/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/pthread-divine/ring_2w1r-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:39:05,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:39:05,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:39:05,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:39:05,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:39:05,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:39:05,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:39:05,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:39:05,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:39:05,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:39:05,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:39:05,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:39:05,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:39:05,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:39:05,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:39:05,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:39:05,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:39:05,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:39:05,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:39:05,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:39:06,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:39:06,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:39:06,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:39:06,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:39:06,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:39:06,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:39:06,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:39:06,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:39:06,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:39:06,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:39:06,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:39:06,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:39:06,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:39:06,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:39:06,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:39:06,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:39:06,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:39:06,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:39:06,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:39:06,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:39:06,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:39:06,016 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 11:39:06,052 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:39:06,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:39:06,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:39:06,053 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:39:06,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:39:06,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:39:06,054 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:39:06,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:39:06,054 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:39:06,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:39:06,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:39:06,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:39:06,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:39:06,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:39:06,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:39:06,055 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:39:06,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:39:06,055 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:39:06,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:39:06,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:39:06,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:39:06,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:39:06,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:39:06,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:39:06,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:39:06,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:39:06,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:39:06,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:39:06,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:39:06,056 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:39:06,056 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:39:06,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:39:06,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:39:06,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:39:06,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:39:06,291 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:39:06,291 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:39:06,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i [2022-09-16 11:39:06,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d812f26e/1f67440f5dd748ff94b930dfa2083703/FLAG57c647cbf [2022-09-16 11:39:06,781 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:39:06,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i [2022-09-16 11:39:06,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d812f26e/1f67440f5dd748ff94b930dfa2083703/FLAG57c647cbf [2022-09-16 11:39:06,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d812f26e/1f67440f5dd748ff94b930dfa2083703 [2022-09-16 11:39:06,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:39:06,812 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:39:06,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:39:06,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:39:06,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:39:06,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbf8232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:06, skipping insertion in model container [2022-09-16 11:39:06,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:39:06" (1/1) ... [2022-09-16 11:39:06,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:39:06,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:39:06,976 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-09-16 11:39:07,137 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[39095,39108] [2022-09-16 11:39:07,139 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[39180,39193] [2022-09-16 11:39:07,139 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[39232,39245] [2022-09-16 11:39:07,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49285,49298] [2022-09-16 11:39:07,175 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49334,49347] [2022-09-16 11:39:07,176 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49462,49475] [2022-09-16 11:39:07,177 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49520,49533] [2022-09-16 11:39:07,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:39:07,185 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:39:07,192 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-09-16 11:39:07,224 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[39095,39108] [2022-09-16 11:39:07,225 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[39180,39193] [2022-09-16 11:39:07,225 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[39232,39245] [2022-09-16 11:39:07,234 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49285,49298] [2022-09-16 11:39:07,234 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49334,49347] [2022-09-16 11:39:07,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49462,49475] [2022-09-16 11:39:07,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-2.i[49520,49533] [2022-09-16 11:39:07,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:39:07,277 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:39:07,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:07 WrapperNode [2022-09-16 11:39:07,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:39:07,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:39:07,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:39:07,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:39:07,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:07" (1/1) ... [2022-09-16 11:39:07,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:07" (1/1) ... [2022-09-16 11:39:07,341 INFO L138 Inliner]: procedures = 309, calls = 63, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 216 [2022-09-16 11:39:07,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:39:07,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:39:07,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:39:07,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:39:07,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:07" (1/1) ... [2022-09-16 11:39:07,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:07" (1/1) ... [2022-09-16 11:39:07,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:07" (1/1) ... [2022-09-16 11:39:07,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:07" (1/1) ... [2022-09-16 11:39:07,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:07" (1/1) ... [2022-09-16 11:39:07,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:07" (1/1) ... [2022-09-16 11:39:07,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:07" (1/1) ... [2022-09-16 11:39:07,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:39:07,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:39:07,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:39:07,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:39:07,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:07" (1/1) ... [2022-09-16 11:39:07,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:39:07,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:39:07,417 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 11:39:07,418 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 11:39:07,445 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-09-16 11:39:07,446 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-09-16 11:39:07,446 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-09-16 11:39:07,447 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-09-16 11:39:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:39:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:39:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:39:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:39:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:39:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:39:07,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:39:07,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:39:07,449 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 11:39:07,569 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:39:07,570 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:39:07,857 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:39:07,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:39:07,864 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-16 11:39:07,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:39:07 BoogieIcfgContainer [2022-09-16 11:39:07,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:39:07,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:39:07,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:39:07,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:39:07,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:39:06" (1/3) ... [2022-09-16 11:39:07,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64071706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:39:07, skipping insertion in model container [2022-09-16 11:39:07,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:39:07" (2/3) ... [2022-09-16 11:39:07,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64071706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:39:07, skipping insertion in model container [2022-09-16 11:39:07,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:39:07" (3/3) ... [2022-09-16 11:39:07,875 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-2.i [2022-09-16 11:39:07,887 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:39:07,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-09-16 11:39:07,888 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:39:07,986 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:39:08,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 268 transitions, 552 flow [2022-09-16 11:39:08,120 INFO L130 PetriNetUnfolder]: 17/266 cut-off events. [2022-09-16 11:39:08,120 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:39:08,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 266 events. 17/266 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 624 event pairs, 0 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 221. Up to 2 conditions per place. [2022-09-16 11:39:08,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 268 transitions, 552 flow [2022-09-16 11:39:08,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 255 transitions, 519 flow [2022-09-16 11:39:08,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:39:08,165 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;@5c390063, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:39:08,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-09-16 11:39:08,185 INFO L130 PetriNetUnfolder]: 1/63 cut-off events. [2022-09-16 11:39:08,185 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:39:08,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:08,186 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] [2022-09-16 11:39:08,186 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting writer_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-09-16 11:39:08,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:08,190 INFO L85 PathProgramCache]: Analyzing trace with hash 843996879, now seen corresponding path program 1 times [2022-09-16 11:39:08,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:08,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757103834] [2022-09-16 11:39:08,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:08,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:08,391 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 11:39:08,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:08,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757103834] [2022-09-16 11:39:08,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757103834] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:08,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:08,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:39:08,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599773819] [2022-09-16 11:39:08,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:08,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:39:08,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:08,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:39:08,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:39:08,433 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 268 [2022-09-16 11:39:08,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 255 transitions, 519 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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 11:39:08,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:08,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 268 [2022-09-16 11:39:08,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:08,564 INFO L130 PetriNetUnfolder]: 32/382 cut-off events. [2022-09-16 11:39:08,565 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-09-16 11:39:08,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 382 events. 32/382 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2050 event pairs, 7 based on Foata normal form. 85/406 useless extension candidates. Maximal degree in co-relation 431. Up to 45 conditions per place. [2022-09-16 11:39:08,572 INFO L137 encePairwiseOnDemand]: 251/268 looper letters, 24 selfloop transitions, 2 changer transitions 0/254 dead transitions. [2022-09-16 11:39:08,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 254 transitions, 572 flow [2022-09-16 11:39:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:39:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:39:08,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2022-09-16 11:39:08,588 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9589552238805971 [2022-09-16 11:39:08,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 771 transitions. [2022-09-16 11:39:08,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 771 transitions. [2022-09-16 11:39:08,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:08,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 771 transitions. [2022-09-16 11:39:08,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 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 11:39:08,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 11:39:08,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 11:39:08,605 INFO L175 Difference]: Start difference. First operand has 245 places, 255 transitions, 519 flow. Second operand 3 states and 771 transitions. [2022-09-16 11:39:08,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 254 transitions, 572 flow [2022-09-16 11:39:08,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 254 transitions, 565 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:39:08,615 INFO L231 Difference]: Finished difference. Result has 245 places, 246 transitions, 514 flow [2022-09-16 11:39:08,617 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=245, PETRI_TRANSITIONS=246} [2022-09-16 11:39:08,620 INFO L287 CegarLoopForPetriNet]: 245 programPoint places, 0 predicate places. [2022-09-16 11:39:08,620 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 246 transitions, 514 flow [2022-09-16 11:39:08,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 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 11:39:08,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:08,621 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] [2022-09-16 11:39:08,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:39:08,622 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-09-16 11:39:08,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:08,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1075510318, now seen corresponding path program 1 times [2022-09-16 11:39:08,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:08,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186863037] [2022-09-16 11:39:08,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:08,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:08,693 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 11:39:08,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:08,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186863037] [2022-09-16 11:39:08,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186863037] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:08,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:08,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:39:08,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143501409] [2022-09-16 11:39:08,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:08,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:39:08,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:08,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:39:08,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:39:08,697 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 268 [2022-09-16 11:39:08,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 246 transitions, 514 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 11:39:08,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:08,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 268 [2022-09-16 11:39:08,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:08,795 INFO L130 PetriNetUnfolder]: 9/315 cut-off events. [2022-09-16 11:39:08,796 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:39:08,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 315 events. 9/315 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 858 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 309. Up to 19 conditions per place. [2022-09-16 11:39:08,802 INFO L137 encePairwiseOnDemand]: 261/268 looper letters, 24 selfloop transitions, 2 changer transitions 0/254 dead transitions. [2022-09-16 11:39:08,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 254 transitions, 582 flow [2022-09-16 11:39:08,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:39:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:39:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 748 transitions. [2022-09-16 11:39:08,804 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9303482587064676 [2022-09-16 11:39:08,804 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 748 transitions. [2022-09-16 11:39:08,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 748 transitions. [2022-09-16 11:39:08,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:08,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 748 transitions. [2022-09-16 11:39:08,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 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 11:39:08,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 11:39:08,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 11:39:08,808 INFO L175 Difference]: Start difference. First operand has 245 places, 246 transitions, 514 flow. Second operand 3 states and 748 transitions. [2022-09-16 11:39:08,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 254 transitions, 582 flow [2022-09-16 11:39:08,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 254 transitions, 580 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:08,816 INFO L231 Difference]: Finished difference. Result has 247 places, 247 transitions, 532 flow [2022-09-16 11:39:08,817 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=532, PETRI_PLACES=247, PETRI_TRANSITIONS=247} [2022-09-16 11:39:08,817 INFO L287 CegarLoopForPetriNet]: 245 programPoint places, 2 predicate places. [2022-09-16 11:39:08,817 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 247 transitions, 532 flow [2022-09-16 11:39:08,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 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 11:39:08,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:08,818 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] [2022-09-16 11:39:08,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:39:08,819 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting writer_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-09-16 11:39:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:08,819 INFO L85 PathProgramCache]: Analyzing trace with hash -318950411, now seen corresponding path program 1 times [2022-09-16 11:39:08,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:08,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133150611] [2022-09-16 11:39:08,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:08,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:09,188 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 11:39:09,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:09,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133150611] [2022-09-16 11:39:09,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133150611] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:09,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:09,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-09-16 11:39:09,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870489107] [2022-09-16 11:39:09,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:09,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:39:09,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:09,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:39:09,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:39:09,194 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 268 [2022-09-16 11:39:09,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 247 transitions, 532 flow. Second operand has 17 states, 17 states have (on average 178.88235294117646) internal successors, (3041), 17 states have internal predecessors, (3041), 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 11:39:09,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:09,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 268 [2022-09-16 11:39:09,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:20,675 INFO L130 PetriNetUnfolder]: 28922/108207 cut-off events. [2022-09-16 11:39:20,675 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-09-16 11:39:20,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154743 conditions, 108207 events. 28922/108207 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 1568303 event pairs, 8252 based on Foata normal form. 0/92448 useless extension candidates. Maximal degree in co-relation 59473. Up to 30598 conditions per place. [2022-09-16 11:39:21,412 INFO L137 encePairwiseOnDemand]: 248/268 looper letters, 305 selfloop transitions, 56 changer transitions 0/534 dead transitions. [2022-09-16 11:39:21,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 534 transitions, 1835 flow [2022-09-16 11:39:21,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:39:21,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 11:39:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4617 transitions. [2022-09-16 11:39:21,426 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7178171641791045 [2022-09-16 11:39:21,426 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4617 transitions. [2022-09-16 11:39:21,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4617 transitions. [2022-09-16 11:39:21,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:21,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4617 transitions. [2022-09-16 11:39:21,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 192.375) internal successors, (4617), 24 states have internal predecessors, (4617), 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 11:39:21,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 268.0) internal successors, (6700), 25 states have internal predecessors, (6700), 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 11:39:21,447 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 268.0) internal successors, (6700), 25 states have internal predecessors, (6700), 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 11:39:21,447 INFO L175 Difference]: Start difference. First operand has 247 places, 247 transitions, 532 flow. Second operand 24 states and 4617 transitions. [2022-09-16 11:39:21,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 534 transitions, 1835 flow [2022-09-16 11:39:21,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 534 transitions, 1833 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:39:21,471 INFO L231 Difference]: Finished difference. Result has 285 places, 302 transitions, 897 flow [2022-09-16 11:39:21,471 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=897, PETRI_PLACES=285, PETRI_TRANSITIONS=302} [2022-09-16 11:39:21,473 INFO L287 CegarLoopForPetriNet]: 245 programPoint places, 40 predicate places. [2022-09-16 11:39:21,473 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 302 transitions, 897 flow [2022-09-16 11:39:21,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 178.88235294117646) internal successors, (3041), 17 states have internal predecessors, (3041), 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 11:39:21,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:21,475 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] [2022-09-16 11:39:21,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:39:21,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-09-16 11:39:21,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:21,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1668780055, now seen corresponding path program 1 times [2022-09-16 11:39:21,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:21,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331620435] [2022-09-16 11:39:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:21,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:21,747 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 11:39:21,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:21,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331620435] [2022-09-16 11:39:21,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331620435] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:21,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:21,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-09-16 11:39:21,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488299695] [2022-09-16 11:39:21,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:21,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-16 11:39:21,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:21,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-16 11:39:21,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:39:21,751 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 268 [2022-09-16 11:39:21,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 302 transitions, 897 flow. Second operand has 17 states, 17 states have (on average 178.0) internal successors, (3026), 17 states have internal predecessors, (3026), 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 11:39:21,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:21,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 268 [2022-09-16 11:39:21,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:39:39,007 INFO L130 PetriNetUnfolder]: 36578/146552 cut-off events. [2022-09-16 11:39:39,007 INFO L131 PetriNetUnfolder]: For 25200/25444 co-relation queries the response was YES. [2022-09-16 11:39:40,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228652 conditions, 146552 events. 36578/146552 cut-off events. For 25200/25444 co-relation queries the response was YES. Maximal size of possible extension queue 2079. Compared 2241078 event pairs, 10677 based on Foata normal form. 221/125392 useless extension candidates. Maximal degree in co-relation 228545. Up to 40378 conditions per place. [2022-09-16 11:39:40,668 INFO L137 encePairwiseOnDemand]: 248/268 looper letters, 303 selfloop transitions, 142 changer transitions 0/635 dead transitions. [2022-09-16 11:39:40,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 635 transitions, 2835 flow [2022-09-16 11:39:40,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:39:40,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 11:39:40,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4589 transitions. [2022-09-16 11:39:40,675 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7134639303482587 [2022-09-16 11:39:40,675 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4589 transitions. [2022-09-16 11:39:40,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4589 transitions. [2022-09-16 11:39:40,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:39:40,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4589 transitions. [2022-09-16 11:39:40,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 191.20833333333334) internal successors, (4589), 24 states have internal predecessors, (4589), 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 11:39:40,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 268.0) internal successors, (6700), 25 states have internal predecessors, (6700), 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 11:39:40,692 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 268.0) internal successors, (6700), 25 states have internal predecessors, (6700), 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 11:39:40,692 INFO L175 Difference]: Start difference. First operand has 285 places, 302 transitions, 897 flow. Second operand 24 states and 4589 transitions. [2022-09-16 11:39:40,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 635 transitions, 2835 flow [2022-09-16 11:39:41,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 635 transitions, 2826 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:39:41,666 INFO L231 Difference]: Finished difference. Result has 319 places, 410 transitions, 1940 flow [2022-09-16 11:39:41,666 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=888, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1940, PETRI_PLACES=319, PETRI_TRANSITIONS=410} [2022-09-16 11:39:41,667 INFO L287 CegarLoopForPetriNet]: 245 programPoint places, 74 predicate places. [2022-09-16 11:39:41,667 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 410 transitions, 1940 flow [2022-09-16 11:39:41,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 178.0) internal successors, (3026), 17 states have internal predecessors, (3026), 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 11:39:41,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:39:41,668 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] [2022-09-16 11:39:41,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:39:41,668 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting writer_fnErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-09-16 11:39:41,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:39:41,668 INFO L85 PathProgramCache]: Analyzing trace with hash 876089777, now seen corresponding path program 1 times [2022-09-16 11:39:41,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:39:41,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392572335] [2022-09-16 11:39:41,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:39:41,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:39:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:39:41,784 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 11:39:41,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:39:41,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392572335] [2022-09-16 11:39:41,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392572335] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:39:41,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:39:41,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:39:41,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747449755] [2022-09-16 11:39:41,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:39:41,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:39:41,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:39:41,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:39:41,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:39:41,789 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 268 [2022-09-16 11:39:41,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 410 transitions, 1940 flow. Second operand has 11 states, 11 states have (on average 181.0909090909091) internal successors, (1992), 11 states have internal predecessors, (1992), 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 11:39:41,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:39:41,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 268 [2022-09-16 11:39:41,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand