/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/popl20-simple-queue.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 12:01:02,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 12:01:02,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 12:01:02,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 12:01:02,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 12:01:02,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 12:01:02,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 12:01:02,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 12:01:02,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 12:01:02,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 12:01:02,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 12:01:02,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 12:01:02,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 12:01:02,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 12:01:02,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 12:01:02,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 12:01:02,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 12:01:02,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 12:01:02,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 12:01:02,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 12:01:02,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 12:01:02,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 12:01:02,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 12:01:02,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 12:01:02,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 12:01:02,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 12:01:02,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 12:01:02,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 12:01:02,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 12:01:02,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 12:01:02,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 12:01:02,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 12:01:02,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 12:01:02,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 12:01:02,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 12:01:02,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 12:01:02,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 12:01:02,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 12:01:02,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 12:01:02,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 12:01:02,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 12:01:02,175 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 12:01:02,210 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 12:01:02,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 12:01:02,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 12:01:02,211 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 12:01:02,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 12:01:02,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 12:01:02,212 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 12:01:02,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 12:01:02,212 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 12:01:02,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 12:01:02,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 12:01:02,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 12:01:02,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 12:01:02,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 12:01:02,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 12:01:02,214 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 12:01:02,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 12:01:02,214 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 12:01:02,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 12:01:02,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 12:01:02,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 12:01:02,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 12:01:02,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 12:01:02,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:01:02,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 12:01:02,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 12:01:02,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 12:01:02,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 12:01:02,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 12:01:02,217 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 12:01:02,217 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 12:01:02,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 12:01:02,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 12:01:02,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 12:01:02,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 12:01:02,466 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 12:01:02,466 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 12:01:02,468 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2022-09-16 12:01:02,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed24c036e/e25a3be930dd4e3a9534392d2943c460/FLAG07bd579c6 [2022-09-16 12:01:02,962 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 12:01:02,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-queue.wvr.c [2022-09-16 12:01:02,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed24c036e/e25a3be930dd4e3a9534392d2943c460/FLAG07bd579c6 [2022-09-16 12:01:02,986 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed24c036e/e25a3be930dd4e3a9534392d2943c460 [2022-09-16 12:01:02,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 12:01:02,992 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 12:01:03,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 12:01:03,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 12:01:03,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 12:01:03,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:01:02" (1/1) ... [2022-09-16 12:01:03,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e932f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:03, skipping insertion in model container [2022-09-16 12:01:03,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:01:02" (1/1) ... [2022-09-16 12:01:03,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 12:01:03,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 12:01:03,222 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/popl20-simple-queue.wvr.c[2438,2451] [2022-09-16 12:01:03,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:01:03,232 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 12:01:03,247 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/popl20-simple-queue.wvr.c[2438,2451] [2022-09-16 12:01:03,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:01:03,261 INFO L208 MainTranslator]: Completed translation [2022-09-16 12:01:03,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:03 WrapperNode [2022-09-16 12:01:03,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 12:01:03,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 12:01:03,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 12:01:03,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 12:01:03,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:03" (1/1) ... [2022-09-16 12:01:03,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:03" (1/1) ... [2022-09-16 12:01:03,293 INFO L138 Inliner]: procedures = 24, calls = 33, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 134 [2022-09-16 12:01:03,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 12:01:03,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 12:01:03,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 12:01:03,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 12:01:03,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:03" (1/1) ... [2022-09-16 12:01:03,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:03" (1/1) ... [2022-09-16 12:01:03,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:03" (1/1) ... [2022-09-16 12:01:03,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:03" (1/1) ... [2022-09-16 12:01:03,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:03" (1/1) ... [2022-09-16 12:01:03,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:03" (1/1) ... [2022-09-16 12:01:03,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:03" (1/1) ... [2022-09-16 12:01:03,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 12:01:03,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 12:01:03,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 12:01:03,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 12:01:03,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:03" (1/1) ... [2022-09-16 12:01:03,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:01:03,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:03,354 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 12:01:03,359 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 12:01:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 12:01:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 12:01:03,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 12:01:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 12:01:03,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 12:01:03,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 12:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 12:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 12:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 12:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 12:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 12:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 12:01:03,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 12:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 12:01:03,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 12:01:03,386 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 12:01:03,450 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 12:01:03,451 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 12:01:03,723 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 12:01:03,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 12:01:03,817 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 12:01:03,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:01:03 BoogieIcfgContainer [2022-09-16 12:01:03,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 12:01:03,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 12:01:03,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 12:01:03,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 12:01:03,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:01:02" (1/3) ... [2022-09-16 12:01:03,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765fec33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:01:03, skipping insertion in model container [2022-09-16 12:01:03,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:03" (2/3) ... [2022-09-16 12:01:03,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765fec33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:01:03, skipping insertion in model container [2022-09-16 12:01:03,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:01:03" (3/3) ... [2022-09-16 12:01:03,835 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2022-09-16 12:01:03,849 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 12:01:03,850 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-09-16 12:01:03,850 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 12:01:03,923 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 12:01:03,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 127 transitions, 270 flow [2022-09-16 12:01:04,047 INFO L130 PetriNetUnfolder]: 9/125 cut-off events. [2022-09-16 12:01:04,048 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 12:01:04,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 125 events. 9/125 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-09-16 12:01:04,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 127 transitions, 270 flow [2022-09-16 12:01:04,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 106 transitions, 221 flow [2022-09-16 12:01:04,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:01:04,085 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;@aed2788, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:01:04,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-09-16 12:01:04,110 INFO L130 PetriNetUnfolder]: 3/64 cut-off events. [2022-09-16 12:01:04,111 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:01:04,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:04,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:04,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-09-16 12:01:04,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:04,118 INFO L85 PathProgramCache]: Analyzing trace with hash 650990987, now seen corresponding path program 1 times [2022-09-16 12:01:04,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:04,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120193690] [2022-09-16 12:01:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:04,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:04,389 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 12:01:04,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:04,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120193690] [2022-09-16 12:01:04,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120193690] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:04,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:01:04,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:01:04,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801693598] [2022-09-16 12:01:04,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:04,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:01:04,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:01:04,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:01:04,440 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-09-16 12:01:04,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 106 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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 12:01:04,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:04,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-09-16 12:01:04,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:04,614 INFO L130 PetriNetUnfolder]: 19/166 cut-off events. [2022-09-16 12:01:04,614 INFO L131 PetriNetUnfolder]: For 20/22 co-relation queries the response was YES. [2022-09-16 12:01:04,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 166 events. 19/166 cut-off events. For 20/22 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 327 event pairs, 6 based on Foata normal form. 14/154 useless extension candidates. Maximal degree in co-relation 146. Up to 30 conditions per place. [2022-09-16 12:01:04,619 INFO L137 encePairwiseOnDemand]: 114/127 looper letters, 30 selfloop transitions, 4 changer transitions 2/114 dead transitions. [2022-09-16 12:01:04,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 314 flow [2022-09-16 12:01:04,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:01:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:01:04,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2022-09-16 12:01:04,640 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8472440944881889 [2022-09-16 12:01:04,641 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2022-09-16 12:01:04,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2022-09-16 12:01:04,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:04,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2022-09-16 12:01:04,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 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 12:01:04,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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 12:01:04,661 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 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 12:01:04,663 INFO L175 Difference]: Start difference. First operand has 105 places, 106 transitions, 221 flow. Second operand 5 states and 538 transitions. [2022-09-16 12:01:04,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 314 flow [2022-09-16 12:01:04,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 114 transitions, 304 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 12:01:04,672 INFO L231 Difference]: Finished difference. Result has 107 places, 100 transitions, 228 flow [2022-09-16 12:01:04,674 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=107, PETRI_TRANSITIONS=100} [2022-09-16 12:01:04,677 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 2 predicate places. [2022-09-16 12:01:04,678 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 100 transitions, 228 flow [2022-09-16 12:01:04,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.5) internal successors, (398), 4 states have internal predecessors, (398), 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 12:01:04,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:04,678 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, 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 12:01:04,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 12:01:04,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-09-16 12:01:04,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:04,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1788017742, now seen corresponding path program 1 times [2022-09-16 12:01:04,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:04,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571840156] [2022-09-16 12:01:04,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:04,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:04,847 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 12:01:04,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:04,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571840156] [2022-09-16 12:01:04,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571840156] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:04,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:01:04,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 12:01:04,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597186213] [2022-09-16 12:01:04,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:04,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:01:04,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:04,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:01:04,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 12:01:04,854 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 127 [2022-09-16 12:01:04,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 100 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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 12:01:04,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:04,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 127 [2022-09-16 12:01:04,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:04,983 INFO L130 PetriNetUnfolder]: 10/150 cut-off events. [2022-09-16 12:01:04,983 INFO L131 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2022-09-16 12:01:04,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 150 events. 10/150 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 241 event pairs, 3 based on Foata normal form. 4/140 useless extension candidates. Maximal degree in co-relation 91. Up to 27 conditions per place. [2022-09-16 12:01:04,992 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 19 selfloop transitions, 6 changer transitions 4/106 dead transitions. [2022-09-16 12:01:04,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 106 transitions, 302 flow [2022-09-16 12:01:04,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:01:04,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:01:04,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 705 transitions. [2022-09-16 12:01:04,996 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7930258717660292 [2022-09-16 12:01:04,996 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 705 transitions. [2022-09-16 12:01:04,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 705 transitions. [2022-09-16 12:01:04,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:04,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 705 transitions. [2022-09-16 12:01:04,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.71428571428571) internal successors, (705), 7 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:05,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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 12:01:05,002 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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 12:01:05,003 INFO L175 Difference]: Start difference. First operand has 107 places, 100 transitions, 228 flow. Second operand 7 states and 705 transitions. [2022-09-16 12:01:05,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 106 transitions, 302 flow [2022-09-16 12:01:05,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 106 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:01:05,007 INFO L231 Difference]: Finished difference. Result has 112 places, 100 transitions, 250 flow [2022-09-16 12:01:05,008 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=250, PETRI_PLACES=112, PETRI_TRANSITIONS=100} [2022-09-16 12:01:05,008 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 7 predicate places. [2022-09-16 12:01:05,009 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 100 transitions, 250 flow [2022-09-16 12:01:05,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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 12:01:05,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:05,010 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:05,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 12:01:05,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-09-16 12:01:05,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:05,011 INFO L85 PathProgramCache]: Analyzing trace with hash -124324023, now seen corresponding path program 1 times [2022-09-16 12:01:05,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:05,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655978094] [2022-09-16 12:01:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:05,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:05,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:05,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655978094] [2022-09-16 12:01:05,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655978094] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:05,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090792636] [2022-09-16 12:01:05,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:05,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:05,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:05,116 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 12:01:05,117 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 12:01:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:05,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:01:05,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:05,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:05,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090792636] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:05,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:05,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 12:01:05,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577515279] [2022-09-16 12:01:05,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:05,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 12:01:05,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:05,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 12:01:05,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 12:01:05,376 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-09-16 12:01:05,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 100.66666666666667) internal successors, (1208), 12 states have internal predecessors, (1208), 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 12:01:05,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:05,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-09-16 12:01:05,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:05,611 INFO L130 PetriNetUnfolder]: 37/289 cut-off events. [2022-09-16 12:01:05,611 INFO L131 PetriNetUnfolder]: For 40/44 co-relation queries the response was YES. [2022-09-16 12:01:05,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 289 events. 37/289 cut-off events. For 40/44 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 827 event pairs, 12 based on Foata normal form. 3/252 useless extension candidates. Maximal degree in co-relation 427. Up to 49 conditions per place. [2022-09-16 12:01:05,617 INFO L137 encePairwiseOnDemand]: 120/127 looper letters, 55 selfloop transitions, 18 changer transitions 0/151 dead transitions. [2022-09-16 12:01:05,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 151 transitions, 562 flow [2022-09-16 12:01:05,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 12:01:05,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 12:01:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1840 transitions. [2022-09-16 12:01:05,622 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8048993875765529 [2022-09-16 12:01:05,622 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1840 transitions. [2022-09-16 12:01:05,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1840 transitions. [2022-09-16 12:01:05,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:05,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1840 transitions. [2022-09-16 12:01:05,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 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 12:01:05,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 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 12:01:05,635 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 127.0) internal successors, (2413), 19 states have internal predecessors, (2413), 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 12:01:05,635 INFO L175 Difference]: Start difference. First operand has 112 places, 100 transitions, 250 flow. Second operand 18 states and 1840 transitions. [2022-09-16 12:01:05,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 151 transitions, 562 flow [2022-09-16 12:01:05,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 151 transitions, 550 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 12:01:05,643 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 344 flow [2022-09-16 12:01:05,643 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=344, PETRI_PLACES=127, PETRI_TRANSITIONS=112} [2022-09-16 12:01:05,645 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 22 predicate places. [2022-09-16 12:01:05,645 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 344 flow [2022-09-16 12:01:05,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 100.66666666666667) internal successors, (1208), 12 states have internal predecessors, (1208), 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 12:01:05,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:05,646 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:05,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 12:01:05,859 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 12:01:05,860 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-09-16 12:01:05,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:05,860 INFO L85 PathProgramCache]: Analyzing trace with hash 440922962, now seen corresponding path program 1 times [2022-09-16 12:01:05,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:05,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269171469] [2022-09-16 12:01:05,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:05,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:05,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:05,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269171469] [2022-09-16 12:01:05,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269171469] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:05,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181934390] [2022-09-16 12:01:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:05,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:05,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:05,925 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 12:01:05,927 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 12:01:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:05,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:01:05,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:06,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:01:06,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181934390] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:06,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:01:06,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:01:06,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271081570] [2022-09-16 12:01:06,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:06,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:01:06,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:06,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:01:06,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:01:06,040 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2022-09-16 12:01:06,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 112 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 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 12:01:06,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:06,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2022-09-16 12:01:06,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:06,128 INFO L130 PetriNetUnfolder]: 37/285 cut-off events. [2022-09-16 12:01:06,128 INFO L131 PetriNetUnfolder]: For 74/78 co-relation queries the response was YES. [2022-09-16 12:01:06,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 285 events. 37/285 cut-off events. For 74/78 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 806 event pairs, 12 based on Foata normal form. 4/249 useless extension candidates. Maximal degree in co-relation 385. Up to 84 conditions per place. [2022-09-16 12:01:06,130 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 23 selfloop transitions, 11 changer transitions 0/112 dead transitions. [2022-09-16 12:01:06,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 112 transitions, 395 flow [2022-09-16 12:01:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:01:06,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:01:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 712 transitions. [2022-09-16 12:01:06,133 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8008998875140607 [2022-09-16 12:01:06,133 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 712 transitions. [2022-09-16 12:01:06,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 712 transitions. [2022-09-16 12:01:06,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:06,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 712 transitions. [2022-09-16 12:01:06,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 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 12:01:06,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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 12:01:06,137 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 127.0) internal successors, (1016), 8 states have internal predecessors, (1016), 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 12:01:06,137 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 344 flow. Second operand 7 states and 712 transitions. [2022-09-16 12:01:06,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 112 transitions, 395 flow [2022-09-16 12:01:06,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 112 transitions, 363 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 12:01:06,142 INFO L231 Difference]: Finished difference. Result has 123 places, 108 transitions, 307 flow [2022-09-16 12:01:06,142 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=123, PETRI_TRANSITIONS=108} [2022-09-16 12:01:06,143 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 18 predicate places. [2022-09-16 12:01:06,143 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 108 transitions, 307 flow [2022-09-16 12:01:06,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 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 12:01:06,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:06,144 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, 1, 1, 1, 1, 1, 1, 1, 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 12:01:06,172 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 12:01:06,355 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 12:01:06,356 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-09-16 12:01:06,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:06,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1780772812, now seen corresponding path program 1 times [2022-09-16 12:01:06,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:06,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581200402] [2022-09-16 12:01:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:06,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:06,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581200402] [2022-09-16 12:01:06,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581200402] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:06,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576900517] [2022-09-16 12:01:06,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:06,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:06,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:06,464 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 12:01:06,492 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 12:01:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:06,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:01:06,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:06,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:06,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:01:06,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576900517] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:06,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:01:06,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-09-16 12:01:06,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433782952] [2022-09-16 12:01:06,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:06,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:01:06,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:06,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:01:06,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-16 12:01:06,640 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 127 [2022-09-16 12:01:06,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 108 transitions, 307 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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 12:01:06,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:06,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 127 [2022-09-16 12:01:06,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:06,688 INFO L130 PetriNetUnfolder]: 17/245 cut-off events. [2022-09-16 12:01:06,688 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-09-16 12:01:06,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 245 events. 17/245 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 549 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 305. Up to 32 conditions per place. [2022-09-16 12:01:06,689 INFO L137 encePairwiseOnDemand]: 122/127 looper letters, 3 selfloop transitions, 3 changer transitions 36/106 dead transitions. [2022-09-16 12:01:06,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 106 transitions, 321 flow [2022-09-16 12:01:06,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 12:01:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 12:01:06,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 429 transitions. [2022-09-16 12:01:06,691 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.844488188976378 [2022-09-16 12:01:06,691 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 429 transitions. [2022-09-16 12:01:06,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 429 transitions. [2022-09-16 12:01:06,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:06,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 429 transitions. [2022-09-16 12:01:06,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 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 12:01:06,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 12:01:06,694 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 12:01:06,694 INFO L175 Difference]: Start difference. First operand has 123 places, 108 transitions, 307 flow. Second operand 4 states and 429 transitions. [2022-09-16 12:01:06,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 106 transitions, 321 flow [2022-09-16 12:01:06,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 106 transitions, 307 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 12:01:06,698 INFO L231 Difference]: Finished difference. Result has 119 places, 70 transitions, 209 flow [2022-09-16 12:01:06,698 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=119, PETRI_TRANSITIONS=70} [2022-09-16 12:01:06,699 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 14 predicate places. [2022-09-16 12:01:06,699 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 70 transitions, 209 flow [2022-09-16 12:01:06,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 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 12:01:06,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:06,699 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:06,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 12:01:06,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:06,922 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-09-16 12:01:06,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:06,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1047105803, now seen corresponding path program 2 times [2022-09-16 12:01:06,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:06,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632061585] [2022-09-16 12:01:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:06,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:07,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:07,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632061585] [2022-09-16 12:01:07,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632061585] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:07,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957170722] [2022-09-16 12:01:07,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:01:07,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:07,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:07,058 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 12:01:07,059 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 12:01:07,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:01:07,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:01:07,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 12:01:07,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:07,267 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 12:01:07,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 12:01:07,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957170722] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:07,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:07,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 12:01:07,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179207777] [2022-09-16 12:01:07,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:07,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 12:01:07,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:07,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 12:01:07,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 12:01:07,391 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 127 [2022-09-16 12:01:07,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 70 transitions, 209 flow. Second operand has 18 states, 18 states have (on average 91.61111111111111) internal successors, (1649), 18 states have internal predecessors, (1649), 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 12:01:07,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:07,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 127 [2022-09-16 12:01:07,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:07,762 INFO L130 PetriNetUnfolder]: 1/103 cut-off events. [2022-09-16 12:01:07,763 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-09-16 12:01:07,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 103 events. 1/103 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 2/105 useless extension candidates. Maximal degree in co-relation 200. Up to 7 conditions per place. [2022-09-16 12:01:07,763 INFO L137 encePairwiseOnDemand]: 116/127 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2022-09-16 12:01:07,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 93 transitions, 379 flow [2022-09-16 12:01:07,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 12:01:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 12:01:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2169 transitions. [2022-09-16 12:01:07,768 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7116141732283464 [2022-09-16 12:01:07,768 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2169 transitions. [2022-09-16 12:01:07,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2169 transitions. [2022-09-16 12:01:07,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:07,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2169 transitions. [2022-09-16 12:01:07,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 90.375) internal successors, (2169), 24 states have internal predecessors, (2169), 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 12:01:07,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 127.0) internal successors, (3175), 25 states have internal predecessors, (3175), 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 12:01:07,781 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 127.0) internal successors, (3175), 25 states have internal predecessors, (3175), 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 12:01:07,781 INFO L175 Difference]: Start difference. First operand has 119 places, 70 transitions, 209 flow. Second operand 24 states and 2169 transitions. [2022-09-16 12:01:07,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 93 transitions, 379 flow [2022-09-16 12:01:07,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 363 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-16 12:01:07,783 INFO L231 Difference]: Finished difference. Result has 96 places, 0 transitions, 0 flow [2022-09-16 12:01:07,783 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=96, PETRI_TRANSITIONS=0} [2022-09-16 12:01:07,784 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, -9 predicate places. [2022-09-16 12:01:07,784 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 0 transitions, 0 flow [2022-09-16 12:01:07,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 91.61111111111111) internal successors, (1649), 18 states have internal predecessors, (1649), 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 12:01:07,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-09-16 12:01:07,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-09-16 12:01:07,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-09-16 12:01:07,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-09-16 12:01:07,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-09-16 12:01:07,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-09-16 12:01:07,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2022-09-16 12:01:07,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2022-09-16 12:01:07,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-09-16 12:01:07,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-09-16 12:01:07,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-09-16 12:01:07,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-09-16 12:01:07,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-16 12:01:08,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:08,004 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-09-16 12:01:08,008 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 12:01:08,008 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 12:01:08,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 12:01:08 BasicIcfg [2022-09-16 12:01:08,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 12:01:08,020 INFO L158 Benchmark]: Toolchain (without parser) took 5028.55ms. Allocated memory was 201.3MB in the beginning and 252.7MB in the end (delta: 51.4MB). Free memory was 145.6MB in the beginning and 118.5MB in the end (delta: 27.1MB). Peak memory consumption was 79.8MB. Max. memory is 8.0GB. [2022-09-16 12:01:08,020 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 162.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 12:01:08,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.29ms. Allocated memory is still 201.3MB. Free memory was 145.4MB in the beginning and 177.1MB in the end (delta: -31.7MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. [2022-09-16 12:01:08,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.15ms. Allocated memory is still 201.3MB. Free memory was 177.1MB in the beginning and 175.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 12:01:08,021 INFO L158 Benchmark]: Boogie Preprocessor took 21.11ms. Allocated memory is still 201.3MB. Free memory was 175.2MB in the beginning and 173.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 12:01:08,022 INFO L158 Benchmark]: RCFGBuilder took 503.76ms. Allocated memory is still 201.3MB. Free memory was 173.5MB in the beginning and 151.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-09-16 12:01:08,022 INFO L158 Benchmark]: TraceAbstraction took 4198.21ms. Allocated memory was 201.3MB in the beginning and 252.7MB in the end (delta: 51.4MB). Free memory was 150.9MB in the beginning and 118.5MB in the end (delta: 32.4MB). Peak memory consumption was 85.3MB. Max. memory is 8.0GB. [2022-09-16 12:01:08,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 201.3MB. Free memory is still 162.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 257.29ms. Allocated memory is still 201.3MB. Free memory was 145.4MB in the beginning and 177.1MB in the end (delta: -31.7MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.15ms. Allocated memory is still 201.3MB. Free memory was 177.1MB in the beginning and 175.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.11ms. Allocated memory is still 201.3MB. Free memory was 175.2MB in the beginning and 173.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 503.76ms. Allocated memory is still 201.3MB. Free memory was 173.5MB in the beginning and 151.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 4198.21ms. Allocated memory was 201.3MB in the beginning and 252.7MB in the end (delta: 51.4MB). Free memory was 150.9MB in the beginning and 118.5MB in the end (delta: 32.4MB). Peak memory consumption was 85.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 139 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 335 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 335 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 120 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 377 IncrementalHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 30 mSDtfsCounter, 377 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 510 GetRequests, 420 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=344occurred in iteration=3, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 689 NumberOfCodeBlocks, 653 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 830 ConstructedInterpolants, 0 QuantifiedInterpolants, 1644 SizeOfPredicates, 13 NumberOfNonLiveVariables, 589 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 124/268 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 12:01:08,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...