:32:20,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:32:20,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:32:20,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:32:20,851 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-13 10:32:20,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 75 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:20,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:32:20,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-13 10:32:20,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:32:25,861 INFO L130 PetriNetUnfolder]: 60023/77016 cut-off events. [2022-12-13 10:32:25,862 INFO L131 PetriNetUnfolder]: For 41849/41849 co-relation queries the response was YES. [2022-12-13 10:32:25,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190964 conditions, 77016 events. 60023/77016 cut-off events. For 41849/41849 co-relation queries the response was YES. Maximal size of possible extension queue 1870. Compared 405046 event pairs, 23780 based on Foata normal form. 0/61436 useless extension candidates. Maximal degree in co-relation 80087. Up to 35390 conditions per place. [2022-12-13 10:32:26,354 INFO L137 encePairwiseOnDemand]: 53/61 looper letters, 165 selfloop transitions, 7 changer transitions 0/186 dead transitions. [2022-12-13 10:32:26,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 186 transitions, 1021 flow [2022-12-13 10:32:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:32:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:32:26,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2022-12-13 10:32:26,358 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6174863387978142 [2022-12-13 10:32:26,358 INFO L175 Difference]: Start difference. First operand has 69 places, 75 transitions, 270 flow. Second operand 6 states and 226 transitions. [2022-12-13 10:32:26,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 186 transitions, 1021 flow [2022-12-13 10:32:26,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 186 transitions, 1013 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-12-13 10:32:26,377 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 338 flow [2022-12-13 10:32:26,378 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=338, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2022-12-13 10:32:26,378 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 8 predicate places. [2022-12-13 10:32:26,378 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 10:32:26,378 INFO L89 Accepts]: Start accepts. Operand has 79 places, 81 transitions, 338 flow [2022-12-13 10:32:26,380 INFO L95 Accepts]: Finished accepts. [2022-12-13 10:32:26,380 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:32:26,380 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 81 transitions, 338 flow [2022-12-13 10:32:26,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 81 transitions, 338 flow [2022-12-13 10:32:26,412 INFO L130 PetriNetUnfolder]: 129/564 cut-off events. [2022-12-13 10:32:26,412 INFO L131 PetriNetUnfolder]: For 209/241 co-relation queries the response was YES. [2022-12-13 10:32:26,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 564 events. 129/564 cut-off events. For 209/241 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3415 event pairs, 17 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 682. Up to 68 conditions per place. [2022-12-13 10:32:26,420 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 81 transitions, 338 flow [2022-12-13 10:32:26,420 INFO L226 LiptonReduction]: Number of co-enabled transitions 2666 [2022-12-13 10:32:28,508 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 10:32:28,509 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2131 [2022-12-13 10:32:28,509 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 340 flow [2022-12-13 10:32:28,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:28,509 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:32:28,509 INFO L214 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] [2022-12-13 10:32:28,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 10:32:28,510 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 10:32:28,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:32:28,510 INFO L85 PathProgramCache]: Analyzing trace with hash 534493868, now seen corresponding path program 1 times [2022-12-13 10:32:28,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:32:28,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852802383] [2022-12-13 10:32:28,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:32:28,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:32:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:32:28,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:32:28,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:32:28,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852802383] [2022-12-13 10:32:28,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852802383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:32:28,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:32:28,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:32:28,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401712115] [2022-12-13 10:32:28,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:32:28,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:32:28,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:32:28,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:32:28,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:32:28,751 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 63 [2022-12-13 10:32:28,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:28,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:32:28,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 63 [2022-12-13 10:32:28,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:32:32,965 INFO L130 PetriNetUnfolder]: 50114/64690 cut-off events. [2022-12-13 10:32:32,965 INFO L131 PetriNetUnfolder]: For 56843/56843 co-relation queries the response was YES. [2022-12-13 10:32:33,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176421 conditions, 64690 events. 50114/64690 cut-off events. For 56843/56843 co-relation queries the response was YES. Maximal size of possible extension queue 1620. Compared 328443 event pairs, 34175 based on Foata normal form. 0/55123 useless extension candidates. Maximal degree in co-relation 161567. Up to 57644 conditions per place. [2022-12-13 10:32:33,314 INFO L137 encePairwiseOnDemand]: 59/63 looper letters, 63 selfloop transitions, 0 changer transitions 55/132 dead transitions. [2022-12-13 10:32:33,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 132 transitions, 721 flow [2022-12-13 10:32:33,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 10:32:33,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 10:32:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2022-12-13 10:32:33,315 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2022-12-13 10:32:33,316 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 340 flow. Second operand 4 states and 159 transitions. [2022-12-13 10:32:33,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 132 transitions, 721 flow [2022-12-13 10:32:33,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 132 transitions, 715 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-12-13 10:32:33,337 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 306 flow [2022-12-13 10:32:33,337 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2022-12-13 10:32:33,337 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 13 predicate places. [2022-12-13 10:32:33,338 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 10:32:33,338 INFO L89 Accepts]: Start accepts. Operand has 84 places, 77 transitions, 306 flow [2022-12-13 10:32:33,339 INFO L95 Accepts]: Finished accepts. [2022-12-13 10:32:33,339 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:32:33,339 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 306 flow [2022-12-13 10:32:33,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 77 transitions, 306 flow [2022-12-13 10:32:33,376 INFO L130 PetriNetUnfolder]: 139/497 cut-off events. [2022-12-13 10:32:33,377 INFO L131 PetriNetUnfolder]: For 200/236 co-relation queries the response was YES. [2022-12-13 10:32:33,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 497 events. 139/497 cut-off events. For 200/236 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2801 event pairs, 24 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 909. Up to 66 conditions per place. [2022-12-13 10:32:33,384 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 77 transitions, 306 flow [2022-12-13 10:32:33,384 INFO L226 LiptonReduction]: Number of co-enabled transitions 2566 [2022-12-13 10:32:33,391 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 10:32:33,392 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 54 [2022-12-13 10:32:33,392 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 306 flow [2022-12-13 10:32:33,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:33,392 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:32:33,392 INFO L214 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] [2022-12-13 10:32:33,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 10:32:33,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 10:32:33,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:32:33,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1182372794, now seen corresponding path program 1 times [2022-12-13 10:32:33,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:32:33,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616858523] [2022-12-13 10:32:33,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:32:33,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:32:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:32:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:32:33,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:32:33,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616858523] [2022-12-13 10:32:33,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616858523] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:32:33,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:32:33,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:32:33,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461231020] [2022-12-13 10:32:33,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:32:33,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:32:33,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:32:33,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:32:33,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:32:33,686 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-13 10:32:33,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:33,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:32:33,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-13 10:32:33,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:32:38,925 INFO L130 PetriNetUnfolder]: 60023/78026 cut-off events. [2022-12-13 10:32:38,925 INFO L131 PetriNetUnfolder]: For 74895/74903 co-relation queries the response was YES. [2022-12-13 10:32:39,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218569 conditions, 78026 events. 60023/78026 cut-off events. For 74895/74903 co-relation queries the response was YES. Maximal size of possible extension queue 1869. Compared 414356 event pairs, 36134 based on Foata normal form. 1238/74807 useless extension candidates. Maximal degree in co-relation 167307. Up to 57643 conditions per place. [2022-12-13 10:32:39,451 INFO L137 encePairwiseOnDemand]: 55/61 looper letters, 130 selfloop transitions, 5 changer transitions 0/149 dead transitions. [2022-12-13 10:32:39,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 149 transitions, 841 flow [2022-12-13 10:32:39,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:32:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 10:32:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2022-12-13 10:32:39,453 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5967213114754099 [2022-12-13 10:32:39,453 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 306 flow. Second operand 5 states and 182 transitions. [2022-12-13 10:32:39,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 149 transitions, 841 flow [2022-12-13 10:32:39,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 149 transitions, 809 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-12-13 10:32:39,814 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 338 flow [2022-12-13 10:32:39,814 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2022-12-13 10:32:39,814 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 9 predicate places. [2022-12-13 10:32:39,815 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 10:32:39,815 INFO L89 Accepts]: Start accepts. Operand has 80 places, 81 transitions, 338 flow [2022-12-13 10:32:39,816 INFO L95 Accepts]: Finished accepts. [2022-12-13 10:32:39,816 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:32:39,817 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 81 transitions, 338 flow [2022-12-13 10:32:39,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 81 transitions, 338 flow [2022-12-13 10:32:39,886 INFO L130 PetriNetUnfolder]: 169/677 cut-off events. [2022-12-13 10:32:39,887 INFO L131 PetriNetUnfolder]: For 218/256 co-relation queries the response was YES. [2022-12-13 10:32:39,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1225 conditions, 677 events. 169/677 cut-off events. For 218/256 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4266 event pairs, 27 based on Foata normal form. 0/568 useless extension candidates. Maximal degree in co-relation 881. Up to 86 conditions per place. [2022-12-13 10:32:39,902 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 81 transitions, 338 flow [2022-12-13 10:32:39,902 INFO L226 LiptonReduction]: Number of co-enabled transitions 2656 [2022-12-13 10:32:42,374 INFO L241 LiptonReduction]: Total number of compositions: 1 [2022-12-13 10:32:42,391 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2576 [2022-12-13 10:32:42,391 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 335 flow [2022-12-13 10:32:42,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:42,391 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:32:42,391 INFO L214 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] [2022-12-13 10:32:42,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 10:32:42,392 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 10:32:42,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:32:42,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1396568569, now seen corresponding path program 1 times [2022-12-13 10:32:42,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:32:42,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135696591] [2022-12-13 10:32:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:32:42,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:32:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:32:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:32:42,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:32:42,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135696591] [2022-12-13 10:32:42,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135696591] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:32:42,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:32:42,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:32:42,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908070252] [2022-12-13 10:32:42,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:32:42,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 10:32:42,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:32:42,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:32:42,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:32:42,585 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2022-12-13 10:32:42,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:42,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:32:42,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2022-12-13 10:32:42,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:32:46,586 INFO L130 PetriNetUnfolder]: 48014/62625 cut-off events. [2022-12-13 10:32:46,587 INFO L131 PetriNetUnfolder]: For 54678/54678 co-relation queries the response was YES. [2022-12-13 10:32:46,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176257 conditions, 62625 events. 48014/62625 cut-off events. For 54678/54678 co-relation queries the response was YES. Maximal size of possible extension queue 1591. Compared 329381 event pairs, 14641 based on Foata normal form. 3132/62095 useless extension candidates. Maximal degree in co-relation 160909. Up to 33398 conditions per place. [2022-12-13 10:32:46,935 INFO L137 encePairwiseOnDemand]: 56/62 looper letters, 104 selfloop transitions, 2 changer transitions 58/178 dead transitions. [2022-12-13 10:32:46,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 178 transitions, 1028 flow [2022-12-13 10:32:46,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:32:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 10:32:46,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 202 transitions. [2022-12-13 10:32:46,951 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6516129032258065 [2022-12-13 10:32:46,952 INFO L175 Difference]: Start difference. First operand has 79 places, 80 transitions, 335 flow. Second operand 5 states and 202 transitions. [2022-12-13 10:32:46,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 178 transitions, 1028 flow [2022-12-13 10:32:46,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 178 transitions, 1017 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-12-13 10:32:46,987 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 324 flow [2022-12-13 10:32:46,988 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2022-12-13 10:32:47,001 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 14 predicate places. [2022-12-13 10:32:47,001 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 10:32:47,001 INFO L89 Accepts]: Start accepts. Operand has 85 places, 79 transitions, 324 flow [2022-12-13 10:32:47,005 INFO L95 Accepts]: Finished accepts. [2022-12-13 10:32:47,006 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:32:47,006 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 79 transitions, 324 flow [2022-12-13 10:32:47,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 324 flow [2022-12-13 10:32:47,036 INFO L130 PetriNetUnfolder]: 142/509 cut-off events. [2022-12-13 10:32:47,037 INFO L131 PetriNetUnfolder]: For 245/313 co-relation queries the response was YES. [2022-12-13 10:32:47,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 509 events. 142/509 cut-off events. For 245/313 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2888 event pairs, 24 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 995. Up to 66 conditions per place. [2022-12-13 10:32:47,044 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 79 transitions, 324 flow [2022-12-13 10:32:47,044 INFO L226 LiptonReduction]: Number of co-enabled transitions 2702 [2022-12-13 10:32:47,045 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 10:32:47,046 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 45 [2022-12-13 10:32:47,046 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 324 flow [2022-12-13 10:32:47,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:47,046 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:32:47,046 INFO L214 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] [2022-12-13 10:32:47,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 10:32:47,046 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 10:32:47,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:32:47,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1152940937, now seen corresponding path program 1 times [2022-12-13 10:32:47,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:32:47,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287016994] [2022-12-13 10:32:47,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:32:47,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:32:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:32:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 10:32:47,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:32:47,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287016994] [2022-12-13 10:32:47,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287016994] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:32:47,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:32:47,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:32:47,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416806639] [2022-12-13 10:32:47,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:32:47,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:32:47,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:32:47,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:32:47,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:32:47,186 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-13 10:32:47,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:47,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:32:47,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-13 10:32:47,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:32:53,549 INFO L130 PetriNetUnfolder]: 65931/85483 cut-off events. [2022-12-13 10:32:53,549 INFO L131 PetriNetUnfolder]: For 127015/127015 co-relation queries the response was YES. [2022-12-13 10:32:53,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275556 conditions, 85483 events. 65931/85483 cut-off events. For 127015/127015 co-relation queries the response was YES. Maximal size of possible extension queue 2088. Compared 458932 event pairs, 31842 based on Foata normal form. 2520/83945 useless extension candidates. Maximal degree in co-relation 154484. Up to 38208 conditions per place. [2022-12-13 10:32:54,002 INFO L137 encePairwiseOnDemand]: 54/61 looper letters, 183 selfloop transitions, 10 changer transitions 0/207 dead transitions. [2022-12-13 10:32:54,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 207 transitions, 1282 flow [2022-12-13 10:32:54,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:32:54,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:32:54,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2022-12-13 10:32:54,004 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6366120218579235 [2022-12-13 10:32:54,004 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 324 flow. Second operand 6 states and 233 transitions. [2022-12-13 10:32:54,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 207 transitions, 1282 flow [2022-12-13 10:32:55,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 207 transitions, 1202 flow, removed 38 selfloop flow, removed 6 redundant places. [2022-12-13 10:32:55,681 INFO L231 Difference]: Finished difference. Result has 83 places, 86 transitions, 384 flow [2022-12-13 10:32:55,681 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=83, PETRI_TRANSITIONS=86} [2022-12-13 10:32:55,681 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 12 predicate places. [2022-12-13 10:32:55,681 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 10:32:55,682 INFO L89 Accepts]: Start accepts. Operand has 83 places, 86 transitions, 384 flow [2022-12-13 10:32:55,683 INFO L95 Accepts]: Finished accepts. [2022-12-13 10:32:55,683 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:32:55,683 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 86 transitions, 384 flow [2022-12-13 10:32:55,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 86 transitions, 384 flow [2022-12-13 10:32:55,815 INFO L130 PetriNetUnfolder]: 257/905 cut-off events. [2022-12-13 10:32:55,816 INFO L131 PetriNetUnfolder]: For 371/425 co-relation queries the response was YES. [2022-12-13 10:32:55,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1899 conditions, 905 events. 257/905 cut-off events. For 371/425 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6020 event pairs, 38 based on Foata normal form. 0/679 useless extension candidates. Maximal degree in co-relation 937. Up to 132 conditions per place. [2022-12-13 10:32:55,828 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 86 transitions, 384 flow [2022-12-13 10:32:55,829 INFO L226 LiptonReduction]: Number of co-enabled transitions 3028 [2022-12-13 10:32:55,832 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 10:32:55,833 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 152 [2022-12-13 10:32:55,833 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 86 transitions, 384 flow [2022-12-13 10:32:55,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:55,833 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:32:55,833 INFO L214 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] [2022-12-13 10:32:55,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 10:32:55,833 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 10:32:55,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:32:55,834 INFO L85 PathProgramCache]: Analyzing trace with hash -924601047, now seen corresponding path program 1 times [2022-12-13 10:32:55,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:32:55,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736382937] [2022-12-13 10:32:55,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:32:55,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:32:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:32:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:32:55,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:32:55,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736382937] [2022-12-13 10:32:55,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736382937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:32:55,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:32:55,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 10:32:55,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304206503] [2022-12-13 10:32:55,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:32:55,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 10:32:55,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:32:55,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 10:32:55,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 10:32:55,965 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 61 [2022-12-13 10:32:55,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 86 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:32:55,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:32:55,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 61 [2022-12-13 10:32:55,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 10:33:00,392 INFO L130 PetriNetUnfolder]: 50031/64187 cut-off events. [2022-12-13 10:33:00,392 INFO L131 PetriNetUnfolder]: For 74319/74359 co-relation queries the response was YES. [2022-12-13 10:33:00,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213124 conditions, 64187 events. 50031/64187 cut-off events. For 74319/74359 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 321665 event pairs, 27164 based on Foata normal form. 4/54937 useless extension candidates. Maximal degree in co-relation 106685. Up to 28920 conditions per place. [2022-12-13 10:33:00,733 INFO L137 encePairwiseOnDemand]: 54/61 looper letters, 191 selfloop transitions, 10 changer transitions 0/215 dead transitions. [2022-12-13 10:33:00,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 215 transitions, 1363 flow [2022-12-13 10:33:00,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 10:33:00,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 10:33:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2022-12-13 10:33:00,734 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6366120218579235 [2022-12-13 10:33:00,734 INFO L175 Difference]: Start difference. First operand has 83 places, 86 transitions, 384 flow. Second operand 6 states and 233 transitions. [2022-12-13 10:33:00,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 215 transitions, 1363 flow [2022-12-13 10:33:00,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 215 transitions, 1338 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-12-13 10:33:00,836 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 447 flow [2022-12-13 10:33:00,837 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=447, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2022-12-13 10:33:00,837 INFO L295 CegarLoopForPetriNet]: 71 programPoint places, 18 predicate places. [2022-12-13 10:33:00,837 WARN L178 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-13 10:33:00,837 INFO L89 Accepts]: Start accepts. Operand has 89 places, 92 transitions, 447 flow [2022-12-13 10:33:00,838 INFO L95 Accepts]: Finished accepts. [2022-12-13 10:33:00,838 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-13 10:33:00,838 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 89 places, 92 transitions, 447 flow [2022-12-13 10:33:00,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 92 transitions, 447 flow [2022-12-13 10:33:00,886 INFO L130 PetriNetUnfolder]: 275/792 cut-off events. [2022-12-13 10:33:00,886 INFO L131 PetriNetUnfolder]: For 565/748 co-relation queries the response was YES. [2022-12-13 10:33:00,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 792 events. 275/792 cut-off events. For 565/748 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4857 event pairs, 23 based on Foata normal form. 0/612 useless extension candidates. Maximal degree in co-relation 1235. Up to 141 conditions per place. [2022-12-13 10:33:00,896 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 89 places, 92 transitions, 447 flow [2022-12-13 10:33:00,896 INFO L226 LiptonReduction]: Number of co-enabled transitions 3338 [2022-12-13 10:33:00,910 INFO L241 LiptonReduction]: Total number of compositions: 0 [2022-12-13 10:33:00,911 INFO L158 eatedLiptonReduction]: Time needed for LBE in milliseconds: 74 [2022-12-13 10:33:00,911 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 447 flow [2022-12-13 10:33:00,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:33:00,911 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-13 10:33:00,911 INFO L214 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] [2022-12-13 10:33:00,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 10:33:00,911 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-13 10:33:00,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:33:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1186990338, now seen corresponding path program 1 times [2022-12-13 10:33:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:33:00,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439140356] [2022-12-13 10:33:00,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:33:00,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:33:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:33:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:33:01,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:33:01,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439140356] [2022-12-13 10:33:01,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439140356] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 10:33:01,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84513348] [2022-12-13 10:33:01,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:33:01,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 10:33:01,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-13 10:33:01,827 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 10:33:01,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 10:33:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:33:01,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-13 10:33:02,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:33:02,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 10:33:02,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 10:33:02,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 10:33:02,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 10:33:02,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 10:33:02,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 10:33:02,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 10:33:02,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:33:02,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 10:33:02,599 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_351 (Array Int Int))) (= (+ c_~t_4~0 c_~s_2~0) (+ c_~s_6~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t6~0.base| v_ArrVal_351) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_7~0)))))) is different from false [2022-12-13 10:33:02,754 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 10:33:02,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 187 [2022-12-13 10:33:02,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 161 [2022-12-13 10:33:02,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 133 [2022-12-13 10:33:02,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 62 [2022-12-13 10:33:03,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:33:03,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84513348] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 10:33:03,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 10:33:03,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 31 [2022-12-13 10:33:03,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030457757] [2022-12-13 10:33:03,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 10:33:03,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-12-13 10:33:03,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:33:03,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-12-13 10:33:03,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=853, Unknown=13, NotChecked=60, Total=1056 [2022-12-13 10:33:03,065 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 61 [2022-12-13 10:33:03,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 447 flow. Second operand has 33 states, 33 states have (on average 8.787878787878787) internal successors, (290), 33 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 10:33:03,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 10:33:03,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 61 [2022-12-13 10:33:03,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand