/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:50:06,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:50:06,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:50:06,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:50:06,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:50:06,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:50:06,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:50:06,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:50:06,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:50:06,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:50:06,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:50:06,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:50:06,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:50:06,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:50:06,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:50:06,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:50:06,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:50:06,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:50:06,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:50:06,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:50:06,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:50:06,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:50:06,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:50:06,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:50:06,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:50:06,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:50:06,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:50:06,221 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:50:06,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:50:06,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:50:06,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:50:06,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:50:06,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:50:06,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:50:06,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:50:06,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:50:06,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:50:06,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:50:06,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:50:06,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:50:06,228 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:50:06,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:50:06,266 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:50:06,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:50:06,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:50:06,268 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:50:06,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:50:06,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:50:06,269 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:50:06,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:50:06,269 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:50:06,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:50:06,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:50:06,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:50:06,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:50:06,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:50:06,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:50:06,270 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:50:06,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:50:06,271 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:50:06,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:50:06,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:50:06,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:50:06,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:50:06,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:50:06,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:50:06,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:50:06,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:50:06,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:50:06,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:50:06,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:50:06,273 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:50:06,273 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:50:06,273 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:50:06,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:50:06,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:50:06,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:50:06,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:50:06,665 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:50:06,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2022-09-16 11:50:06,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1226ea0/8da7cd204b1a47cb9d407d7ccda13b79/FLAG617c6a3ee [2022-09-16 11:50:07,145 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:50:07,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2022-09-16 11:50:07,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1226ea0/8da7cd204b1a47cb9d407d7ccda13b79/FLAG617c6a3ee [2022-09-16 11:50:07,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1226ea0/8da7cd204b1a47cb9d407d7ccda13b79 [2022-09-16 11:50:07,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:50:07,174 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:50:07,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:50:07,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:50:07,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:50:07,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:50:07" (1/1) ... [2022-09-16 11:50:07,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1ece65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:07, skipping insertion in model container [2022-09-16 11:50:07,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:50:07" (1/1) ... [2022-09-16 11:50:07,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:50:07,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:50:07,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-09-16 11:50:07,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:50:07,390 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:50:07,412 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-09-16 11:50:07,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:50:07,422 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:50:07,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:07 WrapperNode [2022-09-16 11:50:07,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:50:07,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:50:07,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:50:07,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:50:07,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:07" (1/1) ... [2022-09-16 11:50:07,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:07" (1/1) ... [2022-09-16 11:50:07,455 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-09-16 11:50:07,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:50:07,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:50:07,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:50:07,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:50:07,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:07" (1/1) ... [2022-09-16 11:50:07,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:07" (1/1) ... [2022-09-16 11:50:07,466 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:07" (1/1) ... [2022-09-16 11:50:07,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:07" (1/1) ... [2022-09-16 11:50:07,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:07" (1/1) ... [2022-09-16 11:50:07,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:07" (1/1) ... [2022-09-16 11:50:07,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:07" (1/1) ... [2022-09-16 11:50:07,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:50:07,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:50:07,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:50:07,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:50:07,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:07" (1/1) ... [2022-09-16 11:50:07,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:50:07,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:07,515 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) [2022-09-16 11:50:07,536 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 [2022-09-16 11:50:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:50:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:50:07,548 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:50:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:50:07,548 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:50:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:50:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:50:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:50:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:50:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:50:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:50:07,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:50:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:50:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:50:07,550 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:50:07,644 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:50:07,646 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:50:07,878 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:50:07,932 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:50:07,932 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 11:50:07,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:50:07 BoogieIcfgContainer [2022-09-16 11:50:07,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:50:07,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:50:07,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:50:07,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:50:07,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:50:07" (1/3) ... [2022-09-16 11:50:07,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f145576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:50:07, skipping insertion in model container [2022-09-16 11:50:07,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:07" (2/3) ... [2022-09-16 11:50:07,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f145576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:50:07, skipping insertion in model container [2022-09-16 11:50:07,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:50:07" (3/3) ... [2022-09-16 11:50:07,940 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2022-09-16 11:50:07,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:50:07,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 11:50:07,953 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:50:08,019 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:50:08,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 102 transitions, 220 flow [2022-09-16 11:50:08,098 INFO L130 PetriNetUnfolder]: 11/100 cut-off events. [2022-09-16 11:50:08,098 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:50:08,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 11/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 145 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 55. Up to 4 conditions per place. [2022-09-16 11:50:08,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 102 transitions, 220 flow [2022-09-16 11:50:08,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 81 transitions, 171 flow [2022-09-16 11:50:08,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:50:08,122 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@7353ca36, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:50:08,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-09-16 11:50:08,136 INFO L130 PetriNetUnfolder]: 2/38 cut-off events. [2022-09-16 11:50:08,136 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:50:08,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:08,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:08,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:50:08,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:08,141 INFO L85 PathProgramCache]: Analyzing trace with hash -754746104, now seen corresponding path program 1 times [2022-09-16 11:50:08,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:08,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909516041] [2022-09-16 11:50:08,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:08,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:08,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:08,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:08,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909516041] [2022-09-16 11:50:08,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909516041] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:08,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:08,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:50:08,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490484509] [2022-09-16 11:50:08,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:08,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:50:08,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:08,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:50:08,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:50:08,383 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-09-16 11:50:08,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2022-09-16 11:50:08,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:08,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-09-16 11:50:08,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:08,497 INFO L130 PetriNetUnfolder]: 129/304 cut-off events. [2022-09-16 11:50:08,498 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-09-16 11:50:08,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506 conditions, 304 events. 129/304 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1285 event pairs, 24 based on Foata normal form. 28/199 useless extension candidates. Maximal degree in co-relation 401. Up to 169 conditions per place. [2022-09-16 11:50:08,502 INFO L137 encePairwiseOnDemand]: 87/102 looper letters, 17 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2022-09-16 11:50:08,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 229 flow [2022-09-16 11:50:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:50:08,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:50:08,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 274 transitions. [2022-09-16 11:50:08,515 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8954248366013072 [2022-09-16 11:50:08,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 274 transitions. [2022-09-16 11:50:08,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 274 transitions. [2022-09-16 11:50:08,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:08,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 274 transitions. [2022-09-16 11:50:08,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2022-09-16 11:50:08,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2022-09-16 11:50:08,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2022-09-16 11:50:08,529 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 171 flow. Second operand 3 states and 274 transitions. [2022-09-16 11:50:08,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 229 flow [2022-09-16 11:50:08,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 221 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:08,537 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 209 flow [2022-09-16 11:50:08,538 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2022-09-16 11:50:08,541 INFO L287 CegarLoopForPetriNet]: 78 programPoint places, 0 predicate places. [2022-09-16 11:50:08,541 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 209 flow [2022-09-16 11:50:08,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2022-09-16 11:50:08,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:08,542 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:08,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:50:08,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:50:08,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:08,543 INFO L85 PathProgramCache]: Analyzing trace with hash 104939503, now seen corresponding path program 1 times [2022-09-16 11:50:08,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:08,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628082917] [2022-09-16 11:50:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:08,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:08,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:08,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628082917] [2022-09-16 11:50:08,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628082917] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:08,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:08,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:08,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034542043] [2022-09-16 11:50:08,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:08,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:50:08,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:08,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:50:08,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:50:08,635 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 102 [2022-09-16 11:50:08,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 209 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2022-09-16 11:50:08,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:08,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 102 [2022-09-16 11:50:08,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:08,731 INFO L130 PetriNetUnfolder]: 161/389 cut-off events. [2022-09-16 11:50:08,731 INFO L131 PetriNetUnfolder]: For 56/144 co-relation queries the response was YES. [2022-09-16 11:50:08,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 389 events. 161/389 cut-off events. For 56/144 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1822 event pairs, 30 based on Foata normal form. 5/243 useless extension candidates. Maximal degree in co-relation 577. Up to 173 conditions per place. [2022-09-16 11:50:08,738 INFO L137 encePairwiseOnDemand]: 96/102 looper letters, 29 selfloop transitions, 5 changer transitions 0/93 dead transitions. [2022-09-16 11:50:08,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 93 transitions, 314 flow [2022-09-16 11:50:08,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:50:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:50:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2022-09-16 11:50:08,741 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8496732026143791 [2022-09-16 11:50:08,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2022-09-16 11:50:08,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2022-09-16 11:50:08,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:08,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2022-09-16 11:50:08,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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) [2022-09-16 11:50:08,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2022-09-16 11:50:08,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2022-09-16 11:50:08,743 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 209 flow. Second operand 3 states and 260 transitions. [2022-09-16 11:50:08,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 93 transitions, 314 flow [2022-09-16 11:50:08,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 93 transitions, 307 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:50:08,747 INFO L231 Difference]: Finished difference. Result has 81 places, 85 transitions, 234 flow [2022-09-16 11:50:08,747 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=81, PETRI_TRANSITIONS=85} [2022-09-16 11:50:08,747 INFO L287 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2022-09-16 11:50:08,747 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 85 transitions, 234 flow [2022-09-16 11:50:08,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 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) [2022-09-16 11:50:08,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:08,748 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:08,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:50:08,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:50:08,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:08,749 INFO L85 PathProgramCache]: Analyzing trace with hash 104939537, now seen corresponding path program 1 times [2022-09-16 11:50:08,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:08,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297330752] [2022-09-16 11:50:08,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:08,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:08,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:08,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297330752] [2022-09-16 11:50:08,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297330752] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:08,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707038819] [2022-09-16 11:50:08,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:08,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:08,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:08,796 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) [2022-09-16 11:50:08,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:50:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:08,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:50:08,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:08,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:09,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:09,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707038819] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:09,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:09,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-09-16 11:50:09,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756056856] [2022-09-16 11:50:09,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:09,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:50:09,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:09,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:50:09,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:50:09,029 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-09-16 11:50:09,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 85 transitions, 234 flow. Second operand has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 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) [2022-09-16 11:50:09,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:09,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-09-16 11:50:09,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:09,132 INFO L130 PetriNetUnfolder]: 219/659 cut-off events. [2022-09-16 11:50:09,132 INFO L131 PetriNetUnfolder]: For 126/175 co-relation queries the response was YES. [2022-09-16 11:50:09,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1225 conditions, 659 events. 219/659 cut-off events. For 126/175 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3555 event pairs, 4 based on Foata normal form. 0/457 useless extension candidates. Maximal degree in co-relation 701. Up to 213 conditions per place. [2022-09-16 11:50:09,136 INFO L137 encePairwiseOnDemand]: 89/102 looper letters, 21 selfloop transitions, 19 changer transitions 0/105 dead transitions. [2022-09-16 11:50:09,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 391 flow [2022-09-16 11:50:09,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:50:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:50:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 530 transitions. [2022-09-16 11:50:09,138 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8660130718954249 [2022-09-16 11:50:09,138 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 530 transitions. [2022-09-16 11:50:09,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 530 transitions. [2022-09-16 11:50:09,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:09,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 530 transitions. [2022-09-16 11:50:09,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:09,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 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) [2022-09-16 11:50:09,141 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 102.0) internal successors, (714), 7 states have internal predecessors, (714), 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) [2022-09-16 11:50:09,141 INFO L175 Difference]: Start difference. First operand has 81 places, 85 transitions, 234 flow. Second operand 6 states and 530 transitions. [2022-09-16 11:50:09,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 391 flow [2022-09-16 11:50:09,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 105 transitions, 381 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:09,144 INFO L231 Difference]: Finished difference. Result has 84 places, 97 transitions, 358 flow [2022-09-16 11:50:09,144 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=358, PETRI_PLACES=84, PETRI_TRANSITIONS=97} [2022-09-16 11:50:09,145 INFO L287 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2022-09-16 11:50:09,145 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 97 transitions, 358 flow [2022-09-16 11:50:09,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 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) [2022-09-16 11:50:09,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:09,146 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:09,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:50:09,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:09,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:50:09,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:09,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1078330672, now seen corresponding path program 1 times [2022-09-16 11:50:09,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:09,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876872827] [2022-09-16 11:50:09,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:09,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:09,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:09,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876872827] [2022-09-16 11:50:09,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876872827] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:09,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526168123] [2022-09-16 11:50:09,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:09,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:09,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:09,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:50:09,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:50:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:09,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:50:09,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:09,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:09,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526168123] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:09,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:09,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-09-16 11:50:09,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827375985] [2022-09-16 11:50:09,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:09,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:50:09,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:09,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:50:09,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:50:09,529 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-09-16 11:50:09,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 358 flow. Second operand has 8 states, 8 states have (on average 81.5) internal successors, (652), 8 states have internal predecessors, (652), 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) [2022-09-16 11:50:09,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:09,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-09-16 11:50:09,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:09,877 INFO L130 PetriNetUnfolder]: 521/1835 cut-off events. [2022-09-16 11:50:09,877 INFO L131 PetriNetUnfolder]: For 2314/2663 co-relation queries the response was YES. [2022-09-16 11:50:09,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 1835 events. 521/1835 cut-off events. For 2314/2663 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14098 event pairs, 10 based on Foata normal form. 153/1661 useless extension candidates. Maximal degree in co-relation 2111. Up to 445 conditions per place. [2022-09-16 11:50:09,898 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 51 selfloop transitions, 41 changer transitions 0/157 dead transitions. [2022-09-16 11:50:09,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 157 transitions, 919 flow [2022-09-16 11:50:09,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:50:09,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:50:09,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 722 transitions. [2022-09-16 11:50:09,901 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8848039215686274 [2022-09-16 11:50:09,901 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 722 transitions. [2022-09-16 11:50:09,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 722 transitions. [2022-09-16 11:50:09,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:09,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 722 transitions. [2022-09-16 11:50:09,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 90.25) internal successors, (722), 8 states have internal predecessors, (722), 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) [2022-09-16 11:50:09,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:09,907 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 102.0) internal successors, (918), 9 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:09,908 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 358 flow. Second operand 8 states and 722 transitions. [2022-09-16 11:50:09,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 157 transitions, 919 flow [2022-09-16 11:50:09,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 157 transitions, 873 flow, removed 20 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:09,915 INFO L231 Difference]: Finished difference. Result has 95 places, 135 transitions, 863 flow [2022-09-16 11:50:09,915 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=863, PETRI_PLACES=95, PETRI_TRANSITIONS=135} [2022-09-16 11:50:09,916 INFO L287 CegarLoopForPetriNet]: 78 programPoint places, 17 predicate places. [2022-09-16 11:50:09,916 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 135 transitions, 863 flow [2022-09-16 11:50:09,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 81.5) internal successors, (652), 8 states have internal predecessors, (652), 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) [2022-09-16 11:50:09,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:09,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:09,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:50:10,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-09-16 11:50:10,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:50:10,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:10,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1781447959, now seen corresponding path program 1 times [2022-09-16 11:50:10,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:10,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768782315] [2022-09-16 11:50:10,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:10,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:10,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:10,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768782315] [2022-09-16 11:50:10,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768782315] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:10,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:10,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:10,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717928348] [2022-09-16 11:50:10,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:10,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:10,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:10,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:10,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:10,192 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-09-16 11:50:10,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 135 transitions, 863 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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) [2022-09-16 11:50:10,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:10,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-09-16 11:50:10,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:10,545 INFO L130 PetriNetUnfolder]: 751/2662 cut-off events. [2022-09-16 11:50:10,546 INFO L131 PetriNetUnfolder]: For 7322/7886 co-relation queries the response was YES. [2022-09-16 11:50:10,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6440 conditions, 2662 events. 751/2662 cut-off events. For 7322/7886 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 22741 event pairs, 18 based on Foata normal form. 109/2319 useless extension candidates. Maximal degree in co-relation 4821. Up to 525 conditions per place. [2022-09-16 11:50:10,577 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 79 selfloop transitions, 35 changer transitions 0/179 dead transitions. [2022-09-16 11:50:10,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 179 transitions, 1531 flow [2022-09-16 11:50:10,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2022-09-16 11:50:10,579 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8627450980392157 [2022-09-16 11:50:10,580 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 352 transitions. [2022-09-16 11:50:10,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 352 transitions. [2022-09-16 11:50:10,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:10,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 352 transitions. [2022-09-16 11:50:10,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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) [2022-09-16 11:50:10,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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) [2022-09-16 11:50:10,583 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 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) [2022-09-16 11:50:10,583 INFO L175 Difference]: Start difference. First operand has 95 places, 135 transitions, 863 flow. Second operand 4 states and 352 transitions. [2022-09-16 11:50:10,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 179 transitions, 1531 flow [2022-09-16 11:50:10,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 179 transitions, 1451 flow, removed 40 selfloop flow, removed 0 redundant places. [2022-09-16 11:50:10,600 INFO L231 Difference]: Finished difference. Result has 100 places, 161 transitions, 1303 flow [2022-09-16 11:50:10,601 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1303, PETRI_PLACES=100, PETRI_TRANSITIONS=161} [2022-09-16 11:50:10,603 INFO L287 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2022-09-16 11:50:10,603 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 161 transitions, 1303 flow [2022-09-16 11:50:10,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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) [2022-09-16 11:50:10,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:10,605 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:10,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:50:10,605 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:50:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:10,605 INFO L85 PathProgramCache]: Analyzing trace with hash 147883295, now seen corresponding path program 1 times [2022-09-16 11:50:10,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:10,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769224827] [2022-09-16 11:50:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:10,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:10,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:10,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769224827] [2022-09-16 11:50:10,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769224827] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:10,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:10,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:10,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784805618] [2022-09-16 11:50:10,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:10,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:50:10,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:10,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:50:10,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:50:10,668 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 102 [2022-09-16 11:50:10,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 161 transitions, 1303 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2022-09-16 11:50:10,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:10,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 102 [2022-09-16 11:50:10,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:11,250 INFO L130 PetriNetUnfolder]: 1586/4645 cut-off events. [2022-09-16 11:50:11,250 INFO L131 PetriNetUnfolder]: For 16640/16963 co-relation queries the response was YES. [2022-09-16 11:50:11,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12190 conditions, 4645 events. 1586/4645 cut-off events. For 16640/16963 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 44620 event pairs, 179 based on Foata normal form. 77/3803 useless extension candidates. Maximal degree in co-relation 11130. Up to 1115 conditions per place. [2022-09-16 11:50:11,308 INFO L137 encePairwiseOnDemand]: 96/102 looper letters, 141 selfloop transitions, 5 changer transitions 0/210 dead transitions. [2022-09-16 11:50:11,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 210 transitions, 2181 flow [2022-09-16 11:50:11,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:50:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:50:11,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2022-09-16 11:50:11,310 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8464052287581699 [2022-09-16 11:50:11,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2022-09-16 11:50:11,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2022-09-16 11:50:11,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:11,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2022-09-16 11:50:11,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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) [2022-09-16 11:50:11,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2022-09-16 11:50:11,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 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) [2022-09-16 11:50:11,312 INFO L175 Difference]: Start difference. First operand has 100 places, 161 transitions, 1303 flow. Second operand 3 states and 259 transitions. [2022-09-16 11:50:11,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 210 transitions, 2181 flow [2022-09-16 11:50:11,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 210 transitions, 2168 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-09-16 11:50:11,342 INFO L231 Difference]: Finished difference. Result has 103 places, 163 transitions, 1324 flow [2022-09-16 11:50:11,342 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1324, PETRI_PLACES=103, PETRI_TRANSITIONS=163} [2022-09-16 11:50:11,343 INFO L287 CegarLoopForPetriNet]: 78 programPoint places, 25 predicate places. [2022-09-16 11:50:11,343 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 163 transitions, 1324 flow [2022-09-16 11:50:11,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2022-09-16 11:50:11,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:11,344 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:11,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:50:11,344 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:50:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash -517162754, now seen corresponding path program 1 times [2022-09-16 11:50:11,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:11,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033681955] [2022-09-16 11:50:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:11,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:11,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:11,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033681955] [2022-09-16 11:50:11,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033681955] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:11,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890937889] [2022-09-16 11:50:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:11,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:11,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:11,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:50:11,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:50:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:11,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:50:11,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:11,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:11,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890937889] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:11,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:11,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-09-16 11:50:11,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159006266] [2022-09-16 11:50:11,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:11,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:50:11,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:11,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:50:11,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:50:11,605 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-09-16 11:50:11,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 163 transitions, 1324 flow. Second operand has 9 states, 9 states have (on average 81.77777777777777) internal successors, (736), 9 states have internal predecessors, (736), 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) [2022-09-16 11:50:11,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:11,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-09-16 11:50:11,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:13,374 INFO L130 PetriNetUnfolder]: 3294/12135 cut-off events. [2022-09-16 11:50:13,375 INFO L131 PetriNetUnfolder]: For 46745/48225 co-relation queries the response was YES. [2022-09-16 11:50:13,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31463 conditions, 12135 events. 3294/12135 cut-off events. For 46745/48225 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 123324 event pairs, 30 based on Foata normal form. 686/11212 useless extension candidates. Maximal degree in co-relation 26851. Up to 1948 conditions per place. [2022-09-16 11:50:13,586 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 156 selfloop transitions, 261 changer transitions 0/484 dead transitions. [2022-09-16 11:50:13,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 484 transitions, 5833 flow [2022-09-16 11:50:13,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:50:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:50:13,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 812 transitions. [2022-09-16 11:50:13,589 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8845315904139434 [2022-09-16 11:50:13,590 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 812 transitions. [2022-09-16 11:50:13,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 812 transitions. [2022-09-16 11:50:13,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:13,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 812 transitions. [2022-09-16 11:50:13,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 90.22222222222223) internal successors, (812), 9 states have internal predecessors, (812), 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) [2022-09-16 11:50:13,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 102.0) internal successors, (1020), 10 states have internal predecessors, (1020), 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) [2022-09-16 11:50:13,595 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 102.0) internal successors, (1020), 10 states have internal predecessors, (1020), 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) [2022-09-16 11:50:13,595 INFO L175 Difference]: Start difference. First operand has 103 places, 163 transitions, 1324 flow. Second operand 9 states and 812 transitions. [2022-09-16 11:50:13,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 484 transitions, 5833 flow [2022-09-16 11:50:13,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 484 transitions, 5823 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:50:13,703 INFO L231 Difference]: Finished difference. Result has 115 places, 411 transitions, 5653 flow [2022-09-16 11:50:13,703 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5653, PETRI_PLACES=115, PETRI_TRANSITIONS=411} [2022-09-16 11:50:13,704 INFO L287 CegarLoopForPetriNet]: 78 programPoint places, 37 predicate places. [2022-09-16 11:50:13,704 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 411 transitions, 5653 flow [2022-09-16 11:50:13,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.77777777777777) internal successors, (736), 9 states have internal predecessors, (736), 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) [2022-09-16 11:50:13,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:13,705 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:13,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:50:13,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:13,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:50:13,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:13,932 INFO L85 PathProgramCache]: Analyzing trace with hash -762236355, now seen corresponding path program 1 times [2022-09-16 11:50:13,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:13,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264770479] [2022-09-16 11:50:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:13,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:13,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:13,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264770479] [2022-09-16 11:50:13,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264770479] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:13,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424745264] [2022-09-16 11:50:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:13,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:13,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:14,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:50:14,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:50:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:14,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:50:14,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:14,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:14,221 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:14,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424745264] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:14,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:14,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-09-16 11:50:14,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818595116] [2022-09-16 11:50:14,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:14,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 11:50:14,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:14,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 11:50:14,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:50:14,224 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-09-16 11:50:14,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 411 transitions, 5653 flow. Second operand has 10 states, 10 states have (on average 81.9) internal successors, (819), 10 states have internal predecessors, (819), 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) [2022-09-16 11:50:14,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:14,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-09-16 11:50:14,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:18,593 INFO L130 PetriNetUnfolder]: 6960/26462 cut-off events. [2022-09-16 11:50:18,593 INFO L131 PetriNetUnfolder]: For 228101/230925 co-relation queries the response was YES. [2022-09-16 11:50:18,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73570 conditions, 26462 events. 6960/26462 cut-off events. For 228101/230925 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 320008 event pairs, 64 based on Foata normal form. 3104/25718 useless extension candidates. Maximal degree in co-relation 58738. Up to 4585 conditions per place. [2022-09-16 11:50:19,169 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 313 selfloop transitions, 469 changer transitions 0/849 dead transitions. [2022-09-16 11:50:19,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 849 transitions, 13445 flow [2022-09-16 11:50:19,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:50:19,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:50:19,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 905 transitions. [2022-09-16 11:50:19,172 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8872549019607843 [2022-09-16 11:50:19,172 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 905 transitions. [2022-09-16 11:50:19,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 905 transitions. [2022-09-16 11:50:19,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:19,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 905 transitions. [2022-09-16 11:50:19,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 90.5) internal successors, (905), 10 states have internal predecessors, (905), 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) [2022-09-16 11:50:19,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 102.0) internal successors, (1122), 11 states have internal predecessors, (1122), 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) [2022-09-16 11:50:19,177 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 102.0) internal successors, (1122), 11 states have internal predecessors, (1122), 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) [2022-09-16 11:50:19,177 INFO L175 Difference]: Start difference. First operand has 115 places, 411 transitions, 5653 flow. Second operand 10 states and 905 transitions. [2022-09-16 11:50:19,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 849 transitions, 13445 flow [2022-09-16 11:50:19,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 849 transitions, 12824 flow, removed 308 selfloop flow, removed 1 redundant places. [2022-09-16 11:50:19,387 INFO L231 Difference]: Finished difference. Result has 131 places, 796 transitions, 13603 flow [2022-09-16 11:50:19,388 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=5448, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13603, PETRI_PLACES=131, PETRI_TRANSITIONS=796} [2022-09-16 11:50:19,391 INFO L287 CegarLoopForPetriNet]: 78 programPoint places, 53 predicate places. [2022-09-16 11:50:19,391 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 796 transitions, 13603 flow [2022-09-16 11:50:19,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.9) internal successors, (819), 10 states have internal predecessors, (819), 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) [2022-09-16 11:50:19,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:19,392 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:19,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:50:19,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:19,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:50:19,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:19,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1006235699, now seen corresponding path program 1 times [2022-09-16 11:50:19,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:19,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151746833] [2022-09-16 11:50:19,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:19,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:19,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:19,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151746833] [2022-09-16 11:50:19,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151746833] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:19,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718520385] [2022-09-16 11:50:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:19,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:19,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:19,704 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:50:19,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:50:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:19,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:50:19,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:19,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:19,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:19,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718520385] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:19,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:19,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-09-16 11:50:19,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777616918] [2022-09-16 11:50:19,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:19,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-16 11:50:19,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:19,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-16 11:50:19,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=93, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:50:19,962 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-09-16 11:50:19,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 796 transitions, 13603 flow. Second operand has 14 states, 14 states have (on average 81.5) internal successors, (1141), 14 states have internal predecessors, (1141), 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) [2022-09-16 11:50:19,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:19,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-09-16 11:50:19,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:32,818 INFO L130 PetriNetUnfolder]: 18625/71148 cut-off events. [2022-09-16 11:50:32,819 INFO L131 PetriNetUnfolder]: For 718280/724849 co-relation queries the response was YES. [2022-09-16 11:50:33,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215182 conditions, 71148 events. 18625/71148 cut-off events. For 718280/724849 co-relation queries the response was YES. Maximal size of possible extension queue 1511. Compared 1005464 event pairs, 77 based on Foata normal form. 5513/66344 useless extension candidates. Maximal degree in co-relation 182876. Up to 12160 conditions per place. [2022-09-16 11:50:34,538 INFO L137 encePairwiseOnDemand]: 91/102 looper letters, 642 selfloop transitions, 1578 changer transitions 0/2287 dead transitions. [2022-09-16 11:50:34,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 2287 transitions, 43265 flow [2022-09-16 11:50:34,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-16 11:50:34,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-16 11:50:34,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1254 transitions. [2022-09-16 11:50:34,541 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8781512605042017 [2022-09-16 11:50:34,541 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1254 transitions. [2022-09-16 11:50:34,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1254 transitions. [2022-09-16 11:50:34,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:34,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1254 transitions. [2022-09-16 11:50:34,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 89.57142857142857) internal successors, (1254), 14 states have internal predecessors, (1254), 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) [2022-09-16 11:50:34,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 102.0) internal successors, (1530), 15 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:34,546 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 102.0) internal successors, (1530), 15 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:34,546 INFO L175 Difference]: Start difference. First operand has 131 places, 796 transitions, 13603 flow. Second operand 14 states and 1254 transitions. [2022-09-16 11:50:34,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 2287 transitions, 43265 flow [2022-09-16 11:50:35,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 2287 transitions, 39343 flow, removed 1961 selfloop flow, removed 0 redundant places. [2022-09-16 11:50:35,759 INFO L231 Difference]: Finished difference. Result has 151 places, 1989 transitions, 37639 flow [2022-09-16 11:50:35,760 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=11431, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=498, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=37639, PETRI_PLACES=151, PETRI_TRANSITIONS=1989} [2022-09-16 11:50:35,760 INFO L287 CegarLoopForPetriNet]: 78 programPoint places, 73 predicate places. [2022-09-16 11:50:35,760 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 1989 transitions, 37639 flow [2022-09-16 11:50:35,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 81.5) internal successors, (1141), 14 states have internal predecessors, (1141), 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) [2022-09-16 11:50:35,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:35,761 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:35,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:50:35,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:35,979 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:50:35,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:35,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1995139882, now seen corresponding path program 1 times [2022-09-16 11:50:35,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:35,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254722863] [2022-09-16 11:50:35,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:35,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:36,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:36,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254722863] [2022-09-16 11:50:36,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254722863] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:36,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611693508] [2022-09-16 11:50:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:36,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:36,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:36,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:50:36,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:50:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:36,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:50:36,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:36,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:36,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611693508] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:36,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:36,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-09-16 11:50:36,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017846974] [2022-09-16 11:50:36,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:36,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:50:36,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:36,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:50:36,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=122, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:50:36,248 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 102 [2022-09-16 11:50:36,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 1989 transitions, 37639 flow. Second operand has 16 states, 16 states have (on average 81.4375) internal successors, (1303), 16 states have internal predecessors, (1303), 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) [2022-09-16 11:50:36,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:36,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 102 [2022-09-16 11:50:36,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand