/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-bad-dot-product-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:53:05,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:53:05,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:53:05,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:53:05,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:53:05,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:53:05,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:53:05,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:53:05,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:53:05,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:53:05,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:53:05,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:53:05,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:53:05,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:53:05,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:53:05,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:53:05,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:53:05,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:53:05,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:53:05,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:53:05,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:53:05,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:53:05,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:53:05,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:53:05,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:53:05,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:53:05,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:53:05,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:53:05,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:53:05,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:53:05,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:53:05,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:53:05,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:53:05,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:53:05,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:53:05,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:53:05,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:53:05,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:53:05,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:53:05,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:53:05,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:53:05,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:53:05,234 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:53:05,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:53:05,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:53:05,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:53:05,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:53:05,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:53:05,236 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:53:05,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:53:05,236 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:53:05,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:53:05,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:53:05,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:53:05,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:53:05,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:53:05,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:53:05,237 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:53:05,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:53:05,238 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:53:05,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:53:05,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:53:05,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:53:05,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:53:05,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:53:05,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:53:05,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:53:05,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:53:05,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:53:05,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:53:05,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:53:05,240 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:53:05,240 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:53:05,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:53:05,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:53:05,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:53:05,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:53:05,450 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:53:05,451 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:53:05,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2022-09-16 11:53:05,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78714ef0c/9042a78a349d48ada7c3b6c6404e6692/FLAGf9d309e3d [2022-09-16 11:53:05,901 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:53:05,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2022-09-16 11:53:05,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78714ef0c/9042a78a349d48ada7c3b6c6404e6692/FLAGf9d309e3d [2022-09-16 11:53:05,930 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78714ef0c/9042a78a349d48ada7c3b6c6404e6692 [2022-09-16 11:53:05,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:53:05,934 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:53:05,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:53:05,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:53:05,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:53:05,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:53:05" (1/1) ... [2022-09-16 11:53:05,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eeb7420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:05, skipping insertion in model container [2022-09-16 11:53:05,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:53:05" (1/1) ... [2022-09-16 11:53:05,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:53:05,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:53:06,182 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-bad-dot-product-alt.wvr.c[3182,3195] [2022-09-16 11:53:06,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:53:06,197 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:53:06,222 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-bad-dot-product-alt.wvr.c[3182,3195] [2022-09-16 11:53:06,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:53:06,235 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:53:06,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:06 WrapperNode [2022-09-16 11:53:06,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:53:06,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:53:06,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:53:06,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:53:06,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:06" (1/1) ... [2022-09-16 11:53:06,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:06" (1/1) ... [2022-09-16 11:53:06,279 INFO L138 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 418 [2022-09-16 11:53:06,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:53:06,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:53:06,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:53:06,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:53:06,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:06" (1/1) ... [2022-09-16 11:53:06,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:06" (1/1) ... [2022-09-16 11:53:06,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:06" (1/1) ... [2022-09-16 11:53:06,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:06" (1/1) ... [2022-09-16 11:53:06,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:06" (1/1) ... [2022-09-16 11:53:06,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:06" (1/1) ... [2022-09-16 11:53:06,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:06" (1/1) ... [2022-09-16 11:53:06,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:53:06,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:53:06,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:53:06,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:53:06,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:06" (1/1) ... [2022-09-16 11:53:06,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:53:06,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:06,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:53:06,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:53:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:53:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-09-16 11:53:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:53:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:53:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:53:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-09-16 11:53:06,401 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:53:06,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:53:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:53:06,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:53:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:53:06,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:53:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:53:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:53:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:53:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:53:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:53:06,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:53:06,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:53:06,404 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:53:06,488 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:53:06,489 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:53:07,074 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:53:07,355 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:53:07,356 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-09-16 11:53:07,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:53:07 BoogieIcfgContainer [2022-09-16 11:53:07,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:53:07,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:53:07,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:53:07,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:53:07,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:53:05" (1/3) ... [2022-09-16 11:53:07,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50832cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:53:07, skipping insertion in model container [2022-09-16 11:53:07,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:06" (2/3) ... [2022-09-16 11:53:07,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50832cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:53:07, skipping insertion in model container [2022-09-16 11:53:07,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:53:07" (3/3) ... [2022-09-16 11:53:07,364 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2022-09-16 11:53:07,379 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:53:07,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-09-16 11:53:07,380 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:53:07,489 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:53:07,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 397 transitions, 818 flow [2022-09-16 11:53:07,603 INFO L130 PetriNetUnfolder]: 35/394 cut-off events. [2022-09-16 11:53:07,604 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:53:07,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 394 events. 35/394 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 902 event pairs, 0 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 316. Up to 2 conditions per place. [2022-09-16 11:53:07,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 372 places, 397 transitions, 818 flow [2022-09-16 11:53:07,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 373 transitions, 761 flow [2022-09-16 11:53:07,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:53:07,631 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;@257b3db3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:53:07,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2022-09-16 11:53:07,638 INFO L130 PetriNetUnfolder]: 3/67 cut-off events. [2022-09-16 11:53:07,638 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:53:07,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:07,639 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] [2022-09-16 11:53:07,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-09-16 11:53:07,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:07,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1486072453, now seen corresponding path program 1 times [2022-09-16 11:53:07,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:07,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782900991] [2022-09-16 11:53:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:07,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:07,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:07,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782900991] [2022-09-16 11:53:07,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782900991] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:07,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:07,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:53:07,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510666572] [2022-09-16 11:53:07,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:07,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:53:07,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:07,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:53:07,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:53:07,837 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 397 [2022-09-16 11:53:07,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 373 transitions, 761 flow. Second operand has 4 states, 4 states have (on average 315.5) internal successors, (1262), 4 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:07,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:07,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 397 [2022-09-16 11:53:07,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:09,025 INFO L130 PetriNetUnfolder]: 1261/5851 cut-off events. [2022-09-16 11:53:09,025 INFO L131 PetriNetUnfolder]: For 338/338 co-relation queries the response was YES. [2022-09-16 11:53:09,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7684 conditions, 5851 events. 1261/5851 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 65381 event pairs, 910 based on Foata normal form. 518/4635 useless extension candidates. Maximal degree in co-relation 3327. Up to 794 conditions per place. [2022-09-16 11:53:09,078 INFO L137 encePairwiseOnDemand]: 353/397 looper letters, 88 selfloop transitions, 14 changer transitions 8/395 dead transitions. [2022-09-16 11:53:09,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 395 transitions, 1024 flow [2022-09-16 11:53:09,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:53:09,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:53:09,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1720 transitions. [2022-09-16 11:53:09,097 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8664987405541562 [2022-09-16 11:53:09,097 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1720 transitions. [2022-09-16 11:53:09,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1720 transitions. [2022-09-16 11:53:09,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:09,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1720 transitions. [2022-09-16 11:53:09,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 344.0) internal successors, (1720), 5 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:09,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:09,116 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:09,118 INFO L175 Difference]: Start difference. First operand has 349 places, 373 transitions, 761 flow. Second operand 5 states and 1720 transitions. [2022-09-16 11:53:09,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 395 transitions, 1024 flow [2022-09-16 11:53:09,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 395 transitions, 1006 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:53:09,130 INFO L231 Difference]: Finished difference. Result has 345 places, 352 transitions, 792 flow [2022-09-16 11:53:09,132 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=792, PETRI_PLACES=345, PETRI_TRANSITIONS=352} [2022-09-16 11:53:09,134 INFO L287 CegarLoopForPetriNet]: 349 programPoint places, -4 predicate places. [2022-09-16 11:53:09,135 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 352 transitions, 792 flow [2022-09-16 11:53:09,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 315.5) internal successors, (1262), 4 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:09,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:09,136 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, 1, 1, 1] [2022-09-16 11:53:09,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:53:09,136 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-09-16 11:53:09,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:09,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1594053183, now seen corresponding path program 1 times [2022-09-16 11:53:09,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:09,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615365013] [2022-09-16 11:53:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:09,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:09,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:09,206 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 11:53:09,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:09,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615365013] [2022-09-16 11:53:09,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615365013] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:53:09,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421827363] [2022-09-16 11:53:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:09,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:09,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:09,238 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:53:09,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:53:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:09,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:53:09,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:53:09,411 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 11:53:09,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:53:09,484 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 11:53:09,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421827363] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:53:09,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:53:09,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:53:09,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386922766] [2022-09-16 11:53:09,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:53:09,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:53:09,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:09,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:53:09,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:53:09,489 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 397 [2022-09-16 11:53:09,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 352 transitions, 792 flow. Second operand has 12 states, 12 states have (on average 316.6666666666667) internal successors, (3800), 12 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:09,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:09,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 397 [2022-09-16 11:53:09,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:11,808 INFO L130 PetriNetUnfolder]: 3151/14472 cut-off events. [2022-09-16 11:53:11,808 INFO L131 PetriNetUnfolder]: For 253/253 co-relation queries the response was YES. [2022-09-16 11:53:11,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18875 conditions, 14472 events. 3151/14472 cut-off events. For 253/253 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 186949 event pairs, 2275 based on Foata normal form. 9/10186 useless extension candidates. Maximal degree in co-relation 14736. Up to 785 conditions per place. [2022-09-16 11:53:11,925 INFO L137 encePairwiseOnDemand]: 374/397 looper letters, 184 selfloop transitions, 62 changer transitions 0/531 dead transitions. [2022-09-16 11:53:11,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 531 transitions, 1744 flow [2022-09-16 11:53:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:53:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:53:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5907 transitions. [2022-09-16 11:53:11,934 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8266162888329135 [2022-09-16 11:53:11,934 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5907 transitions. [2022-09-16 11:53:11,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5907 transitions. [2022-09-16 11:53:11,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:11,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5907 transitions. [2022-09-16 11:53:11,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 328.1666666666667) internal successors, (5907), 18 states have internal predecessors, (5907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:11,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 397.0) internal successors, (7543), 19 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:11,957 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 397.0) internal successors, (7543), 19 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:11,957 INFO L175 Difference]: Start difference. First operand has 345 places, 352 transitions, 792 flow. Second operand 18 states and 5907 transitions. [2022-09-16 11:53:11,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 531 transitions, 1744 flow [2022-09-16 11:53:11,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 531 transitions, 1736 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:53:11,965 INFO L231 Difference]: Finished difference. Result has 357 places, 394 transitions, 1154 flow [2022-09-16 11:53:11,966 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1154, PETRI_PLACES=357, PETRI_TRANSITIONS=394} [2022-09-16 11:53:11,966 INFO L287 CegarLoopForPetriNet]: 349 programPoint places, 8 predicate places. [2022-09-16 11:53:11,967 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 394 transitions, 1154 flow [2022-09-16 11:53:11,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 316.6666666666667) internal successors, (3800), 12 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:11,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:11,969 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, 1, 1, 1] [2022-09-16 11:53:12,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:53:12,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:12,206 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-09-16 11:53:12,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:12,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2123959915, now seen corresponding path program 1 times [2022-09-16 11:53:12,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:12,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282071393] [2022-09-16 11:53:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:12,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:12,318 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 11:53:12,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:12,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282071393] [2022-09-16 11:53:12,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282071393] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:53:12,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162549238] [2022-09-16 11:53:12,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:12,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:12,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:12,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:53:12,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:53:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:12,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:53:12,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:53:12,472 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 11:53:12,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:53:12,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162549238] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:12,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:53:12,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:53:12,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693389117] [2022-09-16 11:53:12,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:12,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:53:12,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:12,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:53:12,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:53:12,475 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 397 [2022-09-16 11:53:12,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 394 transitions, 1154 flow. Second operand has 6 states, 6 states have (on average 316.3333333333333) internal successors, (1898), 6 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:12,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:12,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 397 [2022-09-16 11:53:12,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:14,637 INFO L130 PetriNetUnfolder]: 3151/14460 cut-off events. [2022-09-16 11:53:14,637 INFO L131 PetriNetUnfolder]: For 405/405 co-relation queries the response was YES. [2022-09-16 11:53:14,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18931 conditions, 14460 events. 3151/14460 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 880. Compared 186770 event pairs, 2275 based on Foata normal form. 12/10177 useless extension candidates. Maximal degree in co-relation 15099. Up to 3068 conditions per place. [2022-09-16 11:53:14,739 INFO L137 encePairwiseOnDemand]: 380/397 looper letters, 89 selfloop transitions, 43 changer transitions 0/417 dead transitions. [2022-09-16 11:53:14,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 417 transitions, 1419 flow [2022-09-16 11:53:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:53:14,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:53:14,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2300 transitions. [2022-09-16 11:53:14,743 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8276358402302987 [2022-09-16 11:53:14,743 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2300 transitions. [2022-09-16 11:53:14,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2300 transitions. [2022-09-16 11:53:14,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:14,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2300 transitions. [2022-09-16 11:53:14,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 328.57142857142856) internal successors, (2300), 7 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:14,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:14,751 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 397.0) internal successors, (3176), 8 states have internal predecessors, (3176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:14,751 INFO L175 Difference]: Start difference. First operand has 357 places, 394 transitions, 1154 flow. Second operand 7 states and 2300 transitions. [2022-09-16 11:53:14,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 417 transitions, 1419 flow [2022-09-16 11:53:14,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 417 transitions, 1303 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-09-16 11:53:14,759 INFO L231 Difference]: Finished difference. Result has 351 places, 382 transitions, 1043 flow [2022-09-16 11:53:14,760 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1043, PETRI_PLACES=351, PETRI_TRANSITIONS=382} [2022-09-16 11:53:14,760 INFO L287 CegarLoopForPetriNet]: 349 programPoint places, 2 predicate places. [2022-09-16 11:53:14,761 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 382 transitions, 1043 flow [2022-09-16 11:53:14,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 316.3333333333333) internal successors, (1898), 6 states have internal predecessors, (1898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:14,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:14,762 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, 1, 1, 1] [2022-09-16 11:53:14,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 11:53:14,975 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,SelfDestructingSolverStorable2 [2022-09-16 11:53:14,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-09-16 11:53:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:14,976 INFO L85 PathProgramCache]: Analyzing trace with hash 293966213, now seen corresponding path program 2 times [2022-09-16 11:53:14,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:14,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797311194] [2022-09-16 11:53:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:14,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:15,195 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 11:53:15,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:15,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797311194] [2022-09-16 11:53:15,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797311194] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:53:15,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200768822] [2022-09-16 11:53:15,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:53:15,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:15,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:15,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:53:15,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:53:15,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:53:15,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:53:15,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:53:15,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:53:15,460 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 11:53:15,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:53:15,566 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 11:53:15,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200768822] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:53:15,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:53:15,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:53:15,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896954756] [2022-09-16 11:53:15,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:53:15,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:53:15,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:15,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:53:15,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:53:15,571 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 397 [2022-09-16 11:53:15,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 382 transitions, 1043 flow. Second operand has 18 states, 18 states have (on average 292.6111111111111) internal successors, (5267), 18 states have internal predecessors, (5267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:15,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:15,575 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 397 [2022-09-16 11:53:15,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:25,236 INFO L130 PetriNetUnfolder]: 15898/57317 cut-off events. [2022-09-16 11:53:25,237 INFO L131 PetriNetUnfolder]: For 1009/1009 co-relation queries the response was YES. [2022-09-16 11:53:25,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78814 conditions, 57317 events. 15898/57317 cut-off events. For 1009/1009 co-relation queries the response was YES. Maximal size of possible extension queue 2255. Compared 832688 event pairs, 11018 based on Foata normal form. 6/38388 useless extension candidates. Maximal degree in co-relation 45052. Up to 1526 conditions per place. [2022-09-16 11:53:25,728 INFO L137 encePairwiseOnDemand]: 369/397 looper letters, 471 selfloop transitions, 93 changer transitions 0/824 dead transitions. [2022-09-16 11:53:25,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 824 transitions, 3221 flow [2022-09-16 11:53:25,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:53:25,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-09-16 11:53:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 14731 transitions. [2022-09-16 11:53:25,755 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7572610908343186 [2022-09-16 11:53:25,755 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 14731 transitions. [2022-09-16 11:53:25,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 14731 transitions. [2022-09-16 11:53:25,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:25,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 14731 transitions. [2022-09-16 11:53:25,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 300.6326530612245) internal successors, (14731), 49 states have internal predecessors, (14731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:25,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 397.0) internal successors, (19850), 50 states have internal predecessors, (19850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:25,825 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 397.0) internal successors, (19850), 50 states have internal predecessors, (19850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:25,825 INFO L175 Difference]: Start difference. First operand has 351 places, 382 transitions, 1043 flow. Second operand 49 states and 14731 transitions. [2022-09-16 11:53:25,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 824 transitions, 3221 flow [2022-09-16 11:53:25,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 824 transitions, 3152 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:53:25,840 INFO L231 Difference]: Finished difference. Result has 402 places, 415 transitions, 1385 flow [2022-09-16 11:53:25,841 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1385, PETRI_PLACES=402, PETRI_TRANSITIONS=415} [2022-09-16 11:53:25,841 INFO L287 CegarLoopForPetriNet]: 349 programPoint places, 53 predicate places. [2022-09-16 11:53:25,841 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 415 transitions, 1385 flow [2022-09-16 11:53:25,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 292.6111111111111) internal successors, (5267), 18 states have internal predecessors, (5267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:25,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:25,843 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:53:25,867 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 11:53:26,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:26,228 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-09-16 11:53:26,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:26,228 INFO L85 PathProgramCache]: Analyzing trace with hash 906517914, now seen corresponding path program 1 times [2022-09-16 11:53:26,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:26,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743144655] [2022-09-16 11:53:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:26,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:26,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:26,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743144655] [2022-09-16 11:53:26,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743144655] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:26,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:26,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:53:26,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640127780] [2022-09-16 11:53:26,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:26,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:53:26,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:26,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:53:26,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:53:26,312 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 397 [2022-09-16 11:53:26,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 415 transitions, 1385 flow. Second operand has 4 states, 4 states have (on average 339.5) internal successors, (1358), 4 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:26,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:26,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 397 [2022-09-16 11:53:26,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:32,452 INFO L130 PetriNetUnfolder]: 8807/39972 cut-off events. [2022-09-16 11:53:32,452 INFO L131 PetriNetUnfolder]: For 1071/1071 co-relation queries the response was YES. [2022-09-16 11:53:32,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52230 conditions, 39972 events. 8807/39972 cut-off events. For 1071/1071 co-relation queries the response was YES. Maximal size of possible extension queue 1518. Compared 583807 event pairs, 6370 based on Foata normal form. 0/28002 useless extension candidates. Maximal degree in co-relation 48446. Up to 5364 conditions per place. [2022-09-16 11:53:32,847 INFO L137 encePairwiseOnDemand]: 391/397 looper letters, 56 selfloop transitions, 4 changer transitions 0/443 dead transitions. [2022-09-16 11:53:32,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 443 transitions, 1567 flow [2022-09-16 11:53:32,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:53:32,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:53:32,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1752 transitions. [2022-09-16 11:53:32,850 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8826196473551637 [2022-09-16 11:53:32,850 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1752 transitions. [2022-09-16 11:53:32,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1752 transitions. [2022-09-16 11:53:32,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:32,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1752 transitions. [2022-09-16 11:53:32,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 350.4) internal successors, (1752), 5 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:32,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:32,856 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:32,856 INFO L175 Difference]: Start difference. First operand has 402 places, 415 transitions, 1385 flow. Second operand 5 states and 1752 transitions. [2022-09-16 11:53:32,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 443 transitions, 1567 flow [2022-09-16 11:53:32,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 443 transitions, 1450 flow, removed 15 selfloop flow, removed 14 redundant places. [2022-09-16 11:53:32,865 INFO L231 Difference]: Finished difference. Result has 395 places, 418 transitions, 1298 flow [2022-09-16 11:53:32,865 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1298, PETRI_PLACES=395, PETRI_TRANSITIONS=418} [2022-09-16 11:53:32,866 INFO L287 CegarLoopForPetriNet]: 349 programPoint places, 46 predicate places. [2022-09-16 11:53:32,866 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 418 transitions, 1298 flow [2022-09-16 11:53:32,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 339.5) internal successors, (1358), 4 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:32,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:32,867 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:53:32,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:53:32,867 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-09-16 11:53:32,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:32,867 INFO L85 PathProgramCache]: Analyzing trace with hash -733952552, now seen corresponding path program 1 times [2022-09-16 11:53:32,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:32,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640097430] [2022-09-16 11:53:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:32,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:32,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:32,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640097430] [2022-09-16 11:53:32,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640097430] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:32,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:32,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:53:32,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757478146] [2022-09-16 11:53:32,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:32,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:53:32,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:32,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:53:32,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:53:32,936 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 397 [2022-09-16 11:53:32,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 418 transitions, 1298 flow. Second operand has 7 states, 7 states have (on average 303.42857142857144) internal successors, (2124), 7 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:32,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:32,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 397 [2022-09-16 11:53:32,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:50,350 INFO L130 PetriNetUnfolder]: 29212/100152 cut-off events. [2022-09-16 11:53:50,350 INFO L131 PetriNetUnfolder]: For 2622/2652 co-relation queries the response was YES. [2022-09-16 11:53:51,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142411 conditions, 100152 events. 29212/100152 cut-off events. For 2622/2652 co-relation queries the response was YES. Maximal size of possible extension queue 4116. Compared 1551831 event pairs, 20683 based on Foata normal form. 0/68364 useless extension candidates. Maximal degree in co-relation 131754. Up to 16461 conditions per place. [2022-09-16 11:53:51,707 INFO L137 encePairwiseOnDemand]: 381/397 looper letters, 299 selfloop transitions, 50 changer transitions 0/637 dead transitions. [2022-09-16 11:53:51,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 637 transitions, 2732 flow [2022-09-16 11:53:51,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:53:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:53:51,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4752 transitions. [2022-09-16 11:53:51,715 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7979848866498741 [2022-09-16 11:53:51,716 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4752 transitions. [2022-09-16 11:53:51,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4752 transitions. [2022-09-16 11:53:51,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:51,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4752 transitions. [2022-09-16 11:53:51,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 316.8) internal successors, (4752), 15 states have internal predecessors, (4752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:51,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 397.0) internal successors, (6352), 16 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:51,736 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 397.0) internal successors, (6352), 16 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:51,736 INFO L175 Difference]: Start difference. First operand has 395 places, 418 transitions, 1298 flow. Second operand 15 states and 4752 transitions. [2022-09-16 11:53:51,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 637 transitions, 2732 flow [2022-09-16 11:53:51,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 637 transitions, 2730 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:53:51,751 INFO L231 Difference]: Finished difference. Result has 415 places, 445 transitions, 1611 flow [2022-09-16 11:53:51,751 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1611, PETRI_PLACES=415, PETRI_TRANSITIONS=445} [2022-09-16 11:53:51,753 INFO L287 CegarLoopForPetriNet]: 349 programPoint places, 66 predicate places. [2022-09-16 11:53:51,753 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 445 transitions, 1611 flow [2022-09-16 11:53:51,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 303.42857142857144) internal successors, (2124), 7 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:51,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:51,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:53:51,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:53:51,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-09-16 11:53:51,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1747617904, now seen corresponding path program 1 times [2022-09-16 11:53:51,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:51,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312494993] [2022-09-16 11:53:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:51,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:51,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:51,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312494993] [2022-09-16 11:53:51,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312494993] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:51,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:51,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:53:51,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310152984] [2022-09-16 11:53:51,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:51,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:53:51,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:51,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:53:51,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:53:51,846 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 340 out of 397 [2022-09-16 11:53:51,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 445 transitions, 1611 flow. Second operand has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:51,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:51,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 340 of 397 [2022-09-16 11:53:51,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:10,311 INFO L130 PetriNetUnfolder]: 29725/85556 cut-off events. [2022-09-16 11:54:10,312 INFO L131 PetriNetUnfolder]: For 4840/4840 co-relation queries the response was YES. [2022-09-16 11:54:11,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133897 conditions, 85556 events. 29725/85556 cut-off events. For 4840/4840 co-relation queries the response was YES. Maximal size of possible extension queue 4209. Compared 1238430 event pairs, 17677 based on Foata normal form. 0/55433 useless extension candidates. Maximal degree in co-relation 133766. Up to 30092 conditions per place. [2022-09-16 11:54:11,954 INFO L137 encePairwiseOnDemand]: 392/397 looper letters, 78 selfloop transitions, 4 changer transitions 0/497 dead transitions. [2022-09-16 11:54:11,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 497 transitions, 1891 flow [2022-09-16 11:54:11,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:54:11,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:54:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2123 transitions. [2022-09-16 11:54:11,959 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8912678421494542 [2022-09-16 11:54:11,959 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2123 transitions. [2022-09-16 11:54:11,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2123 transitions. [2022-09-16 11:54:11,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:11,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2123 transitions. [2022-09-16 11:54:11,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 353.8333333333333) internal successors, (2123), 6 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:11,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:11,967 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 397.0) internal successors, (2779), 7 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:11,967 INFO L175 Difference]: Start difference. First operand has 415 places, 445 transitions, 1611 flow. Second operand 6 states and 2123 transitions. [2022-09-16 11:54:11,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 497 transitions, 1891 flow [2022-09-16 11:54:11,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 497 transitions, 1891 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:54:11,980 INFO L231 Difference]: Finished difference. Result has 424 places, 448 transitions, 1640 flow [2022-09-16 11:54:11,981 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1640, PETRI_PLACES=424, PETRI_TRANSITIONS=448} [2022-09-16 11:54:11,981 INFO L287 CegarLoopForPetriNet]: 349 programPoint places, 75 predicate places. [2022-09-16 11:54:11,981 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 448 transitions, 1640 flow [2022-09-16 11:54:11,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 342.0) internal successors, (1710), 5 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:11,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:11,982 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:54:11,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:54:11,982 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-09-16 11:54:11,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:11,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1014849746, now seen corresponding path program 1 times [2022-09-16 11:54:11,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:11,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556618261] [2022-09-16 11:54:11,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:11,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:12,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:12,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556618261] [2022-09-16 11:54:12,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556618261] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:12,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:12,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:54:12,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785945420] [2022-09-16 11:54:12,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:12,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:54:12,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:12,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:54:12,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:54:12,211 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 397 [2022-09-16 11:54:12,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 448 transitions, 1640 flow. Second operand has 4 states, 4 states have (on average 341.75) internal successors, (1367), 4 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:12,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:12,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 397 [2022-09-16 11:54:12,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:54:33,263 INFO L130 PetriNetUnfolder]: 33996/94366 cut-off events. [2022-09-16 11:54:33,264 INFO L131 PetriNetUnfolder]: For 14102/14102 co-relation queries the response was YES. [2022-09-16 11:54:34,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164298 conditions, 94366 events. 33996/94366 cut-off events. For 14102/14102 co-relation queries the response was YES. Maximal size of possible extension queue 4566. Compared 1360464 event pairs, 19306 based on Foata normal form. 806/63029 useless extension candidates. Maximal degree in co-relation 164163. Up to 32202 conditions per place. [2022-09-16 11:54:34,920 INFO L137 encePairwiseOnDemand]: 393/397 looper letters, 68 selfloop transitions, 3 changer transitions 0/487 dead transitions. [2022-09-16 11:54:34,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 487 transitions, 1877 flow [2022-09-16 11:54:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:54:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:54:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1767 transitions. [2022-09-16 11:54:34,922 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.890176322418136 [2022-09-16 11:54:34,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1767 transitions. [2022-09-16 11:54:34,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1767 transitions. [2022-09-16 11:54:34,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:54:34,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1767 transitions. [2022-09-16 11:54:34,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 353.4) internal successors, (1767), 5 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:34,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:34,926 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 397.0) internal successors, (2382), 6 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:34,926 INFO L175 Difference]: Start difference. First operand has 424 places, 448 transitions, 1640 flow. Second operand 5 states and 1767 transitions. [2022-09-16 11:54:34,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 487 transitions, 1877 flow [2022-09-16 11:54:38,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 487 transitions, 1877 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:54:38,535 INFO L231 Difference]: Finished difference. Result has 431 places, 450 transitions, 1665 flow [2022-09-16 11:54:38,535 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=397, PETRI_DIFFERENCE_MINUEND_FLOW=1640, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1665, PETRI_PLACES=431, PETRI_TRANSITIONS=450} [2022-09-16 11:54:38,536 INFO L287 CegarLoopForPetriNet]: 349 programPoint places, 82 predicate places. [2022-09-16 11:54:38,536 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 450 transitions, 1665 flow [2022-09-16 11:54:38,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 341.75) internal successors, (1367), 4 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:38,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:54:38,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:54:38,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:54:38,536 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2022-09-16 11:54:38,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:54:38,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1868190286, now seen corresponding path program 1 times [2022-09-16 11:54:38,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:54:38,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557130229] [2022-09-16 11:54:38,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:54:38,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:54:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:54:38,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:54:38,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:54:38,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557130229] [2022-09-16 11:54:38,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557130229] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:54:38,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:54:38,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:54:38,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544611040] [2022-09-16 11:54:38,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:54:38,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:54:38,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:54:38,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:54:38,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:54:38,569 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 339 out of 397 [2022-09-16 11:54:38,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 450 transitions, 1665 flow. Second operand has 4 states, 4 states have (on average 341.75) internal successors, (1367), 4 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:54:38,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:54:38,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 339 of 397 [2022-09-16 11:54:38,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand