/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:50:31,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:50:31,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:50:31,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:50:31,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:50:31,212 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:50:31,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:50:31,218 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:50:31,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:50:31,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:50:31,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:50:31,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:50:31,227 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:50:31,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:50:31,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:50:31,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:50:31,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:50:31,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:50:31,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:50:31,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:50:31,234 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:50:31,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:50:31,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:50:31,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:50:31,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:50:31,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:50:31,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:50:31,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:50:31,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:50:31,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:50:31,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:50:31,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:50:31,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:50:31,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:50:31,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:50:31,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:50:31,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:50:31,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:50:31,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:50:31,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:50:31,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:50:31,260 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:50:31,290 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:50:31,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:50:31,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:50:31,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:50:31,292 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:50:31,292 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:50:31,292 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:50:31,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:50:31,292 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:50:31,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:50:31,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:50:31,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:50:31,293 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:50:31,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:50:31,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:50:31,294 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:50:31,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:50:31,294 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:50:31,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:50:31,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:50:31,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:50:31,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:50:31,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:50:31,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:50:31,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:50:31,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:50:31,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:50:31,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:50:31,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:50:31,295 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:50:31,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:50:31,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:50:31,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:50:31,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:50:31,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:50:31,549 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:50:31,551 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:50:31,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2022-09-16 11:50:31,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd07e1ede/f1985c83f54a43139f44a3b506eb5820/FLAG8750730ac [2022-09-16 11:50:32,036 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:50:32,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2022-09-16 11:50:32,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd07e1ede/f1985c83f54a43139f44a3b506eb5820/FLAG8750730ac [2022-09-16 11:50:32,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd07e1ede/f1985c83f54a43139f44a3b506eb5820 [2022-09-16 11:50:32,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:50:32,073 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:50:32,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:50:32,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:50:32,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:50:32,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:50:32" (1/1) ... [2022-09-16 11:50:32,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61797499 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:32, skipping insertion in model container [2022-09-16 11:50:32,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:50:32" (1/1) ... [2022-09-16 11:50:32,086 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:50:32,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:50:32,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-09-16 11:50:32,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:50:32,307 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:50:32,332 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c[4225,4238] [2022-09-16 11:50:32,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:50:32,351 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:50:32,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:32 WrapperNode [2022-09-16 11:50:32,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:50:32,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:50:32,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:50:32,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:50:32,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:32" (1/1) ... [2022-09-16 11:50:32,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:32" (1/1) ... [2022-09-16 11:50:32,400 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 482 [2022-09-16 11:50:32,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:50:32,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:50:32,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:50:32,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:50:32,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:32" (1/1) ... [2022-09-16 11:50:32,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:32" (1/1) ... [2022-09-16 11:50:32,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:32" (1/1) ... [2022-09-16 11:50:32,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:32" (1/1) ... [2022-09-16 11:50:32,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:32" (1/1) ... [2022-09-16 11:50:32,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:32" (1/1) ... [2022-09-16 11:50:32,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:32" (1/1) ... [2022-09-16 11:50:32,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:50:32,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:50:32,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:50:32,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:50:32,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:32" (1/1) ... [2022-09-16 11:50:32,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:50:32,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:32,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:50:32,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:50:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:50:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:50:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:50:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:50:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:50:32,570 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:50:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:50:32,570 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:50:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:50:32,571 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:50:32,571 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:50:32,571 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:50:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:50:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-09-16 11:50:32,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-09-16 11:50:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-09-16 11:50:32,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-09-16 11:50:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:50:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:50:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:50:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:50:32,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:50:32,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:50:32,575 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:50:32,745 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:50:32,747 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:50:33,383 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:50:33,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:50:33,924 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-16 11:50:33,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:50:33 BoogieIcfgContainer [2022-09-16 11:50:33,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:50:33,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:50:33,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:50:33,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:50:33,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:50:32" (1/3) ... [2022-09-16 11:50:33,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138354c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:50:33, skipping insertion in model container [2022-09-16 11:50:33,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:50:32" (2/3) ... [2022-09-16 11:50:33,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138354c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:50:33, skipping insertion in model container [2022-09-16 11:50:33,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:50:33" (3/3) ... [2022-09-16 11:50:33,936 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2022-09-16 11:50:33,953 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:50:33,953 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2022-09-16 11:50:33,954 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:50:34,189 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-09-16 11:50:34,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 374 transitions, 820 flow [2022-09-16 11:50:34,329 INFO L130 PetriNetUnfolder]: 21/316 cut-off events. [2022-09-16 11:50:34,329 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-09-16 11:50:34,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 316 events. 21/316 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 565 event pairs, 0 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 263. Up to 3 conditions per place. [2022-09-16 11:50:34,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 374 transitions, 820 flow [2022-09-16 11:50:34,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 297 transitions, 639 flow [2022-09-16 11:50:34,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:50:34,358 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;@29fc921, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:50:34,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2022-09-16 11:50:34,368 INFO L130 PetriNetUnfolder]: 1/72 cut-off events. [2022-09-16 11:50:34,368 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:50:34,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:34,369 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] [2022-09-16 11:50:34,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-09-16 11:50:34,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:34,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1168030213, now seen corresponding path program 1 times [2022-09-16 11:50:34,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:34,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278508886] [2022-09-16 11:50:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:34,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:34,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:34,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278508886] [2022-09-16 11:50:34,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278508886] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:34,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:34,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:50:34,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463427686] [2022-09-16 11:50:34,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:34,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:50:34,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:50:34,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:50:34,671 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 378 [2022-09-16 11:50:34,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 297 transitions, 639 flow. Second operand has 5 states, 5 states have (on average 236.4) internal successors, (1182), 5 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:34,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:34,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 378 [2022-09-16 11:50:34,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:39,576 INFO L130 PetriNetUnfolder]: 15409/21358 cut-off events. [2022-09-16 11:50:39,576 INFO L131 PetriNetUnfolder]: For 4925/4959 co-relation queries the response was YES. [2022-09-16 11:50:39,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46806 conditions, 21358 events. 15409/21358 cut-off events. For 4925/4959 co-relation queries the response was YES. Maximal size of possible extension queue 1743. Compared 139339 event pairs, 11952 based on Foata normal form. 2437/10156 useless extension candidates. Maximal degree in co-relation 46085. Up to 20612 conditions per place. [2022-09-16 11:50:39,851 INFO L137 encePairwiseOnDemand]: 345/378 looper letters, 72 selfloop transitions, 5 changer transitions 4/269 dead transitions. [2022-09-16 11:50:39,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 269 transitions, 745 flow [2022-09-16 11:50:39,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:50:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:50:39,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1284 transitions. [2022-09-16 11:50:39,871 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6793650793650794 [2022-09-16 11:50:39,871 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1284 transitions. [2022-09-16 11:50:39,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1284 transitions. [2022-09-16 11:50:39,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:39,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1284 transitions. [2022-09-16 11:50:39,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 256.8) internal successors, (1284), 5 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:39,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:39,894 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:39,895 INFO L175 Difference]: Start difference. First operand has 296 places, 297 transitions, 639 flow. Second operand 5 states and 1284 transitions. [2022-09-16 11:50:39,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 269 transitions, 745 flow [2022-09-16 11:50:39,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 269 transitions, 716 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-09-16 11:50:39,915 INFO L231 Difference]: Finished difference. Result has 272 places, 265 transitions, 556 flow [2022-09-16 11:50:39,917 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=272, PETRI_TRANSITIONS=265} [2022-09-16 11:50:39,920 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, -24 predicate places. [2022-09-16 11:50:39,920 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 265 transitions, 556 flow [2022-09-16 11:50:39,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 236.4) internal successors, (1182), 5 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:39,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:39,921 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] [2022-09-16 11:50:39,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:50:39,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-09-16 11:50:39,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:39,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1849196766, now seen corresponding path program 1 times [2022-09-16 11:50:39,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:39,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51472292] [2022-09-16 11:50:39,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:39,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:40,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:40,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51472292] [2022-09-16 11:50:40,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51472292] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:40,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:40,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:40,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461266582] [2022-09-16 11:50:40,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:40,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:40,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:40,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:40,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:40,047 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 378 [2022-09-16 11:50:40,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 265 transitions, 556 flow. Second operand has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:40,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:40,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 378 [2022-09-16 11:50:40,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:43,967 INFO L130 PetriNetUnfolder]: 15409/21353 cut-off events. [2022-09-16 11:50:43,968 INFO L131 PetriNetUnfolder]: For 1225/1259 co-relation queries the response was YES. [2022-09-16 11:50:44,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43256 conditions, 21353 events. 15409/21353 cut-off events. For 1225/1259 co-relation queries the response was YES. Maximal size of possible extension queue 1740. Compared 139179 event pairs, 11952 based on Foata normal form. 0/7719 useless extension candidates. Maximal degree in co-relation 43173. Up to 20598 conditions per place. [2022-09-16 11:50:44,168 INFO L137 encePairwiseOnDemand]: 374/378 looper letters, 61 selfloop transitions, 3 changer transitions 0/264 dead transitions. [2022-09-16 11:50:44,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 264 transitions, 682 flow [2022-09-16 11:50:44,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:50:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:50:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1089 transitions. [2022-09-16 11:50:44,171 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7202380952380952 [2022-09-16 11:50:44,172 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1089 transitions. [2022-09-16 11:50:44,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1089 transitions. [2022-09-16 11:50:44,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:44,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1089 transitions. [2022-09-16 11:50:44,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 272.25) internal successors, (1089), 4 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:44,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 378.0) internal successors, (1890), 5 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:44,178 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 378.0) internal successors, (1890), 5 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:44,178 INFO L175 Difference]: Start difference. First operand has 272 places, 265 transitions, 556 flow. Second operand 4 states and 1089 transitions. [2022-09-16 11:50:44,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 264 transitions, 682 flow [2022-09-16 11:50:44,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 264 transitions, 672 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:50:44,187 INFO L231 Difference]: Finished difference. Result has 266 places, 264 transitions, 550 flow [2022-09-16 11:50:44,188 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=550, PETRI_PLACES=266, PETRI_TRANSITIONS=264} [2022-09-16 11:50:44,189 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, -30 predicate places. [2022-09-16 11:50:44,190 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 264 transitions, 550 flow [2022-09-16 11:50:44,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:44,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:44,191 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] [2022-09-16 11:50:44,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:50:44,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-09-16 11:50:44,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:44,193 INFO L85 PathProgramCache]: Analyzing trace with hash -485653418, now seen corresponding path program 1 times [2022-09-16 11:50:44,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:44,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532095096] [2022-09-16 11:50:44,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:44,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:50:44,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:44,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532095096] [2022-09-16 11:50:44,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532095096] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:50:44,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:50:44,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:50:44,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342365015] [2022-09-16 11:50:44,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:50:44,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:50:44,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:50:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:50:44,282 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 378 [2022-09-16 11:50:44,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 264 transitions, 550 flow. Second operand has 4 states, 4 states have (on average 260.5) internal successors, (1042), 4 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:44,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:44,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 378 [2022-09-16 11:50:44,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:50:50,930 INFO L130 PetriNetUnfolder]: 30247/41713 cut-off events. [2022-09-16 11:50:50,931 INFO L131 PetriNetUnfolder]: For 2412/2476 co-relation queries the response was YES. [2022-09-16 11:50:51,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84619 conditions, 41713 events. 30247/41713 cut-off events. For 2412/2476 co-relation queries the response was YES. Maximal size of possible extension queue 2403. Compared 290165 event pairs, 23430 based on Foata normal form. 0/14815 useless extension candidates. Maximal degree in co-relation 84549. Up to 20176 conditions per place. [2022-09-16 11:50:51,471 INFO L137 encePairwiseOnDemand]: 372/378 looper letters, 122 selfloop transitions, 4 changer transitions 0/325 dead transitions. [2022-09-16 11:50:51,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 325 transitions, 940 flow [2022-09-16 11:50:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:50:51,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:50:51,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1423 transitions. [2022-09-16 11:50:51,475 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7529100529100529 [2022-09-16 11:50:51,475 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1423 transitions. [2022-09-16 11:50:51,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1423 transitions. [2022-09-16 11:50:51,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:50:51,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1423 transitions. [2022-09-16 11:50:51,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 284.6) internal successors, (1423), 5 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:51,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:51,483 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:51,483 INFO L175 Difference]: Start difference. First operand has 266 places, 264 transitions, 550 flow. Second operand 5 states and 1423 transitions. [2022-09-16 11:50:51,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 325 transitions, 940 flow [2022-09-16 11:50:51,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 325 transitions, 934 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:50:51,489 INFO L231 Difference]: Finished difference. Result has 270 places, 267 transitions, 574 flow [2022-09-16 11:50:51,490 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=574, PETRI_PLACES=270, PETRI_TRANSITIONS=267} [2022-09-16 11:50:51,492 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, -26 predicate places. [2022-09-16 11:50:51,492 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 267 transitions, 574 flow [2022-09-16 11:50:51,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 260.5) internal successors, (1042), 4 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:51,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:50:51,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:50:51,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:50:51,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-09-16 11:50:51,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:50:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash 350380091, now seen corresponding path program 1 times [2022-09-16 11:50:51,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:50:51,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424358468] [2022-09-16 11:50:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:51,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:50:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:51,602 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 11:50:51,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:50:51,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424358468] [2022-09-16 11:50:51,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424358468] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:50:51,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558333821] [2022-09-16 11:50:51,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:50:51,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:50:51,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:50:51,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:50:51,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:50:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:50:51,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:50:51,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:50:51,882 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 11:50:51,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:50:51,931 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 11:50:51,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558333821] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:50:51,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:50:51,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:50:51,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601305205] [2022-09-16 11:50:51,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:50:51,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:50:51,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:50:51,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:50:51,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:50:51,935 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 378 [2022-09-16 11:50:51,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 267 transitions, 574 flow. Second operand has 12 states, 12 states have (on average 261.6666666666667) internal successors, (3140), 12 states have internal predecessors, (3140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:50:51,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:50:51,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 378 [2022-09-16 11:50:51,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:10,524 INFO L130 PetriNetUnfolder]: 75616/104142 cut-off events. [2022-09-16 11:51:10,525 INFO L131 PetriNetUnfolder]: For 6041/6201 co-relation queries the response was YES. [2022-09-16 11:51:10,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211417 conditions, 104142 events. 75616/104142 cut-off events. For 6041/6201 co-relation queries the response was YES. Maximal size of possible extension queue 3114. Compared 771415 event pairs, 58575 based on Foata normal form. 3/36905 useless extension candidates. Maximal degree in co-relation 169052. Up to 20171 conditions per place. [2022-09-16 11:51:11,540 INFO L137 encePairwiseOnDemand]: 371/378 looper letters, 293 selfloop transitions, 18 changer transitions 0/510 dead transitions. [2022-09-16 11:51:11,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 510 transitions, 1768 flow [2022-09-16 11:51:11,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:51:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:51:11,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4976 transitions. [2022-09-16 11:51:11,551 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7313345091122869 [2022-09-16 11:51:11,552 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4976 transitions. [2022-09-16 11:51:11,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4976 transitions. [2022-09-16 11:51:11,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:11,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4976 transitions. [2022-09-16 11:51:11,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 276.44444444444446) internal successors, (4976), 18 states have internal predecessors, (4976), 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 11:51:11,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 378.0) internal successors, (7182), 19 states have internal predecessors, (7182), 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 11:51:11,577 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 378.0) internal successors, (7182), 19 states have internal predecessors, (7182), 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 11:51:11,577 INFO L175 Difference]: Start difference. First operand has 270 places, 267 transitions, 574 flow. Second operand 18 states and 4976 transitions. [2022-09-16 11:51:11,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 510 transitions, 1768 flow [2022-09-16 11:51:11,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 510 transitions, 1766 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:51:11,586 INFO L231 Difference]: Finished difference. Result has 290 places, 279 transitions, 678 flow [2022-09-16 11:51:11,586 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=678, PETRI_PLACES=290, PETRI_TRANSITIONS=279} [2022-09-16 11:51:11,587 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, -6 predicate places. [2022-09-16 11:51:11,587 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 279 transitions, 678 flow [2022-09-16 11:51:11,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 261.6666666666667) internal successors, (3140), 12 states have internal predecessors, (3140), 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 11:51:11,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:11,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:51:11,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 11:51:11,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:11,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-09-16 11:51:11,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:11,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2023117643, now seen corresponding path program 1 times [2022-09-16 11:51:11,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:11,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142761449] [2022-09-16 11:51:11,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:11,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:11,882 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 11:51:11,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:11,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142761449] [2022-09-16 11:51:11,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142761449] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:51:11,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731981149] [2022-09-16 11:51:11,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:11,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:11,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:51:11,884 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 11:51:11,885 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 11:51:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:12,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:51:12,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:51:12,091 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 11:51:12,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:51:12,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731981149] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:12,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:51:12,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:51:12,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749093652] [2022-09-16 11:51:12,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:12,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:51:12,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:12,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:51:12,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:51:12,095 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 378 [2022-09-16 11:51:12,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 279 transitions, 678 flow. Second operand has 6 states, 6 states have (on average 261.3333333333333) internal successors, (1568), 6 states have internal predecessors, (1568), 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 11:51:12,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:12,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 378 [2022-09-16 11:51:12,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:30,677 INFO L130 PetriNetUnfolder]: 75616/104138 cut-off events. [2022-09-16 11:51:30,677 INFO L131 PetriNetUnfolder]: For 6077/6237 co-relation queries the response was YES. [2022-09-16 11:51:31,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211435 conditions, 104138 events. 75616/104138 cut-off events. For 6077/6237 co-relation queries the response was YES. Maximal size of possible extension queue 3189. Compared 773466 event pairs, 58575 based on Foata normal form. 4/36902 useless extension candidates. Maximal degree in co-relation 169141. Up to 80668 conditions per place. [2022-09-16 11:51:31,736 INFO L137 encePairwiseOnDemand]: 373/378 looper letters, 123 selfloop transitions, 11 changer transitions 0/333 dead transitions. [2022-09-16 11:51:31,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 333 transitions, 1053 flow [2022-09-16 11:51:31,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:51:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:51:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1939 transitions. [2022-09-16 11:51:31,741 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7328042328042328 [2022-09-16 11:51:31,741 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1939 transitions. [2022-09-16 11:51:31,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1939 transitions. [2022-09-16 11:51:31,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:31,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1939 transitions. [2022-09-16 11:51:31,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 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 11:51:31,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 378.0) internal successors, (3024), 8 states have internal predecessors, (3024), 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 11:51:31,751 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 378.0) internal successors, (3024), 8 states have internal predecessors, (3024), 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 11:51:31,751 INFO L175 Difference]: Start difference. First operand has 290 places, 279 transitions, 678 flow. Second operand 7 states and 1939 transitions. [2022-09-16 11:51:31,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 333 transitions, 1053 flow [2022-09-16 11:51:31,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 333 transitions, 1021 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:51:31,759 INFO L231 Difference]: Finished difference. Result has 286 places, 275 transitions, 641 flow [2022-09-16 11:51:31,759 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=641, PETRI_PLACES=286, PETRI_TRANSITIONS=275} [2022-09-16 11:51:31,760 INFO L287 CegarLoopForPetriNet]: 296 programPoint places, -10 predicate places. [2022-09-16 11:51:31,760 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 275 transitions, 641 flow [2022-09-16 11:51:31,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 261.3333333333333) internal successors, (1568), 6 states have internal predecessors, (1568), 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 11:51:31,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:31,761 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] [2022-09-16 11:51:31,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:51:31,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:31,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 99 more)] === [2022-09-16 11:51:31,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:31,985 INFO L85 PathProgramCache]: Analyzing trace with hash 155749581, now seen corresponding path program 1 times [2022-09-16 11:51:31,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:31,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596739078] [2022-09-16 11:51:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:31,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:32,079 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 11:51:32,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:32,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596739078] [2022-09-16 11:51:32,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596739078] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:32,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:32,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:51:32,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676346031] [2022-09-16 11:51:32,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:32,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:51:32,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:32,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:51:32,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:51:32,083 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 378 [2022-09-16 11:51:32,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 275 transitions, 641 flow. Second operand has 4 states, 4 states have (on average 265.25) internal successors, (1061), 4 states have internal predecessors, (1061), 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 11:51:32,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:32,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 378 [2022-09-16 11:51:32,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand