./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 10:19:41,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 10:19:41,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 10:19:41,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 10:19:41,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 10:19:41,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 10:19:41,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 10:19:41,802 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 10:19:41,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 10:19:41,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 10:19:41,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 10:19:41,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 10:19:41,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 10:19:41,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 10:19:41,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 10:19:41,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 10:19:41,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 10:19:41,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 10:19:41,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 10:19:41,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 10:19:41,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 10:19:41,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 10:19:41,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 10:19:41,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 10:19:41,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 10:19:41,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 10:19:41,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 10:19:41,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 10:19:41,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 10:19:41,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 10:19:41,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 10:19:41,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 10:19:41,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 10:19:41,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 10:19:41,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 10:19:41,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 10:19:41,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 10:19:41,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 10:19:41,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 10:19:41,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 10:19:41,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 10:19:41,861 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 10:19:41,891 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 10:19:41,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 10:19:41,893 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 10:19:41,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 10:19:41,894 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 10:19:41,894 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 10:19:41,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 10:19:41,895 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 10:19:41,895 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 10:19:41,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 10:19:41,896 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 10:19:41,896 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 10:19:41,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 10:19:41,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 10:19:41,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 10:19:41,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 10:19:41,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 10:19:41,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 10:19:41,897 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 10:19:41,898 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 10:19:41,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 10:19:41,898 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 10:19:41,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 10:19:41,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 10:19:41,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 10:19:41,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 10:19:41,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:19:41,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 10:19:41,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 10:19:41,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 10:19:41,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 10:19:41,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 10:19:41,900 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 10:19:41,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 10:19:41,900 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 10:19:41,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 10:19:41,901 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 10:19:41,901 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c0354ee6107efc04d15102ecf9eef73430e38e14b70f16419cd07cd733fd0df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 10:19:42,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 10:19:42,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 10:19:42,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 10:19:42,223 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 10:19:42,223 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 10:19:42,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-08-30 10:19:43,481 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 10:19:43,756 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 10:19:43,756 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i [2023-08-30 10:19:43,776 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770948ee1/49426333127e4ca38aef3156c00adab3/FLAG591d24d1d [2023-08-30 10:19:43,797 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770948ee1/49426333127e4ca38aef3156c00adab3 [2023-08-30 10:19:43,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 10:19:43,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 10:19:43,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 10:19:43,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 10:19:43,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 10:19:43,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:19:43" (1/1) ... [2023-08-30 10:19:43,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1deda2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:43, skipping insertion in model container [2023-08-30 10:19:43,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:19:43" (1/1) ... [2023-08-30 10:19:43,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 10:19:43,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 10:19:44,330 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2023-08-30 10:19:44,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:19:44,383 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 10:19:44,420 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_75-tricky_address2_racefree.i[41323,41336] [2023-08-30 10:19:44,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 10:19:44,526 INFO L208 MainTranslator]: Completed translation [2023-08-30 10:19:44,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:44 WrapperNode [2023-08-30 10:19:44,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 10:19:44,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 10:19:44,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 10:19:44,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 10:19:44,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:44" (1/1) ... [2023-08-30 10:19:44,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:44" (1/1) ... [2023-08-30 10:19:44,587 INFO L138 Inliner]: procedures = 270, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 204 [2023-08-30 10:19:44,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 10:19:44,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 10:19:44,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 10:19:44,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 10:19:44,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:44" (1/1) ... [2023-08-30 10:19:44,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:44" (1/1) ... [2023-08-30 10:19:44,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:44" (1/1) ... [2023-08-30 10:19:44,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:44" (1/1) ... [2023-08-30 10:19:44,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:44" (1/1) ... [2023-08-30 10:19:44,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:44" (1/1) ... [2023-08-30 10:19:44,613 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:44" (1/1) ... [2023-08-30 10:19:44,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:44" (1/1) ... [2023-08-30 10:19:44,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 10:19:44,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 10:19:44,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 10:19:44,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 10:19:44,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:44" (1/1) ... [2023-08-30 10:19:44,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 10:19:44,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:19:44,645 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) [2023-08-30 10:19:44,660 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 [2023-08-30 10:19:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 10:19:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 10:19:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 10:19:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 10:19:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 10:19:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 10:19:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 10:19:44,679 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 10:19:44,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 10:19:44,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 10:19:44,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 10:19:44,681 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 10:19:44,807 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 10:19:44,809 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 10:19:45,169 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 10:19:45,179 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 10:19:45,179 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-30 10:19:45,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:19:45 BoogieIcfgContainer [2023-08-30 10:19:45,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 10:19:45,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 10:19:45,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 10:19:45,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 10:19:45,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:19:43" (1/3) ... [2023-08-30 10:19:45,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ebb3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:19:45, skipping insertion in model container [2023-08-30 10:19:45,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:19:44" (2/3) ... [2023-08-30 10:19:45,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ebb3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:19:45, skipping insertion in model container [2023-08-30 10:19:45,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:19:45" (3/3) ... [2023-08-30 10:19:45,188 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_75-tricky_address2_racefree.i [2023-08-30 10:19:45,195 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 10:19:45,203 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 10:19:45,203 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 10:19:45,204 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 10:19:45,266 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 10:19:45,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 216 transitions, 440 flow [2023-08-30 10:19:45,395 INFO L130 PetriNetUnfolder]: 45/293 cut-off events. [2023-08-30 10:19:45,396 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 10:19:45,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 293 events. 45/293 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 998 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-08-30 10:19:45,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 216 transitions, 440 flow [2023-08-30 10:19:45,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 186 places, 213 transitions, 434 flow [2023-08-30 10:19:45,419 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:19:45,426 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 186 places, 213 transitions, 434 flow [2023-08-30 10:19:45,428 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 186 places, 213 transitions, 434 flow [2023-08-30 10:19:45,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 213 transitions, 434 flow [2023-08-30 10:19:45,471 INFO L130 PetriNetUnfolder]: 44/290 cut-off events. [2023-08-30 10:19:45,472 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 10:19:45,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 290 events. 44/290 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 988 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-08-30 10:19:45,480 INFO L119 LiptonReduction]: Number of co-enabled transitions 13050 [2023-08-30 10:19:48,519 INFO L134 LiptonReduction]: Checked pairs total: 22816 [2023-08-30 10:19:48,520 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-08-30 10:19:48,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:19:48,538 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=true, 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;@593067fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:19:48,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 10:19:48,540 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 10:19:48,540 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:19:48,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:48,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:19:48,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:19:48,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash 27119, now seen corresponding path program 1 times [2023-08-30 10:19:48,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:48,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726039977] [2023-08-30 10:19:48,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:48,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:19:48,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:48,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726039977] [2023-08-30 10:19:48,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726039977] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:48,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:48,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:19:48,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358595174] [2023-08-30 10:19:48,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:48,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:19:48,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:48,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:19:48,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:19:48,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 407 [2023-08-30 10:19:48,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 79 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 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) [2023-08-30 10:19:48,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:48,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 407 [2023-08-30 10:19:48,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:48,960 INFO L130 PetriNetUnfolder]: 454/971 cut-off events. [2023-08-30 10:19:48,961 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:19:48,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 971 events. 454/971 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5409 event pairs, 414 based on Foata normal form. 131/816 useless extension candidates. Maximal degree in co-relation 1806. Up to 898 conditions per place. [2023-08-30 10:19:48,967 INFO L137 encePairwiseOnDemand]: 380/407 looper letters, 48 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-30 10:19:48,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 222 flow [2023-08-30 10:19:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:19:48,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:19:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-30 10:19:48,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506961506961507 [2023-08-30 10:19:48,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-30 10:19:48,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-30 10:19:48,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:48,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-30 10:19:48,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 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) [2023-08-30 10:19:48,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-08-30 10:19:48,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-08-30 10:19:48,997 INFO L175 Difference]: Start difference. First operand has 58 places, 79 transitions, 166 flow. Second operand 3 states and 619 transitions. [2023-08-30 10:19:48,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 222 flow [2023-08-30 10:19:49,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:19:49,002 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 134 flow [2023-08-30 10:19:49,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2023-08-30 10:19:49,006 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-08-30 10:19:49,007 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 134 flow [2023-08-30 10:19:49,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.66666666666666) internal successors, (545), 3 states have internal predecessors, (545), 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) [2023-08-30 10:19:49,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:49,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:19:49,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 10:19:49,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:19:49,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:49,009 INFO L85 PathProgramCache]: Analyzing trace with hash 842574, now seen corresponding path program 1 times [2023-08-30 10:19:49,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:49,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532828201] [2023-08-30 10:19:49,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:49,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:19:49,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:49,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532828201] [2023-08-30 10:19:49,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532828201] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:19:49,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407663705] [2023-08-30 10:19:49,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:49,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:49,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:19:49,121 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) [2023-08-30 10:19:49,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 10:19:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:49,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:19:49,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:19:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:19:49,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:19:49,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407663705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:49,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:19:49,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 10:19:49,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860246858] [2023-08-30 10:19:49,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:49,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:19:49,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:49,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:19:49,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:19:49,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 407 [2023-08-30 10:19:49,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 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) [2023-08-30 10:19:49,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:49,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 407 [2023-08-30 10:19:49,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:49,438 INFO L130 PetriNetUnfolder]: 454/970 cut-off events. [2023-08-30 10:19:49,439 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:19:49,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1882 conditions, 970 events. 454/970 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5406 event pairs, 414 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 1870. Up to 896 conditions per place. [2023-08-30 10:19:49,444 INFO L137 encePairwiseOnDemand]: 404/407 looper letters, 47 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-30 10:19:49,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 228 flow [2023-08-30 10:19:49,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:19:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:19:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 774 transitions. [2023-08-30 10:19:49,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47542997542997545 [2023-08-30 10:19:49,447 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 774 transitions. [2023-08-30 10:19:49,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 774 transitions. [2023-08-30 10:19:49,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:49,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 774 transitions. [2023-08-30 10:19:49,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 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) [2023-08-30 10:19:49,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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) [2023-08-30 10:19:49,454 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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) [2023-08-30 10:19:49,454 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 134 flow. Second operand 4 states and 774 transitions. [2023-08-30 10:19:49,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 228 flow [2023-08-30 10:19:49,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 224 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:19:49,456 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 130 flow [2023-08-30 10:19:49,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 10:19:49,457 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-08-30 10:19:49,458 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 130 flow [2023-08-30 10:19:49,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 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) [2023-08-30 10:19:49,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:49,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 10:19:49,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 10:19:49,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:49,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:19:49,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash -666401115, now seen corresponding path program 1 times [2023-08-30 10:19:49,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:49,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53428608] [2023-08-30 10:19:49,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:49,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:19:49,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:49,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53428608] [2023-08-30 10:19:49,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53428608] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:19:49,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071986934] [2023-08-30 10:19:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:49,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:49,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:19:49,762 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) [2023-08-30 10:19:49,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 10:19:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:49,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:19:49,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:19:49,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:19:49,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:19:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:19:49,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071986934] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:19:49,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:19:49,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:19:49,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333322534] [2023-08-30 10:19:49,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:19:49,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:19:49,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:49,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:19:49,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:19:49,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 407 [2023-08-30 10:19:49,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 130 flow. Second operand has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 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) [2023-08-30 10:19:49,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:49,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 407 [2023-08-30 10:19:49,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:50,089 INFO L130 PetriNetUnfolder]: 454/973 cut-off events. [2023-08-30 10:19:50,089 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 10:19:50,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1891 conditions, 973 events. 454/973 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5410 event pairs, 414 based on Foata normal form. 0/688 useless extension candidates. Maximal degree in co-relation 1879. Up to 897 conditions per place. [2023-08-30 10:19:50,093 INFO L137 encePairwiseOnDemand]: 404/407 looper letters, 47 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-08-30 10:19:50,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 59 transitions, 246 flow [2023-08-30 10:19:50,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:19:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:19:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1135 transitions. [2023-08-30 10:19:50,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46478296478296477 [2023-08-30 10:19:50,097 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1135 transitions. [2023-08-30 10:19:50,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1135 transitions. [2023-08-30 10:19:50,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:50,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1135 transitions. [2023-08-30 10:19:50,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 189.16666666666666) internal successors, (1135), 6 states have internal predecessors, (1135), 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) [2023-08-30 10:19:50,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 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) [2023-08-30 10:19:50,105 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 407.0) internal successors, (2849), 7 states have internal predecessors, (2849), 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) [2023-08-30 10:19:50,105 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 130 flow. Second operand 6 states and 1135 transitions. [2023-08-30 10:19:50,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 59 transitions, 246 flow [2023-08-30 10:19:50,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:19:50,108 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 163 flow [2023-08-30 10:19:50,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=163, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2023-08-30 10:19:50,109 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-08-30 10:19:50,109 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 163 flow [2023-08-30 10:19:50,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 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) [2023-08-30 10:19:50,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:50,110 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 10:19:50,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 10:19:50,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 10:19:50,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:19:50,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:50,317 INFO L85 PathProgramCache]: Analyzing trace with hash -708808540, now seen corresponding path program 2 times [2023-08-30 10:19:50,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:50,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541769522] [2023-08-30 10:19:50,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:50,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:50,399 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:19:50,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:50,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541769522] [2023-08-30 10:19:50,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541769522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:50,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:50,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:19:50,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887643989] [2023-08-30 10:19:50,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:50,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:19:50,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:50,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:19:50,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:19:50,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 407 [2023-08-30 10:19:50,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 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) [2023-08-30 10:19:50,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:50,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 407 [2023-08-30 10:19:50,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:50,557 INFO L130 PetriNetUnfolder]: 399/886 cut-off events. [2023-08-30 10:19:50,557 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 10:19:50,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1742 conditions, 886 events. 399/886 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5295 event pairs, 0 based on Foata normal form. 0/659 useless extension candidates. Maximal degree in co-relation 1726. Up to 787 conditions per place. [2023-08-30 10:19:50,562 INFO L137 encePairwiseOnDemand]: 402/407 looper letters, 67 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-30 10:19:50,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 76 transitions, 335 flow [2023-08-30 10:19:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:19:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:19:50,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 10:19:50,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004095004095004 [2023-08-30 10:19:50,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 10:19:50,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 10:19:50,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:50,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 10:19:50,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 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) [2023-08-30 10:19:50,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-08-30 10:19:50,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-08-30 10:19:50,570 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 163 flow. Second operand 3 states and 611 transitions. [2023-08-30 10:19:50,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 76 transitions, 335 flow [2023-08-30 10:19:50,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 321 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:19:50,575 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 153 flow [2023-08-30 10:19:50,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-08-30 10:19:50,577 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2023-08-30 10:19:50,577 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 153 flow [2023-08-30 10:19:50,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 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) [2023-08-30 10:19:50,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:50,578 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:50,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 10:19:50,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:19:50,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:50,579 INFO L85 PathProgramCache]: Analyzing trace with hash 740072570, now seen corresponding path program 1 times [2023-08-30 10:19:50,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:50,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572500695] [2023-08-30 10:19:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:50,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:19:50,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:50,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572500695] [2023-08-30 10:19:50,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572500695] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:19:50,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124282637] [2023-08-30 10:19:50,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:50,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:50,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:19:50,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:19:50,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 10:19:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:50,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:19:50,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:19:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:19:50,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:19:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:19:50,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124282637] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:19:50,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:19:50,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:19:50,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585875937] [2023-08-30 10:19:50,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:19:50,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:19:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:50,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:19:50,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:19:50,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 407 [2023-08-30 10:19:50,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 153 flow. Second operand has 13 states, 13 states have (on average 181.46153846153845) internal successors, (2359), 13 states have internal predecessors, (2359), 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) [2023-08-30 10:19:50,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:50,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 407 [2023-08-30 10:19:50,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:51,025 INFO L130 PetriNetUnfolder]: 418/876 cut-off events. [2023-08-30 10:19:51,026 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-30 10:19:51,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 876 events. 418/876 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4691 event pairs, 378 based on Foata normal form. 6/670 useless extension candidates. Maximal degree in co-relation 1769. Up to 804 conditions per place. [2023-08-30 10:19:51,031 INFO L137 encePairwiseOnDemand]: 404/407 looper letters, 45 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2023-08-30 10:19:51,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 63 transitions, 301 flow [2023-08-30 10:19:51,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:19:51,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:19:51,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2222 transitions. [2023-08-30 10:19:51,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2023-08-30 10:19:51,036 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2222 transitions. [2023-08-30 10:19:51,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2222 transitions. [2023-08-30 10:19:51,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:51,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2222 transitions. [2023-08-30 10:19:51,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 185.16666666666666) internal successors, (2222), 12 states have internal predecessors, (2222), 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) [2023-08-30 10:19:51,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 407.0) internal successors, (5291), 13 states have internal predecessors, (5291), 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) [2023-08-30 10:19:51,051 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 407.0) internal successors, (5291), 13 states have internal predecessors, (5291), 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) [2023-08-30 10:19:51,052 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 153 flow. Second operand 12 states and 2222 transitions. [2023-08-30 10:19:51,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 63 transitions, 301 flow [2023-08-30 10:19:51,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 63 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:19:51,056 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 233 flow [2023-08-30 10:19:51,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=233, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2023-08-30 10:19:51,060 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-08-30 10:19:51,060 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 233 flow [2023-08-30 10:19:51,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 181.46153846153845) internal successors, (2359), 13 states have internal predecessors, (2359), 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) [2023-08-30 10:19:51,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:51,061 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:51,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 10:19:51,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:51,267 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:19:51,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:51,268 INFO L85 PathProgramCache]: Analyzing trace with hash 12516570, now seen corresponding path program 2 times [2023-08-30 10:19:51,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:51,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609623887] [2023-08-30 10:19:51,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:51,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:51,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:51,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609623887] [2023-08-30 10:19:51,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609623887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:51,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:51,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:19:51,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353872233] [2023-08-30 10:19:51,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:51,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:19:51,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:51,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:19:51,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:19:51,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 407 [2023-08-30 10:19:51,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 233 flow. Second operand has 6 states, 6 states have (on average 174.33333333333334) internal successors, (1046), 6 states have internal predecessors, (1046), 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) [2023-08-30 10:19:51,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:51,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 407 [2023-08-30 10:19:51,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:51,809 INFO L130 PetriNetUnfolder]: 402/901 cut-off events. [2023-08-30 10:19:51,809 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-30 10:19:51,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1856 conditions, 901 events. 402/901 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5013 event pairs, 178 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 1831. Up to 579 conditions per place. [2023-08-30 10:19:51,814 INFO L137 encePairwiseOnDemand]: 397/407 looper letters, 88 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2023-08-30 10:19:51,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 101 transitions, 506 flow [2023-08-30 10:19:51,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:19:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:19:51,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 953 transitions. [2023-08-30 10:19:51,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683046683046683 [2023-08-30 10:19:51,820 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 953 transitions. [2023-08-30 10:19:51,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 953 transitions. [2023-08-30 10:19:51,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:51,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 953 transitions. [2023-08-30 10:19:51,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 190.6) internal successors, (953), 5 states have internal predecessors, (953), 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) [2023-08-30 10:19:51,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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) [2023-08-30 10:19:51,826 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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) [2023-08-30 10:19:51,826 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 233 flow. Second operand 5 states and 953 transitions. [2023-08-30 10:19:51,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 101 transitions, 506 flow [2023-08-30 10:19:51,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 101 transitions, 458 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 10:19:51,832 INFO L231 Difference]: Finished difference. Result has 83 places, 67 transitions, 231 flow [2023-08-30 10:19:51,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=83, PETRI_TRANSITIONS=67} [2023-08-30 10:19:51,834 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2023-08-30 10:19:51,835 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 67 transitions, 231 flow [2023-08-30 10:19:51,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.33333333333334) internal successors, (1046), 6 states have internal predecessors, (1046), 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) [2023-08-30 10:19:51,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:51,835 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:51,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 10:19:51,836 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:19:51,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1540622577, now seen corresponding path program 1 times [2023-08-30 10:19:51,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:51,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819383649] [2023-08-30 10:19:51,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:51,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:52,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:52,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819383649] [2023-08-30 10:19:52,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819383649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:52,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:52,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:19:52,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312794815] [2023-08-30 10:19:52,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:52,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:19:52,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:52,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:19:52,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:19:52,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 407 [2023-08-30 10:19:52,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 67 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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) [2023-08-30 10:19:52,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:52,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 407 [2023-08-30 10:19:52,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:52,213 INFO L130 PetriNetUnfolder]: 401/959 cut-off events. [2023-08-30 10:19:52,213 INFO L131 PetriNetUnfolder]: For 217/218 co-relation queries the response was YES. [2023-08-30 10:19:52,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 959 events. 401/959 cut-off events. For 217/218 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5579 event pairs, 179 based on Foata normal form. 1/820 useless extension candidates. Maximal degree in co-relation 2077. Up to 531 conditions per place. [2023-08-30 10:19:52,218 INFO L137 encePairwiseOnDemand]: 398/407 looper letters, 79 selfloop transitions, 11 changer transitions 0/97 dead transitions. [2023-08-30 10:19:52,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 97 transitions, 483 flow [2023-08-30 10:19:52,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:19:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:19:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2023-08-30 10:19:52,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49795249795249796 [2023-08-30 10:19:52,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2023-08-30 10:19:52,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2023-08-30 10:19:52,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:52,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2023-08-30 10:19:52,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 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) [2023-08-30 10:19:52,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-08-30 10:19:52,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 407.0) internal successors, (1628), 4 states have internal predecessors, (1628), 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) [2023-08-30 10:19:52,225 INFO L175 Difference]: Start difference. First operand has 83 places, 67 transitions, 231 flow. Second operand 3 states and 608 transitions. [2023-08-30 10:19:52,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 97 transitions, 483 flow [2023-08-30 10:19:52,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 97 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:19:52,230 INFO L231 Difference]: Finished difference. Result has 86 places, 71 transitions, 293 flow [2023-08-30 10:19:52,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2023-08-30 10:19:52,231 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2023-08-30 10:19:52,231 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 293 flow [2023-08-30 10:19:52,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 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) [2023-08-30 10:19:52,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:52,232 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:52,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 10:19:52,232 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:19:52,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:52,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1540622512, now seen corresponding path program 1 times [2023-08-30 10:19:52,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:52,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385934074] [2023-08-30 10:19:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:52,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:52,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:52,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385934074] [2023-08-30 10:19:52,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385934074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:52,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:52,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:19:52,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868874430] [2023-08-30 10:19:52,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:52,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:19:52,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:52,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:19:52,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:19:52,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 407 [2023-08-30 10:19:52,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 293 flow. Second operand has 8 states, 8 states have (on average 170.5) internal successors, (1364), 8 states have internal predecessors, (1364), 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) [2023-08-30 10:19:52,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:52,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 407 [2023-08-30 10:19:52,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:53,083 INFO L130 PetriNetUnfolder]: 441/1047 cut-off events. [2023-08-30 10:19:53,083 INFO L131 PetriNetUnfolder]: For 643/643 co-relation queries the response was YES. [2023-08-30 10:19:53,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 1047 events. 441/1047 cut-off events. For 643/643 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6160 event pairs, 133 based on Foata normal form. 22/958 useless extension candidates. Maximal degree in co-relation 2530. Up to 494 conditions per place. [2023-08-30 10:19:53,089 INFO L137 encePairwiseOnDemand]: 394/407 looper letters, 145 selfloop transitions, 21 changer transitions 3/176 dead transitions. [2023-08-30 10:19:53,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 176 transitions, 923 flow [2023-08-30 10:19:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:19:53,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:19:53,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1675 transitions. [2023-08-30 10:19:53,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45727545727545726 [2023-08-30 10:19:53,094 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1675 transitions. [2023-08-30 10:19:53,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1675 transitions. [2023-08-30 10:19:53,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:53,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1675 transitions. [2023-08-30 10:19:53,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 186.11111111111111) internal successors, (1675), 9 states have internal predecessors, (1675), 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) [2023-08-30 10:19:53,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 407.0) internal successors, (4070), 10 states have internal predecessors, (4070), 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) [2023-08-30 10:19:53,104 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 407.0) internal successors, (4070), 10 states have internal predecessors, (4070), 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) [2023-08-30 10:19:53,104 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 293 flow. Second operand 9 states and 1675 transitions. [2023-08-30 10:19:53,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 176 transitions, 923 flow [2023-08-30 10:19:53,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 176 transitions, 881 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 10:19:53,110 INFO L231 Difference]: Finished difference. Result has 96 places, 83 transitions, 405 flow [2023-08-30 10:19:53,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=405, PETRI_PLACES=96, PETRI_TRANSITIONS=83} [2023-08-30 10:19:53,111 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 38 predicate places. [2023-08-30 10:19:53,111 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 83 transitions, 405 flow [2023-08-30 10:19:53,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 170.5) internal successors, (1364), 8 states have internal predecessors, (1364), 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) [2023-08-30 10:19:53,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:53,112 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:53,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 10:19:53,113 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:19:53,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:53,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1936443344, now seen corresponding path program 1 times [2023-08-30 10:19:53,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:53,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732166172] [2023-08-30 10:19:53,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:53,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:53,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:53,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732166172] [2023-08-30 10:19:53,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732166172] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:19:53,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256492192] [2023-08-30 10:19:53,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:53,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:53,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:19:53,189 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:19:53,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 10:19:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:53,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:19:53,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:19:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:53,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:19:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:53,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256492192] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:19:53,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:19:53,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 10:19:53,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228556339] [2023-08-30 10:19:53,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:19:53,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:19:53,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:53,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:19:53,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:19:53,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 407 [2023-08-30 10:19:53,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 83 transitions, 405 flow. Second operand has 7 states, 7 states have (on average 183.14285714285714) internal successors, (1282), 7 states have internal predecessors, (1282), 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) [2023-08-30 10:19:53,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:53,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 407 [2023-08-30 10:19:53,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:53,401 INFO L130 PetriNetUnfolder]: 21/89 cut-off events. [2023-08-30 10:19:53,401 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-08-30 10:19:53,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 89 events. 21/89 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 233 event pairs, 0 based on Foata normal form. 16/103 useless extension candidates. Maximal degree in co-relation 273. Up to 48 conditions per place. [2023-08-30 10:19:53,402 INFO L137 encePairwiseOnDemand]: 404/407 looper letters, 31 selfloop transitions, 2 changer transitions 19/55 dead transitions. [2023-08-30 10:19:53,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 55 transitions, 358 flow [2023-08-30 10:19:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:19:53,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:19:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 758 transitions. [2023-08-30 10:19:53,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656019656019656 [2023-08-30 10:19:53,405 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 758 transitions. [2023-08-30 10:19:53,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 758 transitions. [2023-08-30 10:19:53,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:53,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 758 transitions. [2023-08-30 10:19:53,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 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) [2023-08-30 10:19:53,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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) [2023-08-30 10:19:53,410 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 407.0) internal successors, (2035), 5 states have internal predecessors, (2035), 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) [2023-08-30 10:19:53,410 INFO L175 Difference]: Start difference. First operand has 96 places, 83 transitions, 405 flow. Second operand 4 states and 758 transitions. [2023-08-30 10:19:53,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 55 transitions, 358 flow [2023-08-30 10:19:53,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 313 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-08-30 10:19:53,413 INFO L231 Difference]: Finished difference. Result has 59 places, 30 transitions, 143 flow [2023-08-30 10:19:53,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=59, PETRI_TRANSITIONS=30} [2023-08-30 10:19:53,414 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-08-30 10:19:53,414 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 30 transitions, 143 flow [2023-08-30 10:19:53,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 183.14285714285714) internal successors, (1282), 7 states have internal predecessors, (1282), 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) [2023-08-30 10:19:53,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:53,415 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:53,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 10:19:53,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:53,621 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:19:53,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:53,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1225396951, now seen corresponding path program 1 times [2023-08-30 10:19:53,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:53,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348699093] [2023-08-30 10:19:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:53,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:53,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:53,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348699093] [2023-08-30 10:19:53,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348699093] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:19:53,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201440240] [2023-08-30 10:19:53,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:53,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:19:53,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:19:53,974 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:19:53,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 10:19:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:54,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:19:54,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:19:54,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:19:54,182 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:19:54,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:19:54,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:19:54,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:19:54,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 10:19:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:54,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:19:54,404 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_322) |c_~#a~0.base|) (+ |c_~#a~0.offset| (* |c_t_funThread1of1ForFork0_~i~0#1| 28))) 2147483648))) is different from false [2023-08-30 10:19:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:19:57,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201440240] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:19:57,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:19:57,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 16 [2023-08-30 10:19:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157268826] [2023-08-30 10:19:57,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:19:57,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 10:19:57,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:57,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 10:19:57,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=4, NotChecked=30, Total=306 [2023-08-30 10:19:57,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 407 [2023-08-30 10:19:57,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 30 transitions, 143 flow. Second operand has 18 states, 18 states have (on average 145.22222222222223) internal successors, (2614), 18 states have internal predecessors, (2614), 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) [2023-08-30 10:19:57,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:57,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 407 [2023-08-30 10:19:57,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:57,701 INFO L130 PetriNetUnfolder]: 9/47 cut-off events. [2023-08-30 10:19:57,701 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2023-08-30 10:19:57,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 47 events. 9/47 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 2 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 141. Up to 12 conditions per place. [2023-08-30 10:19:57,702 INFO L137 encePairwiseOnDemand]: 400/407 looper letters, 22 selfloop transitions, 8 changer transitions 0/33 dead transitions. [2023-08-30 10:19:57,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 33 transitions, 213 flow [2023-08-30 10:19:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 10:19:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 10:19:57,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1308 transitions. [2023-08-30 10:19:57,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3570843570843571 [2023-08-30 10:19:57,706 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1308 transitions. [2023-08-30 10:19:57,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1308 transitions. [2023-08-30 10:19:57,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:57,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1308 transitions. [2023-08-30 10:19:57,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.33333333333334) internal successors, (1308), 9 states have internal predecessors, (1308), 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) [2023-08-30 10:19:57,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 407.0) internal successors, (4070), 10 states have internal predecessors, (4070), 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) [2023-08-30 10:19:57,715 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 407.0) internal successors, (4070), 10 states have internal predecessors, (4070), 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) [2023-08-30 10:19:57,715 INFO L175 Difference]: Start difference. First operand has 59 places, 30 transitions, 143 flow. Second operand 9 states and 1308 transitions. [2023-08-30 10:19:57,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 33 transitions, 213 flow [2023-08-30 10:19:57,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 33 transitions, 200 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 10:19:57,717 INFO L231 Difference]: Finished difference. Result has 55 places, 29 transitions, 145 flow [2023-08-30 10:19:57,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=145, PETRI_PLACES=55, PETRI_TRANSITIONS=29} [2023-08-30 10:19:57,717 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-08-30 10:19:57,718 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 29 transitions, 145 flow [2023-08-30 10:19:57,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 145.22222222222223) internal successors, (2614), 18 states have internal predecessors, (2614), 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) [2023-08-30 10:19:57,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:19:57,719 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:57,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 10:19:57,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 10:19:57,925 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-30 10:19:57,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:19:57,926 INFO L85 PathProgramCache]: Analyzing trace with hash 38922604, now seen corresponding path program 1 times [2023-08-30 10:19:57,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:19:57,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985284741] [2023-08-30 10:19:57,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:19:57,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:19:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:19:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:19:58,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:19:58,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985284741] [2023-08-30 10:19:58,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985284741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:19:58,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:19:58,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:19:58,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794929760] [2023-08-30 10:19:58,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:19:58,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:19:58,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:19:58,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:19:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:19:58,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 407 [2023-08-30 10:19:58,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 29 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 175.33333333333334) internal successors, (1052), 6 states have internal predecessors, (1052), 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) [2023-08-30 10:19:58,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:19:58,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 407 [2023-08-30 10:19:58,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:19:58,331 INFO L130 PetriNetUnfolder]: 9/46 cut-off events. [2023-08-30 10:19:58,331 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-08-30 10:19:58,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 46 events. 9/46 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 4 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 144. Up to 16 conditions per place. [2023-08-30 10:19:58,332 INFO L137 encePairwiseOnDemand]: 402/407 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-08-30 10:19:58,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 29 transitions, 196 flow [2023-08-30 10:19:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:19:58,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:19:58,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 879 transitions. [2023-08-30 10:19:58,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43194103194103195 [2023-08-30 10:19:58,335 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 879 transitions. [2023-08-30 10:19:58,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 879 transitions. [2023-08-30 10:19:58,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:19:58,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 879 transitions. [2023-08-30 10:19:58,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 175.8) internal successors, (879), 5 states have internal predecessors, (879), 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) [2023-08-30 10:19:58,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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) [2023-08-30 10:19:58,340 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 407.0) internal successors, (2442), 6 states have internal predecessors, (2442), 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) [2023-08-30 10:19:58,340 INFO L175 Difference]: Start difference. First operand has 55 places, 29 transitions, 145 flow. Second operand 5 states and 879 transitions. [2023-08-30 10:19:58,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 29 transitions, 196 flow [2023-08-30 10:19:58,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 29 transitions, 179 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 10:19:58,342 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-08-30 10:19:58,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=407, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-08-30 10:19:58,343 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -8 predicate places. [2023-08-30 10:19:58,343 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-08-30 10:19:58,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 175.33333333333334) internal successors, (1052), 6 states have internal predecessors, (1052), 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) [2023-08-30 10:19:58,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2023-08-30 10:19:58,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-30 10:19:58,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 10:19:58,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 10:19:58,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 10:19:58,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 10:19:58,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 10:19:58,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 10:19:58,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 10:19:58,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-30 10:19:58,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 10:19:58,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 10:19:58,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 10:19:58,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 10:19:58,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 10:19:58,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 10:19:58,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 10:19:58,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 10:19:58,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 10:19:58,355 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:19:58,357 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-30 10:19:58,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 216 transitions, 440 flow [2023-08-30 10:19:58,401 INFO L130 PetriNetUnfolder]: 45/293 cut-off events. [2023-08-30 10:19:58,401 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-30 10:19:58,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 293 events. 45/293 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 998 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-08-30 10:19:58,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 216 transitions, 440 flow [2023-08-30 10:19:58,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 205 transitions, 415 flow [2023-08-30 10:19:58,403 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:19:58,404 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 205 transitions, 415 flow [2023-08-30 10:19:58,404 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 205 transitions, 415 flow [2023-08-30 10:19:58,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 205 transitions, 415 flow [2023-08-30 10:19:58,421 INFO L130 PetriNetUnfolder]: 44/282 cut-off events. [2023-08-30 10:19:58,421 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:19:58,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 282 events. 44/282 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 944 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-08-30 10:19:58,427 INFO L119 LiptonReduction]: Number of co-enabled transitions 13050 [2023-08-30 10:20:01,112 INFO L134 LiptonReduction]: Checked pairs total: 22286 [2023-08-30 10:20:01,113 INFO L136 LiptonReduction]: Total number of compositions: 179 [2023-08-30 10:20:01,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-30 10:20:01,118 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=true, 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;@593067fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:20:01,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-30 10:20:01,121 INFO L130 PetriNetUnfolder]: 11/44 cut-off events. [2023-08-30 10:20:01,121 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:20:01,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:01,122 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-30 10:20:01,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:20:01,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:01,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2050580531, now seen corresponding path program 1 times [2023-08-30 10:20:01,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:01,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718316905] [2023-08-30 10:20:01,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:01,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:20:01,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:01,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718316905] [2023-08-30 10:20:01,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718316905] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:01,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:01,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:20:01,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571372618] [2023-08-30 10:20:01,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:01,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:20:01,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:01,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:20:01,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:20:01,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 395 [2023-08-30 10:20:01,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 75 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 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) [2023-08-30 10:20:01,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:01,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 395 [2023-08-30 10:20:01,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:01,282 INFO L130 PetriNetUnfolder]: 454/967 cut-off events. [2023-08-30 10:20:01,282 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:20:01,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1868 conditions, 967 events. 454/967 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5361 event pairs, 414 based on Foata normal form. 131/814 useless extension candidates. Maximal degree in co-relation 1806. Up to 894 conditions per place. [2023-08-30 10:20:01,284 INFO L137 encePairwiseOnDemand]: 369/395 looper letters, 26 selfloop transitions, 2 changer transitions 21/53 dead transitions. [2023-08-30 10:20:01,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 203 flow [2023-08-30 10:20:01,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:20:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:20:01,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 613 transitions. [2023-08-30 10:20:01,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5172995780590718 [2023-08-30 10:20:01,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 613 transitions. [2023-08-30 10:20:01,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 613 transitions. [2023-08-30 10:20:01,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:01,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 613 transitions. [2023-08-30 10:20:01,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 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) [2023-08-30 10:20:01,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 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) [2023-08-30 10:20:01,291 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 395.0) internal successors, (1580), 4 states have internal predecessors, (1580), 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) [2023-08-30 10:20:01,291 INFO L175 Difference]: Start difference. First operand has 53 places, 75 transitions, 155 flow. Second operand 3 states and 613 transitions. [2023-08-30 10:20:01,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 203 flow [2023-08-30 10:20:01,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 203 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:20:01,292 INFO L231 Difference]: Finished difference. Result has 55 places, 32 transitions, 79 flow [2023-08-30 10:20:01,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=55, PETRI_TRANSITIONS=32} [2023-08-30 10:20:01,293 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-08-30 10:20:01,293 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 32 transitions, 79 flow [2023-08-30 10:20:01,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 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) [2023-08-30 10:20:01,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:01,294 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:01,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 10:20:01,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:20:01,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:01,295 INFO L85 PathProgramCache]: Analyzing trace with hash -289370782, now seen corresponding path program 1 times [2023-08-30 10:20:01,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:01,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363786893] [2023-08-30 10:20:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:01,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:01,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:20:01,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:01,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363786893] [2023-08-30 10:20:01,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363786893] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:01,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459750010] [2023-08-30 10:20:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:01,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:01,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:01,333 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:01,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 10:20:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:01,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:20:01,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:20:01,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:20:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:20:01,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459750010] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:20:01,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:20:01,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:20:01,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977987840] [2023-08-30 10:20:01,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:20:01,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:20:01,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:01,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:20:01,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:20:01,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 395 [2023-08-30 10:20:01,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 32 transitions, 79 flow. Second operand has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 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) [2023-08-30 10:20:01,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:01,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 395 [2023-08-30 10:20:01,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:01,501 INFO L130 PetriNetUnfolder]: 97/233 cut-off events. [2023-08-30 10:20:01,501 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:20:01,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 233 events. 97/233 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 859 event pairs, 90 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 451. Up to 210 conditions per place. [2023-08-30 10:20:01,502 INFO L137 encePairwiseOnDemand]: 392/395 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2023-08-30 10:20:01,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 153 flow [2023-08-30 10:20:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:20:01,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:20:01,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1114 transitions. [2023-08-30 10:20:01,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470042194092827 [2023-08-30 10:20:01,506 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1114 transitions. [2023-08-30 10:20:01,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1114 transitions. [2023-08-30 10:20:01,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:01,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1114 transitions. [2023-08-30 10:20:01,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.66666666666666) internal successors, (1114), 6 states have internal predecessors, (1114), 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) [2023-08-30 10:20:01,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 395.0) internal successors, (2765), 7 states have internal predecessors, (2765), 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) [2023-08-30 10:20:01,512 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 395.0) internal successors, (2765), 7 states have internal predecessors, (2765), 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) [2023-08-30 10:20:01,513 INFO L175 Difference]: Start difference. First operand has 55 places, 32 transitions, 79 flow. Second operand 6 states and 1114 transitions. [2023-08-30 10:20:01,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 153 flow [2023-08-30 10:20:01,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 149 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:20:01,514 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 111 flow [2023-08-30 10:20:01,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-30 10:20:01,515 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-08-30 10:20:01,515 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 111 flow [2023-08-30 10:20:01,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 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) [2023-08-30 10:20:01,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:01,516 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-30 10:20:01,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 10:20:01,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:01,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:20:01,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash -114117645, now seen corresponding path program 2 times [2023-08-30 10:20:01,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:01,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006521691] [2023-08-30 10:20:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:01,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:20:01,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:01,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006521691] [2023-08-30 10:20:01,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006521691] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:01,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968280121] [2023-08-30 10:20:01,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:20:01,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:01,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:01,785 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:01,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 10:20:01,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:20:01,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:20:01,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:20:01,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:01,910 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:20:01,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:20:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 10:20:01,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968280121] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:20:01,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:20:01,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:20:01,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661806619] [2023-08-30 10:20:01,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:20:01,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:20:01,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:01,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:20:01,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:20:01,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 395 [2023-08-30 10:20:01,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 111 flow. Second operand has 13 states, 13 states have (on average 181.30769230769232) internal successors, (2357), 13 states have internal predecessors, (2357), 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) [2023-08-30 10:20:01,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:01,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 395 [2023-08-30 10:20:01,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:02,080 INFO L130 PetriNetUnfolder]: 97/239 cut-off events. [2023-08-30 10:20:02,081 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 10:20:02,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 239 events. 97/239 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 859 event pairs, 90 based on Foata normal form. 6/157 useless extension candidates. Maximal degree in co-relation 442. Up to 210 conditions per place. [2023-08-30 10:20:02,082 INFO L137 encePairwiseOnDemand]: 392/395 looper letters, 26 selfloop transitions, 11 changer transitions 0/41 dead transitions. [2023-08-30 10:20:02,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 41 transitions, 221 flow [2023-08-30 10:20:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:20:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:20:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2203 transitions. [2023-08-30 10:20:02,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647679324894515 [2023-08-30 10:20:02,091 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2203 transitions. [2023-08-30 10:20:02,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2203 transitions. [2023-08-30 10:20:02,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:02,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2203 transitions. [2023-08-30 10:20:02,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 183.58333333333334) internal successors, (2203), 12 states have internal predecessors, (2203), 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) [2023-08-30 10:20:02,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 395.0) internal successors, (5135), 13 states have internal predecessors, (5135), 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) [2023-08-30 10:20:02,104 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 395.0) internal successors, (5135), 13 states have internal predecessors, (5135), 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) [2023-08-30 10:20:02,104 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 111 flow. Second operand 12 states and 2203 transitions. [2023-08-30 10:20:02,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 41 transitions, 221 flow [2023-08-30 10:20:02,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 41 transitions, 207 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:20:02,106 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 181 flow [2023-08-30 10:20:02,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=395, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-08-30 10:20:02,106 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2023-08-30 10:20:02,106 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 181 flow [2023-08-30 10:20:02,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 181.30769230769232) internal successors, (2357), 13 states have internal predecessors, (2357), 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) [2023-08-30 10:20:02,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:02,107 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-30 10:20:02,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 10:20:02,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:02,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 10:20:02,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:02,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1557271149, now seen corresponding path program 3 times [2023-08-30 10:20:02,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:02,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603880303] [2023-08-30 10:20:02,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:02,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:20:02,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 10:20:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 10:20:02,388 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 10:20:02,388 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 10:20:02,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-30 10:20:02,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 10:20:02,389 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-30 10:20:02,389 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-30 10:20:02,390 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 10:20:02,390 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 10:20:02,421 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 10:20:02,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 293 transitions, 604 flow [2023-08-30 10:20:02,466 INFO L130 PetriNetUnfolder]: 75/483 cut-off events. [2023-08-30 10:20:02,467 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-30 10:20:02,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 483 events. 75/483 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2032 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 295. Up to 12 conditions per place. [2023-08-30 10:20:02,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 293 transitions, 604 flow [2023-08-30 10:20:02,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 293 transitions, 604 flow [2023-08-30 10:20:02,476 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 10:20:02,476 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 253 places, 293 transitions, 604 flow [2023-08-30 10:20:02,477 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 253 places, 293 transitions, 604 flow [2023-08-30 10:20:02,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 293 transitions, 604 flow [2023-08-30 10:20:02,528 INFO L130 PetriNetUnfolder]: 75/483 cut-off events. [2023-08-30 10:20:02,528 INFO L131 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2023-08-30 10:20:02,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 483 events. 75/483 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2032 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 295. Up to 12 conditions per place. [2023-08-30 10:20:02,551 INFO L119 LiptonReduction]: Number of co-enabled transitions 40200 [2023-08-30 10:20:06,106 INFO L134 LiptonReduction]: Checked pairs total: 72665 [2023-08-30 10:20:06,106 INFO L136 LiptonReduction]: Total number of compositions: 255 [2023-08-30 10:20:06,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 10:20:06,108 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=true, 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;@593067fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 10:20:06,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-30 10:20:06,109 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 10:20:06,109 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 10:20:06,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:06,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 10:20:06,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:20:06,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:06,110 INFO L85 PathProgramCache]: Analyzing trace with hash 52884, now seen corresponding path program 1 times [2023-08-30 10:20:06,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:06,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902032379] [2023-08-30 10:20:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:06,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:20:06,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:06,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902032379] [2023-08-30 10:20:06,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902032379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:06,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:06,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 10:20:06,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159574948] [2023-08-30 10:20:06,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:06,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:20:06,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:06,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:20:06,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:20:06,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 548 [2023-08-30 10:20:06,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 115 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 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) [2023-08-30 10:20:06,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:06,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 548 [2023-08-30 10:20:06,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:08,559 INFO L130 PetriNetUnfolder]: 18251/28784 cut-off events. [2023-08-30 10:20:08,559 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 10:20:08,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55609 conditions, 28784 events. 18251/28784 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 214164 event pairs, 17105 based on Foata normal form. 4164/24475 useless extension candidates. Maximal degree in co-relation 24652. Up to 26707 conditions per place. [2023-08-30 10:20:08,772 INFO L137 encePairwiseOnDemand]: 512/548 looper letters, 70 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-30 10:20:08,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 330 flow [2023-08-30 10:20:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:20:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:20:08,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 836 transitions. [2023-08-30 10:20:08,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085158150851582 [2023-08-30 10:20:08,776 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 836 transitions. [2023-08-30 10:20:08,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 836 transitions. [2023-08-30 10:20:08,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:08,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 836 transitions. [2023-08-30 10:20:08,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 278.6666666666667) internal successors, (836), 3 states have internal predecessors, (836), 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) [2023-08-30 10:20:08,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 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) [2023-08-30 10:20:08,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 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) [2023-08-30 10:20:08,782 INFO L175 Difference]: Start difference. First operand has 83 places, 115 transitions, 248 flow. Second operand 3 states and 836 transitions. [2023-08-30 10:20:08,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 330 flow [2023-08-30 10:20:08,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:20:08,784 INFO L231 Difference]: Finished difference. Result has 85 places, 84 transitions, 198 flow [2023-08-30 10:20:08,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=85, PETRI_TRANSITIONS=84} [2023-08-30 10:20:08,786 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2023-08-30 10:20:08,786 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 84 transitions, 198 flow [2023-08-30 10:20:08,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 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) [2023-08-30 10:20:08,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:08,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 10:20:08,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 10:20:08,787 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:20:08,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:08,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1642502, now seen corresponding path program 1 times [2023-08-30 10:20:08,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:08,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070278538] [2023-08-30 10:20:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:08,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:20:08,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:08,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070278538] [2023-08-30 10:20:08,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070278538] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:08,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612147443] [2023-08-30 10:20:08,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:08,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:08,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:08,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:08,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 10:20:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:08,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 10:20:08,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:20:08,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:20:08,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612147443] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:08,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:20:08,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 10:20:08,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345386369] [2023-08-30 10:20:08,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:08,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:20:08,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:08,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:20:08,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:20:08,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 548 [2023-08-30 10:20:08,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 84 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 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) [2023-08-30 10:20:08,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:08,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 548 [2023-08-30 10:20:08,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:10,642 INFO L130 PetriNetUnfolder]: 18251/28783 cut-off events. [2023-08-30 10:20:10,643 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 10:20:10,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55614 conditions, 28783 events. 18251/28783 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 214110 event pairs, 17105 based on Foata normal form. 0/20311 useless extension candidates. Maximal degree in co-relation 55601. Up to 26705 conditions per place. [2023-08-30 10:20:10,878 INFO L137 encePairwiseOnDemand]: 545/548 looper letters, 69 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-30 10:20:10,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 336 flow [2023-08-30 10:20:10,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:20:10,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:20:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1044 transitions. [2023-08-30 10:20:10,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4762773722627737 [2023-08-30 10:20:10,882 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1044 transitions. [2023-08-30 10:20:10,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1044 transitions. [2023-08-30 10:20:10,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:10,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1044 transitions. [2023-08-30 10:20:10,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 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) [2023-08-30 10:20:10,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 548.0) internal successors, (2740), 5 states have internal predecessors, (2740), 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) [2023-08-30 10:20:10,888 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 548.0) internal successors, (2740), 5 states have internal predecessors, (2740), 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) [2023-08-30 10:20:10,889 INFO L175 Difference]: Start difference. First operand has 85 places, 84 transitions, 198 flow. Second operand 4 states and 1044 transitions. [2023-08-30 10:20:10,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 336 flow [2023-08-30 10:20:10,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 83 transitions, 332 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 10:20:10,892 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 194 flow [2023-08-30 10:20:10,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2023-08-30 10:20:10,893 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2023-08-30 10:20:10,893 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 194 flow [2023-08-30 10:20:10,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.75) internal successors, (975), 4 states have internal predecessors, (975), 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) [2023-08-30 10:20:10,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:10,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:10,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 10:20:11,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 10:20:11,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:20:11,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:11,101 INFO L85 PathProgramCache]: Analyzing trace with hash 874584475, now seen corresponding path program 1 times [2023-08-30 10:20:11,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:11,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973870490] [2023-08-30 10:20:11,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:11,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:20:11,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:11,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973870490] [2023-08-30 10:20:11,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973870490] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:11,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179801775] [2023-08-30 10:20:11,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:11,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:11,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:11,135 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:11,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 10:20:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:11,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:20:11,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:20:11,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:20:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:20:11,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179801775] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:20:11,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:20:11,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 10:20:11,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87996976] [2023-08-30 10:20:11,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:20:11,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:20:11,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:11,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:20:11,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:20:11,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 548 [2023-08-30 10:20:11,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 243.57142857142858) internal successors, (1705), 7 states have internal predecessors, (1705), 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) [2023-08-30 10:20:11,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:11,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 548 [2023-08-30 10:20:11,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:12,899 INFO L130 PetriNetUnfolder]: 18251/28786 cut-off events. [2023-08-30 10:20:12,900 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-08-30 10:20:12,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55623 conditions, 28786 events. 18251/28786 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 214220 event pairs, 17105 based on Foata normal form. 0/20314 useless extension candidates. Maximal degree in co-relation 55610. Up to 26706 conditions per place. [2023-08-30 10:20:13,035 INFO L137 encePairwiseOnDemand]: 545/548 looper letters, 69 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-08-30 10:20:13,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 86 transitions, 354 flow [2023-08-30 10:20:13,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 10:20:13,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 10:20:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1529 transitions. [2023-08-30 10:20:13,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650243309002433 [2023-08-30 10:20:13,040 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1529 transitions. [2023-08-30 10:20:13,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1529 transitions. [2023-08-30 10:20:13,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:13,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1529 transitions. [2023-08-30 10:20:13,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 254.83333333333334) internal successors, (1529), 6 states have internal predecessors, (1529), 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) [2023-08-30 10:20:13,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 548.0) internal successors, (3836), 7 states have internal predecessors, (3836), 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) [2023-08-30 10:20:13,049 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 548.0) internal successors, (3836), 7 states have internal predecessors, (3836), 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) [2023-08-30 10:20:13,049 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 194 flow. Second operand 6 states and 1529 transitions. [2023-08-30 10:20:13,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 86 transitions, 354 flow [2023-08-30 10:20:13,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 86 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:20:13,051 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 227 flow [2023-08-30 10:20:13,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2023-08-30 10:20:13,051 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2023-08-30 10:20:13,052 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 227 flow [2023-08-30 10:20:13,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 243.57142857142858) internal successors, (1705), 7 states have internal predecessors, (1705), 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) [2023-08-30 10:20:13,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:13,052 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:13,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 10:20:13,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 10:20:13,257 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:20:13,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:13,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1708027305, now seen corresponding path program 2 times [2023-08-30 10:20:13,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:13,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591650679] [2023-08-30 10:20:13,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:13,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:13,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 10:20:13,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:13,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591650679] [2023-08-30 10:20:13,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591650679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:13,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:13,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:20:13,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900299072] [2023-08-30 10:20:13,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:13,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:20:13,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:13,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:20:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:20:13,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 548 [2023-08-30 10:20:13,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2023-08-30 10:20:13,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:13,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 548 [2023-08-30 10:20:13,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:14,953 INFO L130 PetriNetUnfolder]: 17908/28330 cut-off events. [2023-08-30 10:20:14,954 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2023-08-30 10:20:14,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55110 conditions, 28330 events. 17908/28330 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 214801 event pairs, 8177 based on Foata normal form. 0/19878 useless extension candidates. Maximal degree in co-relation 55093. Up to 26596 conditions per place. [2023-08-30 10:20:15,104 INFO L137 encePairwiseOnDemand]: 543/548 looper letters, 92 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-30 10:20:15,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 106 transitions, 455 flow [2023-08-30 10:20:15,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:20:15,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:20:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 822 transitions. [2023-08-30 10:20:15,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-30 10:20:15,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 822 transitions. [2023-08-30 10:20:15,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 822 transitions. [2023-08-30 10:20:15,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:15,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 822 transitions. [2023-08-30 10:20:15,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.0) internal successors, (822), 3 states have internal predecessors, (822), 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) [2023-08-30 10:20:15,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 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) [2023-08-30 10:20:15,113 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 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) [2023-08-30 10:20:15,113 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 227 flow. Second operand 3 states and 822 transitions. [2023-08-30 10:20:15,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 106 transitions, 455 flow [2023-08-30 10:20:15,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 441 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 10:20:15,117 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 229 flow [2023-08-30 10:20:15,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2023-08-30 10:20:15,117 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2023-08-30 10:20:15,117 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 229 flow [2023-08-30 10:20:15,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2023-08-30 10:20:15,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:15,118 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:15,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 10:20:15,118 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:20:15,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:15,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1788809949, now seen corresponding path program 1 times [2023-08-30 10:20:15,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:15,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215782701] [2023-08-30 10:20:15,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:15,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:15,188 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:20:15,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:15,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215782701] [2023-08-30 10:20:15,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215782701] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:15,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816889698] [2023-08-30 10:20:15,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:15,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:15,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:15,190 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:15,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 10:20:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:15,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 10:20:15,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:20:15,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:20:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 10:20:15,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816889698] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:20:15,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:20:15,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 10:20:15,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371947945] [2023-08-30 10:20:15,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:20:15,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 10:20:15,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:15,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 10:20:15,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:20:15,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 548 [2023-08-30 10:20:15,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 229 flow. Second operand has 13 states, 13 states have (on average 243.46153846153845) internal successors, (3165), 13 states have internal predecessors, (3165), 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) [2023-08-30 10:20:15,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:15,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 548 [2023-08-30 10:20:15,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:17,219 INFO L130 PetriNetUnfolder]: 18313/28500 cut-off events. [2023-08-30 10:20:17,219 INFO L131 PetriNetUnfolder]: For 911/911 co-relation queries the response was YES. [2023-08-30 10:20:17,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56697 conditions, 28500 events. 18313/28500 cut-off events. For 911/911 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 209613 event pairs, 17069 based on Foata normal form. 6/20409 useless extension candidates. Maximal degree in co-relation 56679. Up to 26613 conditions per place. [2023-08-30 10:20:17,351 INFO L137 encePairwiseOnDemand]: 545/548 looper letters, 70 selfloop transitions, 11 changer transitions 0/93 dead transitions. [2023-08-30 10:20:17,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 93 transitions, 427 flow [2023-08-30 10:20:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 10:20:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 10:20:17,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2990 transitions. [2023-08-30 10:20:17,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45468369829683697 [2023-08-30 10:20:17,360 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2990 transitions. [2023-08-30 10:20:17,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2990 transitions. [2023-08-30 10:20:17,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:17,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2990 transitions. [2023-08-30 10:20:17,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 249.16666666666666) internal successors, (2990), 12 states have internal predecessors, (2990), 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) [2023-08-30 10:20:17,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 548.0) internal successors, (7124), 13 states have internal predecessors, (7124), 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) [2023-08-30 10:20:17,375 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 548.0) internal successors, (7124), 13 states have internal predecessors, (7124), 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) [2023-08-30 10:20:17,376 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 229 flow. Second operand 12 states and 2990 transitions. [2023-08-30 10:20:17,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 93 transitions, 427 flow [2023-08-30 10:20:17,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 93 transitions, 425 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:20:17,379 INFO L231 Difference]: Finished difference. Result has 110 places, 93 transitions, 311 flow [2023-08-30 10:20:17,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=311, PETRI_PLACES=110, PETRI_TRANSITIONS=93} [2023-08-30 10:20:17,380 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 27 predicate places. [2023-08-30 10:20:17,380 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 311 flow [2023-08-30 10:20:17,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 243.46153846153845) internal successors, (3165), 13 states have internal predecessors, (3165), 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) [2023-08-30 10:20:17,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:17,381 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:17,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 10:20:17,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:17,586 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:20:17,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:17,587 INFO L85 PathProgramCache]: Analyzing trace with hash 749338653, now seen corresponding path program 2 times [2023-08-30 10:20:17,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:17,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478239027] [2023-08-30 10:20:17,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:17,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:17,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:17,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478239027] [2023-08-30 10:20:17,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478239027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:17,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:17,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:20:17,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356189101] [2023-08-30 10:20:17,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:17,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:20:17,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:17,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:20:17,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-08-30 10:20:17,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 548 [2023-08-30 10:20:17,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 93 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 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) [2023-08-30 10:20:17,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:17,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 548 [2023-08-30 10:20:17,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:19,903 INFO L130 PetriNetUnfolder]: 17492/27924 cut-off events. [2023-08-30 10:20:19,903 INFO L131 PetriNetUnfolder]: For 862/862 co-relation queries the response was YES. [2023-08-30 10:20:19,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55810 conditions, 27924 events. 17492/27924 cut-off events. For 862/862 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 210637 event pairs, 7027 based on Foata normal form. 0/20741 useless extension candidates. Maximal degree in co-relation 55784. Up to 22430 conditions per place. [2023-08-30 10:20:20,067 INFO L137 encePairwiseOnDemand]: 536/548 looper letters, 132 selfloop transitions, 8 changer transitions 0/152 dead transitions. [2023-08-30 10:20:20,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 152 transitions, 730 flow [2023-08-30 10:20:20,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:20:20,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:20:20,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1066 transitions. [2023-08-30 10:20:20,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863138686131387 [2023-08-30 10:20:20,070 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1066 transitions. [2023-08-30 10:20:20,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1066 transitions. [2023-08-30 10:20:20,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:20,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1066 transitions. [2023-08-30 10:20:20,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 266.5) internal successors, (1066), 4 states have internal predecessors, (1066), 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) [2023-08-30 10:20:20,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 548.0) internal successors, (2740), 5 states have internal predecessors, (2740), 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) [2023-08-30 10:20:20,078 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 548.0) internal successors, (2740), 5 states have internal predecessors, (2740), 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) [2023-08-30 10:20:20,078 INFO L175 Difference]: Start difference. First operand has 110 places, 93 transitions, 311 flow. Second operand 4 states and 1066 transitions. [2023-08-30 10:20:20,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 152 transitions, 730 flow [2023-08-30 10:20:20,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 152 transitions, 682 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-30 10:20:20,082 INFO L231 Difference]: Finished difference. Result has 110 places, 99 transitions, 329 flow [2023-08-30 10:20:20,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2023-08-30 10:20:20,083 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 27 predicate places. [2023-08-30 10:20:20,083 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 329 flow [2023-08-30 10:20:20,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 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) [2023-08-30 10:20:20,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:20,084 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:20,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 10:20:20,084 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:20:20,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:20,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1604855514, now seen corresponding path program 1 times [2023-08-30 10:20:20,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:20,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217262389] [2023-08-30 10:20:20,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:20,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:20,128 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:20,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:20,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217262389] [2023-08-30 10:20:20,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217262389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:20,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:20,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:20:20,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192107033] [2023-08-30 10:20:20,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:20,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:20:20,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:20,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:20:20,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:20:20,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 548 [2023-08-30 10:20:20,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 329 flow. Second operand has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 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) [2023-08-30 10:20:20,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:20,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 548 [2023-08-30 10:20:20,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:22,253 INFO L130 PetriNetUnfolder]: 16869/26939 cut-off events. [2023-08-30 10:20:22,253 INFO L131 PetriNetUnfolder]: For 4227/4259 co-relation queries the response was YES. [2023-08-30 10:20:22,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58947 conditions, 26939 events. 16869/26939 cut-off events. For 4227/4259 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 201249 event pairs, 15436 based on Foata normal form. 0/21577 useless extension candidates. Maximal degree in co-relation 58920. Up to 25431 conditions per place. [2023-08-30 10:20:22,402 INFO L137 encePairwiseOnDemand]: 546/548 looper letters, 85 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2023-08-30 10:20:22,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 98 transitions, 497 flow [2023-08-30 10:20:22,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:20:22,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:20:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2023-08-30 10:20:22,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4860097323600973 [2023-08-30 10:20:22,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2023-08-30 10:20:22,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2023-08-30 10:20:22,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:22,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2023-08-30 10:20:22,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 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) [2023-08-30 10:20:22,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 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) [2023-08-30 10:20:22,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 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) [2023-08-30 10:20:22,408 INFO L175 Difference]: Start difference. First operand has 110 places, 99 transitions, 329 flow. Second operand 3 states and 799 transitions. [2023-08-30 10:20:22,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 98 transitions, 497 flow [2023-08-30 10:20:22,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 98 transitions, 497 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 10:20:22,419 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 327 flow [2023-08-30 10:20:22,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2023-08-30 10:20:22,420 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 28 predicate places. [2023-08-30 10:20:22,420 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 327 flow [2023-08-30 10:20:22,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 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) [2023-08-30 10:20:22,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:22,421 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:22,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 10:20:22,421 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:20:22,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:22,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1604855569, now seen corresponding path program 1 times [2023-08-30 10:20:22,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:22,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897695564] [2023-08-30 10:20:22,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:22,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:20:22,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:22,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897695564] [2023-08-30 10:20:22,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897695564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:22,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:22,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:20:22,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993379298] [2023-08-30 10:20:22,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:22,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:20:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:20:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:20:22,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 548 [2023-08-30 10:20:22,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2023-08-30 10:20:22,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:22,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 548 [2023-08-30 10:20:22,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:24,247 INFO L130 PetriNetUnfolder]: 16260/25975 cut-off events. [2023-08-30 10:20:24,247 INFO L131 PetriNetUnfolder]: For 3652/3654 co-relation queries the response was YES. [2023-08-30 10:20:24,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56674 conditions, 25975 events. 16260/25975 cut-off events. For 3652/3654 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 194317 event pairs, 5268 based on Foata normal form. 0/21136 useless extension candidates. Maximal degree in co-relation 56646. Up to 22936 conditions per place. [2023-08-30 10:20:24,525 INFO L137 encePairwiseOnDemand]: 544/548 looper letters, 119 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2023-08-30 10:20:24,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 135 transitions, 671 flow [2023-08-30 10:20:24,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:20:24,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:20:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 831 transitions. [2023-08-30 10:20:24,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054744525547445 [2023-08-30 10:20:24,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 831 transitions. [2023-08-30 10:20:24,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 831 transitions. [2023-08-30 10:20:24,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:24,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 831 transitions. [2023-08-30 10:20:24,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 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) [2023-08-30 10:20:24,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 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) [2023-08-30 10:20:24,530 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 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) [2023-08-30 10:20:24,531 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 327 flow. Second operand 3 states and 831 transitions. [2023-08-30 10:20:24,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 135 transitions, 671 flow [2023-08-30 10:20:24,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 135 transitions, 670 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:20:24,538 INFO L231 Difference]: Finished difference. Result has 112 places, 98 transitions, 338 flow [2023-08-30 10:20:24,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=112, PETRI_TRANSITIONS=98} [2023-08-30 10:20:24,539 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 29 predicate places. [2023-08-30 10:20:24,539 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 98 transitions, 338 flow [2023-08-30 10:20:24,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 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) [2023-08-30 10:20:24,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:24,539 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:24,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 10:20:24,540 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:20:24,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:24,540 INFO L85 PathProgramCache]: Analyzing trace with hash -851284215, now seen corresponding path program 1 times [2023-08-30 10:20:24,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:24,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817687400] [2023-08-30 10:20:24,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:24,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:24,757 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:24,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:24,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817687400] [2023-08-30 10:20:24,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817687400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:24,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:24,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 10:20:24,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790547084] [2023-08-30 10:20:24,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:24,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 10:20:24,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:24,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 10:20:24,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 10:20:25,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 548 [2023-08-30 10:20:25,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 98 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 229.5) internal successors, (1836), 8 states have internal predecessors, (1836), 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) [2023-08-30 10:20:25,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:25,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 548 [2023-08-30 10:20:25,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:27,190 INFO L130 PetriNetUnfolder]: 18043/28767 cut-off events. [2023-08-30 10:20:27,190 INFO L131 PetriNetUnfolder]: For 6877/6893 co-relation queries the response was YES. [2023-08-30 10:20:27,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64125 conditions, 28767 events. 18043/28767 cut-off events. For 6877/6893 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 217603 event pairs, 5430 based on Foata normal form. 7/23429 useless extension candidates. Maximal degree in co-relation 64097. Up to 21114 conditions per place. [2023-08-30 10:20:27,392 INFO L137 encePairwiseOnDemand]: 538/548 looper letters, 195 selfloop transitions, 18 changer transitions 0/225 dead transitions. [2023-08-30 10:20:27,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 225 transitions, 1121 flow [2023-08-30 10:20:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:20:27,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:20:27,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1795 transitions. [2023-08-30 10:20:27,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46793534932221065 [2023-08-30 10:20:27,396 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1795 transitions. [2023-08-30 10:20:27,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1795 transitions. [2023-08-30 10:20:27,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:27,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1795 transitions. [2023-08-30 10:20:27,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.42857142857144) internal successors, (1795), 7 states have internal predecessors, (1795), 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) [2023-08-30 10:20:27,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 548.0) internal successors, (4384), 8 states have internal predecessors, (4384), 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) [2023-08-30 10:20:27,404 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 548.0) internal successors, (4384), 8 states have internal predecessors, (4384), 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) [2023-08-30 10:20:27,404 INFO L175 Difference]: Start difference. First operand has 112 places, 98 transitions, 338 flow. Second operand 7 states and 1795 transitions. [2023-08-30 10:20:27,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 225 transitions, 1121 flow [2023-08-30 10:20:27,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 225 transitions, 1108 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 10:20:27,419 INFO L231 Difference]: Finished difference. Result has 118 places, 108 transitions, 427 flow [2023-08-30 10:20:27,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=118, PETRI_TRANSITIONS=108} [2023-08-30 10:20:27,420 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 35 predicate places. [2023-08-30 10:20:27,420 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 108 transitions, 427 flow [2023-08-30 10:20:27,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 229.5) internal successors, (1836), 8 states have internal predecessors, (1836), 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) [2023-08-30 10:20:27,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:27,421 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:27,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 10:20:27,421 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:20:27,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:27,422 INFO L85 PathProgramCache]: Analyzing trace with hash -851284214, now seen corresponding path program 1 times [2023-08-30 10:20:27,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:27,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839252387] [2023-08-30 10:20:27,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:27,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:27,529 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:27,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:27,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839252387] [2023-08-30 10:20:27,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839252387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:27,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:20:27,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 10:20:27,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887038985] [2023-08-30 10:20:27,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:27,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 10:20:27,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:27,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 10:20:27,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 10:20:27,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 548 [2023-08-30 10:20:27,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 108 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2023-08-30 10:20:27,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:27,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 548 [2023-08-30 10:20:27,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:30,816 INFO L130 PetriNetUnfolder]: 25305/40521 cut-off events. [2023-08-30 10:20:30,816 INFO L131 PetriNetUnfolder]: For 13569/13621 co-relation queries the response was YES. [2023-08-30 10:20:30,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94310 conditions, 40521 events. 25305/40521 cut-off events. For 13569/13621 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 324781 event pairs, 10399 based on Foata normal form. 0/34216 useless extension candidates. Maximal degree in co-relation 94279. Up to 19057 conditions per place. [2023-08-30 10:20:31,065 INFO L137 encePairwiseOnDemand]: 537/548 looper letters, 236 selfloop transitions, 20 changer transitions 0/268 dead transitions. [2023-08-30 10:20:31,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 268 transitions, 1465 flow [2023-08-30 10:20:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:20:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:20:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1374 transitions. [2023-08-30 10:20:31,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014598540145986 [2023-08-30 10:20:31,068 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1374 transitions. [2023-08-30 10:20:31,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1374 transitions. [2023-08-30 10:20:31,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:31,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1374 transitions. [2023-08-30 10:20:31,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 274.8) internal successors, (1374), 5 states have internal predecessors, (1374), 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) [2023-08-30 10:20:31,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 548.0) internal successors, (3288), 6 states have internal predecessors, (3288), 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) [2023-08-30 10:20:31,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 548.0) internal successors, (3288), 6 states have internal predecessors, (3288), 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) [2023-08-30 10:20:31,074 INFO L175 Difference]: Start difference. First operand has 118 places, 108 transitions, 427 flow. Second operand 5 states and 1374 transitions. [2023-08-30 10:20:31,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 268 transitions, 1465 flow [2023-08-30 10:20:31,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 268 transitions, 1434 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 10:20:31,175 INFO L231 Difference]: Finished difference. Result has 124 places, 119 transitions, 561 flow [2023-08-30 10:20:31,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=561, PETRI_PLACES=124, PETRI_TRANSITIONS=119} [2023-08-30 10:20:31,176 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 41 predicate places. [2023-08-30 10:20:31,176 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 119 transitions, 561 flow [2023-08-30 10:20:31,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 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) [2023-08-30 10:20:31,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:31,177 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:31,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 10:20:31,177 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:20:31,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:31,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1932486981, now seen corresponding path program 1 times [2023-08-30 10:20:31,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:31,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764258038] [2023-08-30 10:20:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:31,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:31,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:31,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764258038] [2023-08-30 10:20:31,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764258038] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:31,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274128764] [2023-08-30 10:20:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:31,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:31,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:31,229 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:31,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 10:20:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:31,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 10:20:31,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:31,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:20:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:31,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274128764] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:20:31,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:20:31,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-30 10:20:31,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859132227] [2023-08-30 10:20:31,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:20:31,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:20:31,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:31,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:20:31,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 10:20:31,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 548 [2023-08-30 10:20:31,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 119 transitions, 561 flow. Second operand has 7 states, 7 states have (on average 245.28571428571428) internal successors, (1717), 7 states have internal predecessors, (1717), 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) [2023-08-30 10:20:31,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:31,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 548 [2023-08-30 10:20:31,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:31,927 INFO L130 PetriNetUnfolder]: 2482/4517 cut-off events. [2023-08-30 10:20:31,927 INFO L131 PetriNetUnfolder]: For 7569/7571 co-relation queries the response was YES. [2023-08-30 10:20:31,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14552 conditions, 4517 events. 2482/4517 cut-off events. For 7569/7571 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 30845 event pairs, 483 based on Foata normal form. 535/4675 useless extension candidates. Maximal degree in co-relation 14516. Up to 2985 conditions per place. [2023-08-30 10:20:31,945 INFO L137 encePairwiseOnDemand]: 545/548 looper letters, 135 selfloop transitions, 3 changer transitions 0/147 dead transitions. [2023-08-30 10:20:31,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 147 transitions, 1012 flow [2023-08-30 10:20:31,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:20:31,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:20:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1306 transitions. [2023-08-30 10:20:31,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47664233576642334 [2023-08-30 10:20:31,946 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1306 transitions. [2023-08-30 10:20:31,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1306 transitions. [2023-08-30 10:20:31,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:31,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1306 transitions. [2023-08-30 10:20:31,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 261.2) internal successors, (1306), 5 states have internal predecessors, (1306), 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) [2023-08-30 10:20:31,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 548.0) internal successors, (3288), 6 states have internal predecessors, (3288), 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) [2023-08-30 10:20:31,951 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 548.0) internal successors, (3288), 6 states have internal predecessors, (3288), 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) [2023-08-30 10:20:31,951 INFO L175 Difference]: Start difference. First operand has 124 places, 119 transitions, 561 flow. Second operand 5 states and 1306 transitions. [2023-08-30 10:20:31,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 147 transitions, 1012 flow [2023-08-30 10:20:31,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 147 transitions, 990 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-30 10:20:31,965 INFO L231 Difference]: Finished difference. Result has 99 places, 80 transitions, 406 flow [2023-08-30 10:20:31,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=99, PETRI_TRANSITIONS=80} [2023-08-30 10:20:31,966 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 16 predicate places. [2023-08-30 10:20:31,966 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 80 transitions, 406 flow [2023-08-30 10:20:31,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 245.28571428571428) internal successors, (1717), 7 states have internal predecessors, (1717), 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) [2023-08-30 10:20:31,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:31,966 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:31,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 10:20:32,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 10:20:32,167 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:20:32,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:32,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1163758175, now seen corresponding path program 1 times [2023-08-30 10:20:32,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:32,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531527312] [2023-08-30 10:20:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:32,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:32,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:32,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531527312] [2023-08-30 10:20:32,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531527312] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:32,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785861943] [2023-08-30 10:20:32,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:32,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:32,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:32,437 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:32,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 10:20:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:32,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:20:32,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:32,604 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:20:32,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:20:32,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-30 10:20:32,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 10:20:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:32,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:20:32,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785861943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:20:32,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:20:32,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-30 10:20:32,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283167169] [2023-08-30 10:20:32,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:20:32,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 10:20:32,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:32,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 10:20:32,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-08-30 10:20:32,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 548 [2023-08-30 10:20:32,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 80 transitions, 406 flow. Second operand has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 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) [2023-08-30 10:20:32,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:32,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 548 [2023-08-30 10:20:32,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:33,556 INFO L130 PetriNetUnfolder]: 2445/4523 cut-off events. [2023-08-30 10:20:33,557 INFO L131 PetriNetUnfolder]: For 9938/9941 co-relation queries the response was YES. [2023-08-30 10:20:33,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14648 conditions, 4523 events. 2445/4523 cut-off events. For 9938/9941 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 31822 event pairs, 1050 based on Foata normal form. 51/4199 useless extension candidates. Maximal degree in co-relation 14613. Up to 2523 conditions per place. [2023-08-30 10:20:33,571 INFO L137 encePairwiseOnDemand]: 536/548 looper letters, 104 selfloop transitions, 16 changer transitions 5/134 dead transitions. [2023-08-30 10:20:33,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 134 transitions, 873 flow [2023-08-30 10:20:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 10:20:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 10:20:33,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1683 transitions. [2023-08-30 10:20:33,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387382690302398 [2023-08-30 10:20:33,573 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1683 transitions. [2023-08-30 10:20:33,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1683 transitions. [2023-08-30 10:20:33,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:20:33,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1683 transitions. [2023-08-30 10:20:33,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 240.42857142857142) internal successors, (1683), 7 states have internal predecessors, (1683), 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) [2023-08-30 10:20:33,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 548.0) internal successors, (4384), 8 states have internal predecessors, (4384), 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) [2023-08-30 10:20:33,577 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 548.0) internal successors, (4384), 8 states have internal predecessors, (4384), 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) [2023-08-30 10:20:33,577 INFO L175 Difference]: Start difference. First operand has 99 places, 80 transitions, 406 flow. Second operand 7 states and 1683 transitions. [2023-08-30 10:20:33,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 134 transitions, 873 flow [2023-08-30 10:20:33,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 134 transitions, 856 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 10:20:33,584 INFO L231 Difference]: Finished difference. Result has 105 places, 85 transitions, 496 flow [2023-08-30 10:20:33,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=496, PETRI_PLACES=105, PETRI_TRANSITIONS=85} [2023-08-30 10:20:33,585 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 22 predicate places. [2023-08-30 10:20:33,585 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 85 transitions, 496 flow [2023-08-30 10:20:33,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 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) [2023-08-30 10:20:33,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:20:33,586 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:20:33,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 10:20:33,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 10:20:33,791 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:20:33,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:20:33,791 INFO L85 PathProgramCache]: Analyzing trace with hash -500169890, now seen corresponding path program 1 times [2023-08-30 10:20:33,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:20:33,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189214877] [2023-08-30 10:20:33,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:33,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:20:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:34,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:20:34,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189214877] [2023-08-30 10:20:34,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189214877] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:20:34,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784389019] [2023-08-30 10:20:34,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:20:34,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:20:34,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:20:34,126 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:20:34,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 10:20:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:20:34,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:20:34,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:20:34,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:20:34,334 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:20:34,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:20:34,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:20:34,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:20:34,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:20:34,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:20:34,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 10:20:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:34,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:20:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:20:36,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784389019] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:20:36,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:20:36,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 16 [2023-08-30 10:20:36,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775886347] [2023-08-30 10:20:36,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:20:36,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 10:20:36,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:20:36,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 10:20:36,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=229, Unknown=3, NotChecked=0, Total=306 [2023-08-30 10:20:39,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:20:39,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 548 [2023-08-30 10:20:39,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 85 transitions, 496 flow. Second operand has 18 states, 18 states have (on average 201.22222222222223) internal successors, (3622), 18 states have internal predecessors, (3622), 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) [2023-08-30 10:20:39,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:20:39,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 548 [2023-08-30 10:20:39,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:20:56,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:20:58,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:04,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:06,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:08,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:10,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:12,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:14,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:16,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:18,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:21,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:27,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:29,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:31,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:33,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:35,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:38,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:21:40,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:42,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:45,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:21:47,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:49,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:51,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:21:53,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:00,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:02,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:04,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:13,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:28,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:30,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:32,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:33,445 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_894 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_894) |c_~#a~0.base|) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|)) 2147483648))) (forall ((v_ArrVal_892 Int) (|~#a~0.offset| Int) (|t_funThread1of2ForFork0_~i~0#1| Int) (v_ArrVal_894 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_~#a~0.base|)) (.cse1 (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|))) (or (< 0 (+ 2147483648 (select (select (store (store |c_#memory_int| |c_~#a~0.base| (store .cse0 .cse1 v_ArrVal_892)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_894) |c_~#a~0.base|) .cse1))) (< v_ArrVal_892 (+ (select .cse0 .cse1) 1)))))) is different from false [2023-08-30 10:22:35,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:37,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:39,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:42,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:44,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:46,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:22:59,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:01,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:03,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:05,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:07,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:08,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:10,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:13,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:15,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:17,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:19,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:23:21,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:23,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:25,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:27,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:29,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:31,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:33,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:35,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:37,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:40,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:42,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:44,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:46,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:48,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:54,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:56,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:23:58,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:00,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:02,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:04,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:07,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:09,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:11,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:13,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:15,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:18,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:20,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:22,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:24,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:26,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:28,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:30,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:32,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:39,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:41,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:43,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:46,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:49,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:51,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:24:51,889 INFO L130 PetriNetUnfolder]: 2897/5538 cut-off events. [2023-08-30 10:24:51,889 INFO L131 PetriNetUnfolder]: For 12787/12790 co-relation queries the response was YES. [2023-08-30 10:24:51,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17800 conditions, 5538 events. 2897/5538 cut-off events. For 12787/12790 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 41612 event pairs, 633 based on Foata normal form. 114/5199 useless extension candidates. Maximal degree in co-relation 17762. Up to 1117 conditions per place. [2023-08-30 10:24:51,910 INFO L137 encePairwiseOnDemand]: 525/548 looper letters, 202 selfloop transitions, 90 changer transitions 85/386 dead transitions. [2023-08-30 10:24:51,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 386 transitions, 2629 flow [2023-08-30 10:24:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-30 10:24:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-30 10:24:51,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6304 transitions. [2023-08-30 10:24:51,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3834549878345499 [2023-08-30 10:24:51,917 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6304 transitions. [2023-08-30 10:24:51,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6304 transitions. [2023-08-30 10:24:51,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:51,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6304 transitions. [2023-08-30 10:24:51,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 210.13333333333333) internal successors, (6304), 30 states have internal predecessors, (6304), 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) [2023-08-30 10:24:51,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 548.0) internal successors, (16988), 31 states have internal predecessors, (16988), 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) [2023-08-30 10:24:51,937 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 548.0) internal successors, (16988), 31 states have internal predecessors, (16988), 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) [2023-08-30 10:24:51,937 INFO L175 Difference]: Start difference. First operand has 105 places, 85 transitions, 496 flow. Second operand 30 states and 6304 transitions. [2023-08-30 10:24:51,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 386 transitions, 2629 flow [2023-08-30 10:24:51,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 386 transitions, 2624 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 10:24:51,959 INFO L231 Difference]: Finished difference. Result has 149 places, 159 transitions, 1480 flow [2023-08-30 10:24:51,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1480, PETRI_PLACES=149, PETRI_TRANSITIONS=159} [2023-08-30 10:24:51,959 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 66 predicate places. [2023-08-30 10:24:51,960 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 159 transitions, 1480 flow [2023-08-30 10:24:51,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 201.22222222222223) internal successors, (3622), 18 states have internal predecessors, (3622), 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) [2023-08-30 10:24:51,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:51,960 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:51,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 10:24:52,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-30 10:24:52,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:24:52,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:52,166 INFO L85 PathProgramCache]: Analyzing trace with hash 125329443, now seen corresponding path program 1 times [2023-08-30 10:24:52,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:52,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522037336] [2023-08-30 10:24:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:52,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:24:52,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:52,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522037336] [2023-08-30 10:24:52,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522037336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:52,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:52,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 10:24:52,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949049085] [2023-08-30 10:24:52,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:52,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 10:24:52,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 10:24:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 10:24:52,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 548 [2023-08-30 10:24:52,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 159 transitions, 1480 flow. Second operand has 3 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 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) [2023-08-30 10:24:52,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:52,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 548 [2023-08-30 10:24:52,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:52,733 INFO L130 PetriNetUnfolder]: 1805/3711 cut-off events. [2023-08-30 10:24:52,733 INFO L131 PetriNetUnfolder]: For 18327/18363 co-relation queries the response was YES. [2023-08-30 10:24:52,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16118 conditions, 3711 events. 1805/3711 cut-off events. For 18327/18363 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 27925 event pairs, 884 based on Foata normal form. 5/3584 useless extension candidates. Maximal degree in co-relation 16063. Up to 2285 conditions per place. [2023-08-30 10:24:52,755 INFO L137 encePairwiseOnDemand]: 540/548 looper letters, 136 selfloop transitions, 43 changer transitions 0/188 dead transitions. [2023-08-30 10:24:52,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 188 transitions, 2107 flow [2023-08-30 10:24:52,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 10:24:52,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 10:24:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 772 transitions. [2023-08-30 10:24:52,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46958637469586373 [2023-08-30 10:24:52,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 772 transitions. [2023-08-30 10:24:52,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 772 transitions. [2023-08-30 10:24:52,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:52,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 772 transitions. [2023-08-30 10:24:52,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 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) [2023-08-30 10:24:52,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 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) [2023-08-30 10:24:52,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 548.0) internal successors, (2192), 4 states have internal predecessors, (2192), 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) [2023-08-30 10:24:52,758 INFO L175 Difference]: Start difference. First operand has 149 places, 159 transitions, 1480 flow. Second operand 3 states and 772 transitions. [2023-08-30 10:24:52,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 188 transitions, 2107 flow [2023-08-30 10:24:52,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 188 transitions, 1877 flow, removed 100 selfloop flow, removed 9 redundant places. [2023-08-30 10:24:52,825 INFO L231 Difference]: Finished difference. Result has 137 places, 165 transitions, 1540 flow [2023-08-30 10:24:52,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1540, PETRI_PLACES=137, PETRI_TRANSITIONS=165} [2023-08-30 10:24:52,826 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 54 predicate places. [2023-08-30 10:24:52,826 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 165 transitions, 1540 flow [2023-08-30 10:24:52,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.33333333333334) internal successors, (724), 3 states have internal predecessors, (724), 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) [2023-08-30 10:24:52,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:52,826 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:52,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 10:24:52,827 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:24:52,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:52,827 INFO L85 PathProgramCache]: Analyzing trace with hash 125329402, now seen corresponding path program 1 times [2023-08-30 10:24:52,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:52,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349354403] [2023-08-30 10:24:52,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:52,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:52,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:53,121 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:24:53,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:53,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349354403] [2023-08-30 10:24:53,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349354403] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:24:53,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672751204] [2023-08-30 10:24:53,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:53,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:53,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:53,125 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:24:53,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 10:24:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:53,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:24:53,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:24:53,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:24:53,362 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:24:53,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:24:53,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:53,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:24:53,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:24:53,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:24:53,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:24:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:24:53,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:24:53,599 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1008 (Array Int Int)) (|~#a~0.offset| Int) (|t_funThread2of2ForFork0_~i~0#1| Int)) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1008) |c_~#a~0.base|) (+ (* 28 |t_funThread2of2ForFork0_~i~0#1|) |~#a~0.offset|))))) is different from false [2023-08-30 10:24:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-30 10:24:53,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672751204] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:24:53,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:24:53,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-08-30 10:24:53,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209861170] [2023-08-30 10:24:53,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:24:53,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 10:24:53,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:53,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 10:24:53,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=175, Unknown=1, NotChecked=28, Total=272 [2023-08-30 10:24:53,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 548 [2023-08-30 10:24:53,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 165 transitions, 1540 flow. Second operand has 17 states, 17 states have (on average 205.35294117647058) internal successors, (3491), 17 states have internal predecessors, (3491), 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) [2023-08-30 10:24:53,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:53,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 548 [2023-08-30 10:24:53,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:55,100 INFO L130 PetriNetUnfolder]: 1887/3919 cut-off events. [2023-08-30 10:24:55,100 INFO L131 PetriNetUnfolder]: For 21473/21498 co-relation queries the response was YES. [2023-08-30 10:24:55,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17043 conditions, 3919 events. 1887/3919 cut-off events. For 21473/21498 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 29651 event pairs, 585 based on Foata normal form. 94/3951 useless extension candidates. Maximal degree in co-relation 16991. Up to 2049 conditions per place. [2023-08-30 10:24:55,131 INFO L137 encePairwiseOnDemand]: 536/548 looper letters, 214 selfloop transitions, 76 changer transitions 11/310 dead transitions. [2023-08-30 10:24:55,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 310 transitions, 3359 flow [2023-08-30 10:24:55,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:24:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:24:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2168 transitions. [2023-08-30 10:24:55,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956204379562044 [2023-08-30 10:24:55,136 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2168 transitions. [2023-08-30 10:24:55,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2168 transitions. [2023-08-30 10:24:55,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:55,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2168 transitions. [2023-08-30 10:24:55,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 216.8) internal successors, (2168), 10 states have internal predecessors, (2168), 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) [2023-08-30 10:24:55,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 548.0) internal successors, (6028), 11 states have internal predecessors, (6028), 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) [2023-08-30 10:24:55,143 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 548.0) internal successors, (6028), 11 states have internal predecessors, (6028), 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) [2023-08-30 10:24:55,143 INFO L175 Difference]: Start difference. First operand has 137 places, 165 transitions, 1540 flow. Second operand 10 states and 2168 transitions. [2023-08-30 10:24:55,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 310 transitions, 3359 flow [2023-08-30 10:24:55,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 310 transitions, 3243 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 10:24:55,218 INFO L231 Difference]: Finished difference. Result has 151 places, 213 transitions, 2370 flow [2023-08-30 10:24:55,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2370, PETRI_PLACES=151, PETRI_TRANSITIONS=213} [2023-08-30 10:24:55,220 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 68 predicate places. [2023-08-30 10:24:55,221 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 213 transitions, 2370 flow [2023-08-30 10:24:55,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 205.35294117647058) internal successors, (3491), 17 states have internal predecessors, (3491), 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) [2023-08-30 10:24:55,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:55,221 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:55,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 10:24:55,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:55,426 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:24:55,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:55,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2082680470, now seen corresponding path program 1 times [2023-08-30 10:24:55,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:55,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138160722] [2023-08-30 10:24:55,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:55,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:55,586 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:24:55,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:55,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138160722] [2023-08-30 10:24:55,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138160722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:55,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:24:55,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:24:55,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759215570] [2023-08-30 10:24:55,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:55,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:24:55,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:55,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:24:55,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:24:55,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 548 [2023-08-30 10:24:55,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 213 transitions, 2370 flow. Second operand has 5 states, 5 states have (on average 227.4) internal successors, (1137), 5 states have internal predecessors, (1137), 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) [2023-08-30 10:24:55,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:55,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 548 [2023-08-30 10:24:55,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:56,176 INFO L130 PetriNetUnfolder]: 1099/2491 cut-off events. [2023-08-30 10:24:56,177 INFO L131 PetriNetUnfolder]: For 14070/14070 co-relation queries the response was YES. [2023-08-30 10:24:56,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11303 conditions, 2491 events. 1099/2491 cut-off events. For 14070/14070 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 17700 event pairs, 306 based on Foata normal form. 242/2679 useless extension candidates. Maximal degree in co-relation 11256. Up to 1310 conditions per place. [2023-08-30 10:24:56,196 INFO L137 encePairwiseOnDemand]: 535/548 looper letters, 182 selfloop transitions, 20 changer transitions 9/217 dead transitions. [2023-08-30 10:24:56,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 217 transitions, 2721 flow [2023-08-30 10:24:56,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:24:56,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:24:56,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 970 transitions. [2023-08-30 10:24:56,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425182481751825 [2023-08-30 10:24:56,199 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 970 transitions. [2023-08-30 10:24:56,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 970 transitions. [2023-08-30 10:24:56,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:56,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 970 transitions. [2023-08-30 10:24:56,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 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) [2023-08-30 10:24:56,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 548.0) internal successors, (2740), 5 states have internal predecessors, (2740), 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) [2023-08-30 10:24:56,204 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 548.0) internal successors, (2740), 5 states have internal predecessors, (2740), 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) [2023-08-30 10:24:56,204 INFO L175 Difference]: Start difference. First operand has 151 places, 213 transitions, 2370 flow. Second operand 4 states and 970 transitions. [2023-08-30 10:24:56,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 217 transitions, 2721 flow [2023-08-30 10:24:56,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 217 transitions, 2617 flow, removed 32 selfloop flow, removed 6 redundant places. [2023-08-30 10:24:56,261 INFO L231 Difference]: Finished difference. Result has 145 places, 154 transitions, 1583 flow [2023-08-30 10:24:56,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1583, PETRI_PLACES=145, PETRI_TRANSITIONS=154} [2023-08-30 10:24:56,262 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 62 predicate places. [2023-08-30 10:24:56,262 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 154 transitions, 1583 flow [2023-08-30 10:24:56,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 227.4) internal successors, (1137), 5 states have internal predecessors, (1137), 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) [2023-08-30 10:24:56,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:56,263 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:56,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 10:24:56,263 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:24:56,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:56,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1400464510, now seen corresponding path program 2 times [2023-08-30 10:24:56,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:56,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555207845] [2023-08-30 10:24:56,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:56,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:24:56,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:56,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555207845] [2023-08-30 10:24:56,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555207845] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:24:56,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990009044] [2023-08-30 10:24:56,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:24:56,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:56,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:56,749 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:24:56,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 10:24:56,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:24:56,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:24:56,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 10:24:56,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:24:56,947 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:24:56,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:24:57,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-30 10:24:57,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-30 10:24:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:24:57,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 10:24:57,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990009044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:24:57,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 10:24:57,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2023-08-30 10:24:57,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482947179] [2023-08-30 10:24:57,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:24:57,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 10:24:57,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:57,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 10:24:57,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-08-30 10:24:57,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 548 [2023-08-30 10:24:57,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 154 transitions, 1583 flow. Second operand has 6 states, 6 states have (on average 234.33333333333334) internal successors, (1406), 6 states have internal predecessors, (1406), 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) [2023-08-30 10:24:57,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:57,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 548 [2023-08-30 10:24:57,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:24:57,767 INFO L130 PetriNetUnfolder]: 981/2395 cut-off events. [2023-08-30 10:24:57,768 INFO L131 PetriNetUnfolder]: For 13225/13264 co-relation queries the response was YES. [2023-08-30 10:24:57,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11303 conditions, 2395 events. 981/2395 cut-off events. For 13225/13264 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 17974 event pairs, 514 based on Foata normal form. 25/2362 useless extension candidates. Maximal degree in co-relation 11257. Up to 1370 conditions per place. [2023-08-30 10:24:57,782 INFO L137 encePairwiseOnDemand]: 539/548 looper letters, 143 selfloop transitions, 24 changer transitions 2/178 dead transitions. [2023-08-30 10:24:57,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 178 transitions, 2121 flow [2023-08-30 10:24:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 10:24:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 10:24:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1220 transitions. [2023-08-30 10:24:57,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44525547445255476 [2023-08-30 10:24:57,784 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1220 transitions. [2023-08-30 10:24:57,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1220 transitions. [2023-08-30 10:24:57,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:24:57,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1220 transitions. [2023-08-30 10:24:57,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 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) [2023-08-30 10:24:57,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 548.0) internal successors, (3288), 6 states have internal predecessors, (3288), 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) [2023-08-30 10:24:57,788 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 548.0) internal successors, (3288), 6 states have internal predecessors, (3288), 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) [2023-08-30 10:24:57,788 INFO L175 Difference]: Start difference. First operand has 145 places, 154 transitions, 1583 flow. Second operand 5 states and 1220 transitions. [2023-08-30 10:24:57,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 178 transitions, 2121 flow [2023-08-30 10:24:57,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 178 transitions, 2114 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 10:24:57,833 INFO L231 Difference]: Finished difference. Result has 150 places, 157 transitions, 1719 flow [2023-08-30 10:24:57,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1719, PETRI_PLACES=150, PETRI_TRANSITIONS=157} [2023-08-30 10:24:57,834 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 67 predicate places. [2023-08-30 10:24:57,834 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 157 transitions, 1719 flow [2023-08-30 10:24:57,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 234.33333333333334) internal successors, (1406), 6 states have internal predecessors, (1406), 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) [2023-08-30 10:24:57,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:24:57,834 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:24:57,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 10:24:58,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:58,037 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:24:58,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:24:58,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1400464551, now seen corresponding path program 2 times [2023-08-30 10:24:58,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:24:58,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064254770] [2023-08-30 10:24:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:24:58,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:24:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:24:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:24:59,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:24:59,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064254770] [2023-08-30 10:24:59,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064254770] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:24:59,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005619432] [2023-08-30 10:24:59,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:24:59,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:24:59,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:24:59,021 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:24:59,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 10:24:59,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:24:59,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:24:59,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 10:24:59,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:24:59,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:24:59,272 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:24:59,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:24:59,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:24:59,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:24:59,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:24:59,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 10:24:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:24:59,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:24:59,521 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1212 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1212) |c_~#a~0.base|) (+ |c_~#a~0.offset| (* |c_t_funThread2of2ForFork0_~i~0#1| 28))) 2147483648))) is different from false [2023-08-30 10:24:59,582 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1210 Int) (v_ArrVal_1212 (Array Int Int)) (|~#a~0.offset| Int) (|t_funThread2of2ForFork0_~i~0#1| Int)) (let ((.cse0 (select |c_#memory_int| |c_~#a~0.base|)) (.cse1 (+ (* 28 |t_funThread2of2ForFork0_~i~0#1|) |~#a~0.offset|))) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_~#a~0.base| (store .cse0 .cse1 v_ArrVal_1210)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1212) |c_~#a~0.base|) .cse1) 2147483648)) (< v_ArrVal_1210 (+ (select .cse0 .cse1) 1))))) is different from false [2023-08-30 10:24:59,655 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1210 Int) (v_ArrVal_1212 (Array Int Int)) (|~#a~0.offset| Int) (|t_funThread2of2ForFork0_~i~0#1| Int) (v_ArrVal_1209 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1209))) (let ((.cse0 (select .cse2 |c_~#a~0.base|)) (.cse1 (+ (* 28 |t_funThread2of2ForFork0_~i~0#1|) |~#a~0.offset|))) (or (< v_ArrVal_1210 (+ (select .cse0 .cse1) 1)) (< 0 (+ (select (select (store (store .cse2 |c_~#a~0.base| (store .cse0 .cse1 v_ArrVal_1210)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1212) |c_~#a~0.base|) .cse1) 2147483648)))))) is different from false [2023-08-30 10:24:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 5 not checked. [2023-08-30 10:24:59,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005619432] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:24:59,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:24:59,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6] total 18 [2023-08-30 10:24:59,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876219775] [2023-08-30 10:24:59,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:24:59,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:24:59,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:24:59,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:24:59,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=221, Unknown=3, NotChecked=96, Total=380 [2023-08-30 10:24:59,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 548 [2023-08-30 10:24:59,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 157 transitions, 1719 flow. Second operand has 20 states, 20 states have (on average 200.3) internal successors, (4006), 20 states have internal predecessors, (4006), 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) [2023-08-30 10:24:59,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:24:59,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 548 [2023-08-30 10:24:59,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:01,036 INFO L130 PetriNetUnfolder]: 967/2364 cut-off events. [2023-08-30 10:25:01,036 INFO L131 PetriNetUnfolder]: For 14394/14424 co-relation queries the response was YES. [2023-08-30 10:25:01,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11488 conditions, 2364 events. 967/2364 cut-off events. For 14394/14424 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 17640 event pairs, 298 based on Foata normal form. 20/2335 useless extension candidates. Maximal degree in co-relation 11440. Up to 1176 conditions per place. [2023-08-30 10:25:01,049 INFO L137 encePairwiseOnDemand]: 536/548 looper letters, 120 selfloop transitions, 34 changer transitions 34/197 dead transitions. [2023-08-30 10:25:01,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 197 transitions, 2360 flow [2023-08-30 10:25:01,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:25:01,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:25:01,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1673 transitions. [2023-08-30 10:25:01,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38161496350364965 [2023-08-30 10:25:01,051 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1673 transitions. [2023-08-30 10:25:01,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1673 transitions. [2023-08-30 10:25:01,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:01,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1673 transitions. [2023-08-30 10:25:01,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 209.125) internal successors, (1673), 8 states have internal predecessors, (1673), 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) [2023-08-30 10:25:01,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 548.0) internal successors, (4932), 9 states have internal predecessors, (4932), 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) [2023-08-30 10:25:01,057 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 548.0) internal successors, (4932), 9 states have internal predecessors, (4932), 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) [2023-08-30 10:25:01,057 INFO L175 Difference]: Start difference. First operand has 150 places, 157 transitions, 1719 flow. Second operand 8 states and 1673 transitions. [2023-08-30 10:25:01,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 197 transitions, 2360 flow [2023-08-30 10:25:01,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 197 transitions, 2357 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 10:25:01,105 INFO L231 Difference]: Finished difference. Result has 158 places, 145 transitions, 1715 flow [2023-08-30 10:25:01,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1715, PETRI_PLACES=158, PETRI_TRANSITIONS=145} [2023-08-30 10:25:01,105 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 75 predicate places. [2023-08-30 10:25:01,106 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 145 transitions, 1715 flow [2023-08-30 10:25:01,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 200.3) internal successors, (4006), 20 states have internal predecessors, (4006), 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) [2023-08-30 10:25:01,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:01,106 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:01,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 10:25:01,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-30 10:25:01,311 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:25:01,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:01,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2034650907, now seen corresponding path program 1 times [2023-08-30 10:25:01,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:01,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972885010] [2023-08-30 10:25:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:01,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:25:01,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:01,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972885010] [2023-08-30 10:25:01,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972885010] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:25:01,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236395800] [2023-08-30 10:25:01,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:01,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:01,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:25:01,625 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:25:01,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 10:25:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:01,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:25:01,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:25:01,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:25:01,851 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:25:01,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:25:01,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:25:01,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:25:01,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:25:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:25:02,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:25:04,451 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:25:04,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236395800] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:25:04,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:25:04,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-08-30 10:25:04,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923150008] [2023-08-30 10:25:04,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:25:04,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 10:25:04,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:04,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 10:25:04,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=192, Unknown=3, NotChecked=0, Total=272 [2023-08-30 10:25:08,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:25:08,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 548 [2023-08-30 10:25:08,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 145 transitions, 1715 flow. Second operand has 17 states, 17 states have (on average 199.7058823529412) internal successors, (3395), 17 states have internal predecessors, (3395), 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) [2023-08-30 10:25:08,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:08,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 548 [2023-08-30 10:25:08,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:09,253 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1294 Int) (|~#a~0.offset| Int) (|t_funThread2of2ForFork0_~i~0#1| Int) (|t_funThread1of2ForFork0_~i~0#1| Int)) (let ((.cse0 (select |c_#memory_int| |c_~#a~0.base|)) (.cse1 (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|))) (or (< (select (store .cse0 .cse1 v_ArrVal_1294) (+ (* 28 |t_funThread2of2ForFork0_~i~0#1|) |~#a~0.offset|)) 2147483647) (< (+ (select .cse0 .cse1) 1) v_ArrVal_1294)))) (forall ((v_ArrVal_1294 Int) (|~#a~0.offset| Int) (|t_funThread2of2ForFork0_~i~0#1| Int) (|t_funThread1of2ForFork0_~i~0#1| Int) (v_ArrVal_1293 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1293) |c_~#a~0.base|)) (.cse3 (+ (* |t_funThread1of2ForFork0_~i~0#1| 28) |~#a~0.offset|))) (or (< (select (store .cse2 .cse3 v_ArrVal_1294) (+ (* 28 |t_funThread2of2ForFork0_~i~0#1|) |~#a~0.offset|)) 2147483647) (< (+ (select .cse2 .cse3) 1) v_ArrVal_1294))))) is different from false [2023-08-30 10:25:09,703 INFO L130 PetriNetUnfolder]: 754/1874 cut-off events. [2023-08-30 10:25:09,704 INFO L131 PetriNetUnfolder]: For 13059/13088 co-relation queries the response was YES. [2023-08-30 10:25:09,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9402 conditions, 1874 events. 754/1874 cut-off events. For 13059/13088 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 13464 event pairs, 248 based on Foata normal form. 18/1880 useless extension candidates. Maximal degree in co-relation 9352. Up to 1044 conditions per place. [2023-08-30 10:25:09,714 INFO L137 encePairwiseOnDemand]: 531/548 looper letters, 155 selfloop transitions, 48 changer transitions 0/212 dead transitions. [2023-08-30 10:25:09,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 212 transitions, 2596 flow [2023-08-30 10:25:09,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 10:25:09,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 10:25:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2673 transitions. [2023-08-30 10:25:09,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3752105558674902 [2023-08-30 10:25:09,717 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2673 transitions. [2023-08-30 10:25:09,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2673 transitions. [2023-08-30 10:25:09,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:09,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2673 transitions. [2023-08-30 10:25:09,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 205.6153846153846) internal successors, (2673), 13 states have internal predecessors, (2673), 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) [2023-08-30 10:25:09,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 548.0) internal successors, (7672), 14 states have internal predecessors, (7672), 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) [2023-08-30 10:25:09,725 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 548.0) internal successors, (7672), 14 states have internal predecessors, (7672), 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) [2023-08-30 10:25:09,725 INFO L175 Difference]: Start difference. First operand has 158 places, 145 transitions, 1715 flow. Second operand 13 states and 2673 transitions. [2023-08-30 10:25:09,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 212 transitions, 2596 flow [2023-08-30 10:25:09,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 212 transitions, 2539 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-30 10:25:09,770 INFO L231 Difference]: Finished difference. Result has 167 places, 168 transitions, 2100 flow [2023-08-30 10:25:09,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2100, PETRI_PLACES=167, PETRI_TRANSITIONS=168} [2023-08-30 10:25:09,771 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 84 predicate places. [2023-08-30 10:25:09,771 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 168 transitions, 2100 flow [2023-08-30 10:25:09,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 199.7058823529412) internal successors, (3395), 17 states have internal predecessors, (3395), 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) [2023-08-30 10:25:09,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:09,772 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:09,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 10:25:09,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:09,976 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:25:09,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:09,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1533859381, now seen corresponding path program 1 times [2023-08-30 10:25:09,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:09,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482226983] [2023-08-30 10:25:09,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:09,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:25:10,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:10,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482226983] [2023-08-30 10:25:10,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482226983] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:25:10,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848730128] [2023-08-30 10:25:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:10,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:10,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:25:10,306 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:25:10,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 10:25:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:10,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 10:25:10,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:25:10,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:25:10,544 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:25:10,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:25:10,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:25:10,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:25:10,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:25:10,709 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:25:10,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:25:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:25:11,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848730128] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:25:11,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:25:11,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-08-30 10:25:11,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345174361] [2023-08-30 10:25:11,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:25:11,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 10:25:11,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:11,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 10:25:11,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=148, Unknown=1, NotChecked=0, Total=210 [2023-08-30 10:25:13,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:25:14,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 548 [2023-08-30 10:25:14,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 168 transitions, 2100 flow. Second operand has 15 states, 15 states have (on average 203.53333333333333) internal successors, (3053), 15 states have internal predecessors, (3053), 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) [2023-08-30 10:25:14,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:14,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 548 [2023-08-30 10:25:14,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:15,195 INFO L130 PetriNetUnfolder]: 760/1889 cut-off events. [2023-08-30 10:25:15,195 INFO L131 PetriNetUnfolder]: For 14675/14712 co-relation queries the response was YES. [2023-08-30 10:25:15,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10028 conditions, 1889 events. 760/1889 cut-off events. For 14675/14712 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 13606 event pairs, 293 based on Foata normal form. 14/1890 useless extension candidates. Maximal degree in co-relation 9971. Up to 1352 conditions per place. [2023-08-30 10:25:15,208 INFO L137 encePairwiseOnDemand]: 539/548 looper letters, 155 selfloop transitions, 19 changer transitions 0/183 dead transitions. [2023-08-30 10:25:15,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 183 transitions, 2513 flow [2023-08-30 10:25:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 10:25:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 10:25:15,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1679 transitions. [2023-08-30 10:25:15,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3829835766423358 [2023-08-30 10:25:15,212 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1679 transitions. [2023-08-30 10:25:15,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1679 transitions. [2023-08-30 10:25:15,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:15,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1679 transitions. [2023-08-30 10:25:15,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 209.875) internal successors, (1679), 8 states have internal predecessors, (1679), 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) [2023-08-30 10:25:15,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 548.0) internal successors, (4932), 9 states have internal predecessors, (4932), 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) [2023-08-30 10:25:15,217 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 548.0) internal successors, (4932), 9 states have internal predecessors, (4932), 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) [2023-08-30 10:25:15,217 INFO L175 Difference]: Start difference. First operand has 167 places, 168 transitions, 2100 flow. Second operand 8 states and 1679 transitions. [2023-08-30 10:25:15,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 183 transitions, 2513 flow [2023-08-30 10:25:15,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 183 transitions, 2425 flow, removed 33 selfloop flow, removed 4 redundant places. [2023-08-30 10:25:15,271 INFO L231 Difference]: Finished difference. Result has 168 places, 165 transitions, 2028 flow [2023-08-30 10:25:15,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=1966, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2028, PETRI_PLACES=168, PETRI_TRANSITIONS=165} [2023-08-30 10:25:15,271 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 85 predicate places. [2023-08-30 10:25:15,271 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 165 transitions, 2028 flow [2023-08-30 10:25:15,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 203.53333333333333) internal successors, (3053), 15 states have internal predecessors, (3053), 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) [2023-08-30 10:25:15,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:15,272 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:15,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 10:25:15,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:15,473 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:25:15,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:15,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1204686976, now seen corresponding path program 2 times [2023-08-30 10:25:15,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:15,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713693715] [2023-08-30 10:25:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:15,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:25:15,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:15,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713693715] [2023-08-30 10:25:15,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713693715] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:25:15,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955026829] [2023-08-30 10:25:15,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:25:15,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:15,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:25:15,925 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:25:15,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 10:25:16,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:25:16,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:25:16,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-30 10:25:16,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:25:16,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:25:16,213 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:25:16,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:25:16,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:25:16,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-30 10:25:16,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:16,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-30 10:25:16,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-30 10:25:16,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:16,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-30 10:25:16,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 10:25:16,500 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:25:16,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-30 10:25:16,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 10:25:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:25:16,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:25:16,787 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1468 (Array Int Int)) (|v_t_funThread2of2ForFork0_~i~0#1_73| Int) (v_ArrVal_1467 Int) (v_ArrVal_1470 (Array Int Int))) (let ((.cse0 (* |v_t_funThread2of2ForFork0_~i~0#1_73| 28))) (or (< (select (select (store (store |c_#memory_int| |c_~#a~0.base| (store (select |c_#memory_int| |c_~#a~0.base|) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|) v_ArrVal_1467)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1470) |c_~#a~0.base|) (+ .cse0 |c_~#a~0.offset|)) 2147483647) (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1468) |c_~#a~0.base|) (+ .cse0 |c_~#a~0.offset| 4)) 0))))) is different from false [2023-08-30 10:25:16,844 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:25:16,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-30 10:25:16,859 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:25:16,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 38 [2023-08-30 10:25:16,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-30 10:25:22,108 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:25:22,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955026829] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:25:22,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:25:22,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8] total 21 [2023-08-30 10:25:22,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867174544] [2023-08-30 10:25:22,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:25:22,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-30 10:25:22,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:22,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-30 10:25:22,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=339, Unknown=12, NotChecked=40, Total=506 [2023-08-30 10:25:22,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 548 [2023-08-30 10:25:22,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 165 transitions, 2028 flow. Second operand has 23 states, 23 states have (on average 176.6086956521739) internal successors, (4062), 23 states have internal predecessors, (4062), 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) [2023-08-30 10:25:22,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:22,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 548 [2023-08-30 10:25:22,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:23,483 INFO L130 PetriNetUnfolder]: 876/2090 cut-off events. [2023-08-30 10:25:23,484 INFO L131 PetriNetUnfolder]: For 14509/14517 co-relation queries the response was YES. [2023-08-30 10:25:23,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11012 conditions, 2090 events. 876/2090 cut-off events. For 14509/14517 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14950 event pairs, 221 based on Foata normal form. 2/2092 useless extension candidates. Maximal degree in co-relation 10953. Up to 1149 conditions per place. [2023-08-30 10:25:23,497 INFO L137 encePairwiseOnDemand]: 536/548 looper letters, 165 selfloop transitions, 54 changer transitions 0/225 dead transitions. [2023-08-30 10:25:23,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 225 transitions, 2995 flow [2023-08-30 10:25:23,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 10:25:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 10:25:23,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1832 transitions. [2023-08-30 10:25:23,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343065693430657 [2023-08-30 10:25:23,500 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1832 transitions. [2023-08-30 10:25:23,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1832 transitions. [2023-08-30 10:25:23,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:25:23,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1832 transitions. [2023-08-30 10:25:23,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 183.2) internal successors, (1832), 10 states have internal predecessors, (1832), 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) [2023-08-30 10:25:23,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 548.0) internal successors, (6028), 11 states have internal predecessors, (6028), 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) [2023-08-30 10:25:23,504 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 548.0) internal successors, (6028), 11 states have internal predecessors, (6028), 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) [2023-08-30 10:25:23,504 INFO L175 Difference]: Start difference. First operand has 168 places, 165 transitions, 2028 flow. Second operand 10 states and 1832 transitions. [2023-08-30 10:25:23,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 225 transitions, 2995 flow [2023-08-30 10:25:23,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 225 transitions, 2946 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 10:25:23,546 INFO L231 Difference]: Finished difference. Result has 174 places, 179 transitions, 2300 flow [2023-08-30 10:25:23,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2300, PETRI_PLACES=174, PETRI_TRANSITIONS=179} [2023-08-30 10:25:23,547 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 91 predicate places. [2023-08-30 10:25:23,547 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 179 transitions, 2300 flow [2023-08-30 10:25:23,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 176.6086956521739) internal successors, (4062), 23 states have internal predecessors, (4062), 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) [2023-08-30 10:25:23,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:25:23,548 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:25:23,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 10:25:23,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:23,751 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:25:23,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:25:23,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1020027575, now seen corresponding path program 1 times [2023-08-30 10:25:23,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:25:23,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884102300] [2023-08-30 10:25:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:23,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:25:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:25:24,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:25:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884102300] [2023-08-30 10:25:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884102300] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:25:24,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518678679] [2023-08-30 10:25:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:25:24,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:25:24,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:25:24,140 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:25:24,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 10:25:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:25:24,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-30 10:25:24,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:25:24,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:25:24,380 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:25:24,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:25:24,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:25:24,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-30 10:25:24,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:24,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-30 10:25:24,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:25:24,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:25:24,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-30 10:25:24,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 10:25:24,685 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:25:24,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-30 10:25:24,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2023-08-30 10:25:24,806 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:25:24,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:25:24,940 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int)) (|v_t_funThread2of2ForFork0_~i~0#1_75| Int) (v_ArrVal_1571 Int)) (let ((.cse0 (* |v_t_funThread2of2ForFork0_~i~0#1_75| 28))) (or (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1568) |c_~#a~0.base|) (+ .cse0 |c_~#a~0.offset| 4)) 0)) (< 0 (+ (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1569) |c_~#a~0.base|) (+ .cse0 |c_~#a~0.offset|) v_ArrVal_1571) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|)) 2147483648))))) is different from false [2023-08-30 10:25:25,077 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:25:25,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-30 10:25:25,088 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:25:25,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 38 [2023-08-30 10:25:25,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-30 10:25:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:25:32,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518678679] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:25:32,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:25:32,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 26 [2023-08-30 10:25:32,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946762120] [2023-08-30 10:25:32,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:25:32,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 10:25:32,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:25:32,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 10:25:32,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=581, Unknown=6, NotChecked=50, Total=756 [2023-08-30 10:25:32,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 548 [2023-08-30 10:25:32,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 179 transitions, 2300 flow. Second operand has 28 states, 28 states have (on average 174.35714285714286) internal successors, (4882), 28 states have internal predecessors, (4882), 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) [2023-08-30 10:25:32,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:25:32,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 548 [2023-08-30 10:25:32,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:25:42,064 WARN L222 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 89 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:25:50,221 WARN L222 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 87 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:25:58,881 WARN L222 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 137 DAG size of output: 99 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:26:11,339 WARN L222 SmtUtils]: Spent 12.28s on a formula simplification. DAG size of input: 114 DAG size of output: 111 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:26:13,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:26:21,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:26:23,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:26:25,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:26:27,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:26:30,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:26:38,169 WARN L222 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:26:46,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:26:48,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:26:57,805 WARN L222 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:26:59,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:02,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:04,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:06,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:08,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:10,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:12,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:27,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:35,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:37,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:39,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:41,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:43,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:45,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:47,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:49,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:51,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:53,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:56,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:58,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:27:59,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:01,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:14,306 WARN L222 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 106 DAG size of output: 82 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:28:16,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:18,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:20,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:35,185 WARN L222 SmtUtils]: Spent 14.24s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:28:37,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:39,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:41,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:43,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:44,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:28:51,492 WARN L222 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 154 DAG size of output: 106 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:29:01,824 WARN L222 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 85 DAG size of output: 72 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:29:08,292 WARN L222 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 118 DAG size of output: 76 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:29:08,436 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_~#a~0.base|)) (.cse1 (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|))) (and (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int)) (|v_t_funThread2of2ForFork0_~i~0#1_75| Int) (v_ArrVal_1571 Int)) (let ((.cse0 (* |v_t_funThread2of2ForFork0_~i~0#1_75| 28))) (or (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1568) |c_~#a~0.base|) (+ .cse0 |c_~#a~0.offset| 4)) 0)) (< 0 (+ (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1569) |c_~#a~0.base|) (+ .cse0 |c_~#a~0.offset|) v_ArrVal_1571) .cse1) 2147483648))))) (forall ((|v_t_funThread2of2ForFork0_~i~0#1_75| Int) (v_ArrVal_1571 Int)) (let ((.cse3 (* |v_t_funThread2of2ForFork0_~i~0#1_75| 28))) (or (< 0 (+ (select (store .cse2 (+ .cse3 |c_~#a~0.offset|) v_ArrVal_1571) .cse1) 2147483648)) (not (= (select (select |c_#pthreadsMutex| |c_~#a~0.base|) (+ .cse3 |c_~#a~0.offset| 4)) 0))))) (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int)) (|v_t_funThread2of2ForFork0_~i~0#1_75| Int) (v_ArrVal_1571 Int) (v_ArrVal_1567 Int)) (let ((.cse4 (* |v_t_funThread2of2ForFork0_~i~0#1_75| 28))) (or (< v_ArrVal_1567 (+ |c_t_funThread1of2ForFork0_#t~post36#1| 1)) (< 0 (+ (select (store (select (store (store |c_#memory_int| |c_~#a~0.base| (store .cse2 .cse1 v_ArrVal_1567)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1569) |c_~#a~0.base|) (+ .cse4 |c_~#a~0.offset|) v_ArrVal_1571) .cse1) 2147483648)) (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1568) |c_~#a~0.base|) (+ .cse4 |c_~#a~0.offset| 4)) 0))))))) is different from false [2023-08-30 10:29:10,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:29:12,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:29:26,492 WARN L222 SmtUtils]: Spent 10.11s on a formula simplification. DAG size of input: 83 DAG size of output: 70 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:29:39,236 WARN L222 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 116 DAG size of output: 77 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:29:42,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:29:54,443 WARN L222 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:29:56,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:29:58,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:30:11,427 WARN L222 SmtUtils]: Spent 10.77s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:30:13,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:30:20,218 WARN L222 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 127 DAG size of output: 82 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:30:22,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:30:34,985 WARN L222 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 64 DAG size of output: 58 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:30:37,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:30:38,256 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_int| |c_~#a~0.base|)) (.cse1 (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|))) (and (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int)) (|v_t_funThread2of2ForFork0_~i~0#1_75| Int) (v_ArrVal_1571 Int)) (let ((.cse0 (* |v_t_funThread2of2ForFork0_~i~0#1_75| 28))) (or (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1568) |c_~#a~0.base|) (+ .cse0 |c_~#a~0.offset| 4)) 0)) (< 0 (+ (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1569) |c_~#a~0.base|) (+ .cse0 |c_~#a~0.offset|) v_ArrVal_1571) .cse1) 2147483648))))) (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int)) (|v_t_funThread2of2ForFork0_~i~0#1_75| Int) (v_ArrVal_1571 Int) (v_ArrVal_1567 Int)) (let ((.cse3 (* |v_t_funThread2of2ForFork0_~i~0#1_75| 28))) (or (< 0 (+ (select (store (select (store (store |c_#memory_int| |c_~#a~0.base| (store .cse2 .cse1 v_ArrVal_1567)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1569) |c_~#a~0.base|) (+ .cse3 |c_~#a~0.offset|) v_ArrVal_1571) .cse1) 2147483648)) (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1568) |c_~#a~0.base|) (+ .cse3 |c_~#a~0.offset| 4)) 0)) (< v_ArrVal_1567 (+ (select .cse2 .cse1) 1))))) (forall ((v_ArrVal_1569 (Array Int Int)) (v_ArrVal_1568 (Array Int Int)) (|v_t_funThread2of2ForFork0_~i~0#1_75| Int) (v_ArrVal_1571 Int) (v_ArrVal_1567 Int)) (let ((.cse4 (* |v_t_funThread2of2ForFork0_~i~0#1_75| 28))) (or (< v_ArrVal_1567 (+ |c_t_funThread1of2ForFork0_#t~post36#1| 1)) (< 0 (+ (select (store (select (store (store |c_#memory_int| |c_~#a~0.base| (store .cse2 .cse1 v_ArrVal_1567)) |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1569) |c_~#a~0.base|) (+ .cse4 |c_~#a~0.offset|) v_ArrVal_1571) .cse1) 2147483648)) (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1568) |c_~#a~0.base|) (+ .cse4 |c_~#a~0.offset| 4)) 0))))) (forall ((v_ArrVal_1569 (Array Int Int)) (|v_t_funThread2of2ForFork0_~i~0#1_75| Int) (v_ArrVal_1571 Int)) (let ((.cse5 (* |v_t_funThread2of2ForFork0_~i~0#1_75| 28))) (or (not (= (select (select |c_#pthreadsMutex| |c_~#a~0.base|) (+ .cse5 |c_~#a~0.offset| 4)) 0)) (< 0 (+ (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1569) |c_~#a~0.base|) (+ .cse5 |c_~#a~0.offset|) v_ArrVal_1571) .cse1) 2147483648))))))) is different from false [2023-08-30 10:30:40,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:30:42,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:30:44,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:30:46,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:01,631 WARN L222 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 62 DAG size of output: 56 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 10:31:03,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:08,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:10,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:12,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:14,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:16,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:18,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:20,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:22,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:31:23,016 INFO L130 PetriNetUnfolder]: 1275/3128 cut-off events. [2023-08-30 10:31:23,016 INFO L131 PetriNetUnfolder]: For 23347/23347 co-relation queries the response was YES. [2023-08-30 10:31:23,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16873 conditions, 3128 events. 1275/3128 cut-off events. For 23347/23347 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 25050 event pairs, 168 based on Foata normal form. 54/3182 useless extension candidates. Maximal degree in co-relation 16811. Up to 698 conditions per place. [2023-08-30 10:31:23,042 INFO L137 encePairwiseOnDemand]: 517/548 looper letters, 266 selfloop transitions, 208 changer transitions 47/527 dead transitions. [2023-08-30 10:31:23,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 527 transitions, 6853 flow [2023-08-30 10:31:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-30 10:31:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-30 10:31:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 10341 transitions. [2023-08-30 10:31:23,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3253523785552479 [2023-08-30 10:31:23,055 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 10341 transitions. [2023-08-30 10:31:23,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 10341 transitions. [2023-08-30 10:31:23,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:31:23,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 10341 transitions. [2023-08-30 10:31:23,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 178.29310344827587) internal successors, (10341), 58 states have internal predecessors, (10341), 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) [2023-08-30 10:31:23,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 548.0) internal successors, (32332), 59 states have internal predecessors, (32332), 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) [2023-08-30 10:31:23,102 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 548.0) internal successors, (32332), 59 states have internal predecessors, (32332), 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) [2023-08-30 10:31:23,103 INFO L175 Difference]: Start difference. First operand has 174 places, 179 transitions, 2300 flow. Second operand 58 states and 10341 transitions. [2023-08-30 10:31:23,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 527 transitions, 6853 flow [2023-08-30 10:31:23,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 527 transitions, 6742 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-08-30 10:31:23,202 INFO L231 Difference]: Finished difference. Result has 261 places, 313 transitions, 4901 flow [2023-08-30 10:31:23,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=4901, PETRI_PLACES=261, PETRI_TRANSITIONS=313} [2023-08-30 10:31:23,202 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 178 predicate places. [2023-08-30 10:31:23,202 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 313 transitions, 4901 flow [2023-08-30 10:31:23,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 174.35714285714286) internal successors, (4882), 28 states have internal predecessors, (4882), 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) [2023-08-30 10:31:23,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:31:23,203 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:31:23,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-30 10:31:23,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-30 10:31:23,403 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:31:23,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:31:23,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1625506146, now seen corresponding path program 1 times [2023-08-30 10:31:23,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:31:23,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031128816] [2023-08-30 10:31:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:31:23,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:31:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:31:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:31:24,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:31:24,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031128816] [2023-08-30 10:31:24,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031128816] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:31:24,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991279833] [2023-08-30 10:31:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:31:24,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:31:24,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:31:24,825 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:31:24,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 10:31:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:31:24,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 10:31:24,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:31:24,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:31:25,048 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:31:25,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:31:25,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:31:25,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:31:25,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-30 10:31:25,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2023-08-30 10:31:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:31:25,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:31:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:31:25,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991279833] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:31:25,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:31:25,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 7] total 22 [2023-08-30 10:31:25,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104435232] [2023-08-30 10:31:25,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:31:25,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 10:31:25,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:31:25,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 10:31:25,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=429, Unknown=4, NotChecked=0, Total=552 [2023-08-30 10:31:29,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 548 [2023-08-30 10:31:29,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 313 transitions, 4901 flow. Second operand has 24 states, 24 states have (on average 213.5) internal successors, (5124), 24 states have internal predecessors, (5124), 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) [2023-08-30 10:31:29,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:31:29,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 548 [2023-08-30 10:31:29,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:31:32,866 INFO L130 PetriNetUnfolder]: 1296/3256 cut-off events. [2023-08-30 10:31:32,866 INFO L131 PetriNetUnfolder]: For 42912/42987 co-relation queries the response was YES. [2023-08-30 10:31:32,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21789 conditions, 3256 events. 1296/3256 cut-off events. For 42912/42987 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 27104 event pairs, 274 based on Foata normal form. 67/3313 useless extension candidates. Maximal degree in co-relation 21694. Up to 1292 conditions per place. [2023-08-30 10:31:32,892 INFO L137 encePairwiseOnDemand]: 535/548 looper letters, 323 selfloop transitions, 123 changer transitions 0/461 dead transitions. [2023-08-30 10:31:32,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 461 transitions, 7613 flow [2023-08-30 10:31:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 10:31:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 10:31:32,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5024 transitions. [2023-08-30 10:31:32,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39860361789907967 [2023-08-30 10:31:32,897 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5024 transitions. [2023-08-30 10:31:32,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5024 transitions. [2023-08-30 10:31:32,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:31:32,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5024 transitions. [2023-08-30 10:31:32,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 218.43478260869566) internal successors, (5024), 23 states have internal predecessors, (5024), 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) [2023-08-30 10:31:32,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 548.0) internal successors, (13152), 24 states have internal predecessors, (13152), 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) [2023-08-30 10:31:32,913 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 548.0) internal successors, (13152), 24 states have internal predecessors, (13152), 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) [2023-08-30 10:31:32,913 INFO L175 Difference]: Start difference. First operand has 261 places, 313 transitions, 4901 flow. Second operand 23 states and 5024 transitions. [2023-08-30 10:31:32,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 461 transitions, 7613 flow [2023-08-30 10:31:33,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 461 transitions, 7296 flow, removed 102 selfloop flow, removed 9 redundant places. [2023-08-30 10:31:33,098 INFO L231 Difference]: Finished difference. Result has 273 places, 361 transitions, 5726 flow [2023-08-30 10:31:33,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=4623, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5726, PETRI_PLACES=273, PETRI_TRANSITIONS=361} [2023-08-30 10:31:33,099 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 190 predicate places. [2023-08-30 10:31:33,099 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 361 transitions, 5726 flow [2023-08-30 10:31:33,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 213.5) internal successors, (5124), 24 states have internal predecessors, (5124), 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) [2023-08-30 10:31:33,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:31:33,100 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:31:33,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-30 10:31:33,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-30 10:31:33,308 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:31:33,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:31:33,308 INFO L85 PathProgramCache]: Analyzing trace with hash 48379459, now seen corresponding path program 1 times [2023-08-30 10:31:33,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:31:33,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109159558] [2023-08-30 10:31:33,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:31:33,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:31:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:31:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:31:33,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:31:33,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109159558] [2023-08-30 10:31:33,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109159558] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:31:33,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801909385] [2023-08-30 10:31:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:31:33,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:31:33,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:31:33,657 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:31:33,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-30 10:31:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:31:33,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-30 10:31:33,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:31:33,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:31:33,954 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:31:33,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:31:33,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:31:34,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-30 10:31:34,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:31:34,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-30 10:31:34,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:31:34,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-30 10:31:34,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:31:34,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-30 10:31:34,252 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:31:34,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-30 10:31:34,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-08-30 10:31:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:31:34,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:31:34,554 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1767 (Array Int Int)) (v_ArrVal_1764 (Array Int Int)) (|v_t_funThread2of2ForFork0_~i~0#1_79| Int) (v_ArrVal_1766 Int)) (let ((.cse0 (* |v_t_funThread2of2ForFork0_~i~0#1_79| 28))) (or (<= 0 (+ (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1764) |c_~#a~0.base|) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|) v_ArrVal_1766) (+ .cse0 |c_~#a~0.offset|)) 2147483648)) (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1767) |c_~#a~0.base|) (+ .cse0 |c_~#a~0.offset| 4)) 0))))) is different from false [2023-08-30 10:31:34,610 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:31:34,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-30 10:31:34,623 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 10:31:34,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 38 [2023-08-30 10:31:34,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-08-30 10:31:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 1 not checked. [2023-08-30 10:31:38,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801909385] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:31:38,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:31:38,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2023-08-30 10:31:38,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773420581] [2023-08-30 10:31:38,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:31:38,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 10:31:38,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:31:38,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 10:31:38,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=419, Unknown=4, NotChecked=44, Total=600 [2023-08-30 10:31:38,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 548 [2023-08-30 10:31:38,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 361 transitions, 5726 flow. Second operand has 25 states, 25 states have (on average 174.36) internal successors, (4359), 25 states have internal predecessors, (4359), 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) [2023-08-30 10:31:38,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:31:38,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 548 [2023-08-30 10:31:38,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:31:58,047 INFO L130 PetriNetUnfolder]: 1620/3924 cut-off events. [2023-08-30 10:31:58,048 INFO L131 PetriNetUnfolder]: For 53986/53986 co-relation queries the response was YES. [2023-08-30 10:31:58,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27592 conditions, 3924 events. 1620/3924 cut-off events. For 53986/53986 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 33138 event pairs, 203 based on Foata normal form. 27/3951 useless extension candidates. Maximal degree in co-relation 27495. Up to 1218 conditions per place. [2023-08-30 10:31:58,090 INFO L137 encePairwiseOnDemand]: 524/548 looper letters, 290 selfloop transitions, 327 changer transitions 20/643 dead transitions. [2023-08-30 10:31:58,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 643 transitions, 10650 flow [2023-08-30 10:31:58,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-08-30 10:31:58,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-08-30 10:31:58,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 10139 transitions. [2023-08-30 10:31:58,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32459341785119733 [2023-08-30 10:31:58,100 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 10139 transitions. [2023-08-30 10:31:58,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 10139 transitions. [2023-08-30 10:31:58,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:31:58,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 10139 transitions. [2023-08-30 10:31:58,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 177.87719298245614) internal successors, (10139), 57 states have internal predecessors, (10139), 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) [2023-08-30 10:31:58,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 548.0) internal successors, (31784), 58 states have internal predecessors, (31784), 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) [2023-08-30 10:31:58,136 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 548.0) internal successors, (31784), 58 states have internal predecessors, (31784), 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) [2023-08-30 10:31:58,136 INFO L175 Difference]: Start difference. First operand has 273 places, 361 transitions, 5726 flow. Second operand 57 states and 10139 transitions. [2023-08-30 10:31:58,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 643 transitions, 10650 flow [2023-08-30 10:31:58,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 643 transitions, 10471 flow, removed 64 selfloop flow, removed 4 redundant places. [2023-08-30 10:31:58,366 INFO L231 Difference]: Finished difference. Result has 348 places, 486 transitions, 8576 flow [2023-08-30 10:31:58,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=5546, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=8576, PETRI_PLACES=348, PETRI_TRANSITIONS=486} [2023-08-30 10:31:58,367 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 265 predicate places. [2023-08-30 10:31:58,367 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 486 transitions, 8576 flow [2023-08-30 10:31:58,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 174.36) internal successors, (4359), 25 states have internal predecessors, (4359), 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) [2023-08-30 10:31:58,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:31:58,368 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:31:58,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-30 10:31:58,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-30 10:31:58,568 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:31:58,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:31:58,569 INFO L85 PathProgramCache]: Analyzing trace with hash -854205548, now seen corresponding path program 1 times [2023-08-30 10:31:58,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:31:58,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644118277] [2023-08-30 10:31:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:31:58,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:31:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:31:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-30 10:31:58,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:31:58,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644118277] [2023-08-30 10:31:58,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644118277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 10:31:58,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 10:31:58,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 10:31:58,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723129593] [2023-08-30 10:31:58,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 10:31:58,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 10:31:58,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:31:58,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 10:31:58,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 10:31:58,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 548 [2023-08-30 10:31:58,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 486 transitions, 8576 flow. Second operand has 5 states, 5 states have (on average 234.6) internal successors, (1173), 5 states have internal predecessors, (1173), 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) [2023-08-30 10:31:58,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:31:58,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 548 [2023-08-30 10:31:58,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:31:59,981 INFO L130 PetriNetUnfolder]: 1431/3635 cut-off events. [2023-08-30 10:31:59,982 INFO L131 PetriNetUnfolder]: For 66944/67020 co-relation queries the response was YES. [2023-08-30 10:32:00,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28650 conditions, 3635 events. 1431/3635 cut-off events. For 66944/67020 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 31401 event pairs, 511 based on Foata normal form. 26/3647 useless extension candidates. Maximal degree in co-relation 28530. Up to 2332 conditions per place. [2023-08-30 10:32:00,025 INFO L137 encePairwiseOnDemand]: 540/548 looper letters, 369 selfloop transitions, 114 changer transitions 1/503 dead transitions. [2023-08-30 10:32:00,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 503 transitions, 9782 flow [2023-08-30 10:32:00,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 10:32:00,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 10:32:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 976 transitions. [2023-08-30 10:32:00,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44525547445255476 [2023-08-30 10:32:00,026 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 976 transitions. [2023-08-30 10:32:00,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 976 transitions. [2023-08-30 10:32:00,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:32:00,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 976 transitions. [2023-08-30 10:32:00,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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) [2023-08-30 10:32:00,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 548.0) internal successors, (2740), 5 states have internal predecessors, (2740), 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) [2023-08-30 10:32:00,028 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 548.0) internal successors, (2740), 5 states have internal predecessors, (2740), 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) [2023-08-30 10:32:00,028 INFO L175 Difference]: Start difference. First operand has 348 places, 486 transitions, 8576 flow. Second operand 4 states and 976 transitions. [2023-08-30 10:32:00,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 503 transitions, 9782 flow [2023-08-30 10:32:00,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 503 transitions, 9130 flow, removed 190 selfloop flow, removed 14 redundant places. [2023-08-30 10:32:00,412 INFO L231 Difference]: Finished difference. Result has 339 places, 487 transitions, 8405 flow [2023-08-30 10:32:00,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=7855, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=8405, PETRI_PLACES=339, PETRI_TRANSITIONS=487} [2023-08-30 10:32:00,413 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 256 predicate places. [2023-08-30 10:32:00,413 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 487 transitions, 8405 flow [2023-08-30 10:32:00,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 234.6) internal successors, (1173), 5 states have internal predecessors, (1173), 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) [2023-08-30 10:32:00,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:32:00,414 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:32:00,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 10:32:00,414 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:32:00,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:32:00,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1926035627, now seen corresponding path program 2 times [2023-08-30 10:32:00,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:32:00,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336996369] [2023-08-30 10:32:00,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:32:00,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:32:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:32:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:32:00,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:32:00,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336996369] [2023-08-30 10:32:00,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336996369] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:32:00,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614766744] [2023-08-30 10:32:00,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:32:00,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:32:00,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:32:00,790 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:32:00,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-30 10:32:00,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:32:00,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:32:00,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 10:32:00,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:32:00,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:32:01,061 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:32:01,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:32:01,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:32:01,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:32:01,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2023-08-30 10:32:01,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-08-30 10:32:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:32:01,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:32:04,232 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:32:04,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614766744] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:32:04,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:32:04,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-30 10:32:04,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655274710] [2023-08-30 10:32:04,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:32:04,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 10:32:04,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:32:04,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 10:32:04,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=294, Unknown=2, NotChecked=0, Total=380 [2023-08-30 10:32:06,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:08,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:10,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:12,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:14,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:16,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:18,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:20,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:22,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:24,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:26,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:28,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:30,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:31,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:34,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:36,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:37,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:37,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 548 [2023-08-30 10:32:37,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 487 transitions, 8405 flow. Second operand has 20 states, 20 states have (on average 197.35) internal successors, (3947), 20 states have internal predecessors, (3947), 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) [2023-08-30 10:32:37,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:32:37,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 548 [2023-08-30 10:32:37,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:32:40,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:32:42,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:32:47,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:52,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:54,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:56,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:32:58,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:33:00,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:33:02,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:33:04,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 10:33:06,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:33:09,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:33:13,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:33:14,228 INFO L130 PetriNetUnfolder]: 1508/3786 cut-off events. [2023-08-30 10:33:14,229 INFO L131 PetriNetUnfolder]: For 69158/69232 co-relation queries the response was YES. [2023-08-30 10:33:14,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29485 conditions, 3786 events. 1508/3786 cut-off events. For 69158/69232 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 32589 event pairs, 375 based on Foata normal form. 21/3793 useless extension candidates. Maximal degree in co-relation 29370. Up to 2286 conditions per place. [2023-08-30 10:33:14,269 INFO L137 encePairwiseOnDemand]: 532/548 looper letters, 383 selfloop transitions, 159 changer transitions 3/564 dead transitions. [2023-08-30 10:33:14,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 564 transitions, 10682 flow [2023-08-30 10:33:14,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 10:33:14,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 10:33:14,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3632 transitions. [2023-08-30 10:33:14,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682076236820762 [2023-08-30 10:33:14,274 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3632 transitions. [2023-08-30 10:33:14,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3632 transitions. [2023-08-30 10:33:14,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:33:14,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3632 transitions. [2023-08-30 10:33:14,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 201.77777777777777) internal successors, (3632), 18 states have internal predecessors, (3632), 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) [2023-08-30 10:33:14,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 548.0) internal successors, (10412), 19 states have internal predecessors, (10412), 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) [2023-08-30 10:33:14,282 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 548.0) internal successors, (10412), 19 states have internal predecessors, (10412), 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) [2023-08-30 10:33:14,282 INFO L175 Difference]: Start difference. First operand has 339 places, 487 transitions, 8405 flow. Second operand 18 states and 3632 transitions. [2023-08-30 10:33:14,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 564 transitions, 10682 flow [2023-08-30 10:33:14,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 564 transitions, 10664 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 10:33:14,652 INFO L231 Difference]: Finished difference. Result has 362 places, 521 transitions, 9604 flow [2023-08-30 10:33:14,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=8329, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9604, PETRI_PLACES=362, PETRI_TRANSITIONS=521} [2023-08-30 10:33:14,653 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 279 predicate places. [2023-08-30 10:33:14,653 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 521 transitions, 9604 flow [2023-08-30 10:33:14,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 197.35) internal successors, (3947), 20 states have internal predecessors, (3947), 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) [2023-08-30 10:33:14,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:33:14,654 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:33:14,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-30 10:33:14,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:33:14,854 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:33:14,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:33:14,855 INFO L85 PathProgramCache]: Analyzing trace with hash 435407452, now seen corresponding path program 2 times [2023-08-30 10:33:14,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:33:14,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903099304] [2023-08-30 10:33:14,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:33:14,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:33:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:33:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:33:15,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:33:15,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903099304] [2023-08-30 10:33:15,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903099304] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:33:15,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098781095] [2023-08-30 10:33:15,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 10:33:15,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:33:15,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:33:15,277 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:33:15,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-30 10:33:15,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 10:33:15,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:33:15,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 10:33:15,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:33:15,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:33:15,505 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:33:15,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:33:15,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:33:15,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-30 10:33:15,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 40 [2023-08-30 10:33:15,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 40 [2023-08-30 10:33:15,721 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:33:15,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:33:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-30 10:33:16,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098781095] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:33:16,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:33:16,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 22 [2023-08-30 10:33:16,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307743555] [2023-08-30 10:33:16,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:33:16,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 10:33:16,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:33:16,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 10:33:16,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=428, Unknown=10, NotChecked=0, Total=552 [2023-08-30 10:33:18,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 548 [2023-08-30 10:33:18,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 521 transitions, 9604 flow. Second operand has 24 states, 24 states have (on average 193.41666666666666) internal successors, (4642), 24 states have internal predecessors, (4642), 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) [2023-08-30 10:33:18,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:33:18,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 548 [2023-08-30 10:33:18,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:33:20,033 INFO L130 PetriNetUnfolder]: 1486/3743 cut-off events. [2023-08-30 10:33:20,033 INFO L131 PetriNetUnfolder]: For 74363/74428 co-relation queries the response was YES. [2023-08-30 10:33:20,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29779 conditions, 3743 events. 1486/3743 cut-off events. For 74363/74428 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 32195 event pairs, 241 based on Foata normal form. 37/3769 useless extension candidates. Maximal degree in co-relation 29657. Up to 1388 conditions per place. [2023-08-30 10:33:20,074 INFO L137 encePairwiseOnDemand]: 537/548 looper letters, 386 selfloop transitions, 163 changer transitions 4/572 dead transitions. [2023-08-30 10:33:20,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 572 transitions, 11378 flow [2023-08-30 10:33:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 10:33:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 10:33:20,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2979 transitions. [2023-08-30 10:33:20,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3624087591240876 [2023-08-30 10:33:20,077 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2979 transitions. [2023-08-30 10:33:20,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2979 transitions. [2023-08-30 10:33:20,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:33:20,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2979 transitions. [2023-08-30 10:33:20,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 198.6) internal successors, (2979), 15 states have internal predecessors, (2979), 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) [2023-08-30 10:33:20,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 548.0) internal successors, (8768), 16 states have internal predecessors, (8768), 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) [2023-08-30 10:33:20,083 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 548.0) internal successors, (8768), 16 states have internal predecessors, (8768), 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) [2023-08-30 10:33:20,083 INFO L175 Difference]: Start difference. First operand has 362 places, 521 transitions, 9604 flow. Second operand 15 states and 2979 transitions. [2023-08-30 10:33:20,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 572 transitions, 11378 flow [2023-08-30 10:33:20,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 572 transitions, 11083 flow, removed 46 selfloop flow, removed 11 redundant places. [2023-08-30 10:33:20,524 INFO L231 Difference]: Finished difference. Result has 360 places, 511 transitions, 9488 flow [2023-08-30 10:33:20,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=9187, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9488, PETRI_PLACES=360, PETRI_TRANSITIONS=511} [2023-08-30 10:33:20,525 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 277 predicate places. [2023-08-30 10:33:20,525 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 511 transitions, 9488 flow [2023-08-30 10:33:20,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 193.41666666666666) internal successors, (4642), 24 states have internal predecessors, (4642), 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) [2023-08-30 10:33:20,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:33:20,526 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:33:20,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-30 10:33:20,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:33:20,727 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:33:20,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:33:20,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1442262734, now seen corresponding path program 1 times [2023-08-30 10:33:20,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:33:20,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214359039] [2023-08-30 10:33:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:33:20,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:33:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:33:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:33:21,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:33:21,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214359039] [2023-08-30 10:33:21,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214359039] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:33:21,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915078634] [2023-08-30 10:33:21,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:33:21,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:33:21,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:33:21,065 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:33:21,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-30 10:33:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:33:21,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-30 10:33:21,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:33:21,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:33:21,359 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:33:21,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:33:21,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:33:21,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:33:21,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 10:33:21,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:33:21,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2023-08-30 10:33:21,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2023-08-30 10:33:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:33:21,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:33:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:33:21,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915078634] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:33:21,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:33:21,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 19 [2023-08-30 10:33:21,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370059394] [2023-08-30 10:33:21,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:33:21,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 10:33:21,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:33:21,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 10:33:21,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=304, Unknown=2, NotChecked=0, Total=420 [2023-08-30 10:33:23,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 548 [2023-08-30 10:33:23,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 511 transitions, 9488 flow. Second operand has 21 states, 21 states have (on average 226.61904761904762) internal successors, (4759), 21 states have internal predecessors, (4759), 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) [2023-08-30 10:33:23,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 10:33:23,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 548 [2023-08-30 10:33:23,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 10:33:25,815 INFO L130 PetriNetUnfolder]: 1487/3759 cut-off events. [2023-08-30 10:33:25,816 INFO L131 PetriNetUnfolder]: For 74973/75066 co-relation queries the response was YES. [2023-08-30 10:33:25,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29878 conditions, 3759 events. 1487/3759 cut-off events. For 74973/75066 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 32432 event pairs, 413 based on Foata normal form. 36/3782 useless extension candidates. Maximal degree in co-relation 29761. Up to 2442 conditions per place. [2023-08-30 10:33:25,858 INFO L137 encePairwiseOnDemand]: 535/548 looper letters, 464 selfloop transitions, 81 changer transitions 1/565 dead transitions. [2023-08-30 10:33:25,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 565 transitions, 11186 flow [2023-08-30 10:33:25,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 10:33:25,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 10:33:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3683 transitions. [2023-08-30 10:33:25,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200501824817518 [2023-08-30 10:33:25,861 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3683 transitions. [2023-08-30 10:33:25,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3683 transitions. [2023-08-30 10:33:25,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 10:33:25,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3683 transitions. [2023-08-30 10:33:25,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 230.1875) internal successors, (3683), 16 states have internal predecessors, (3683), 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) [2023-08-30 10:33:25,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 548.0) internal successors, (9316), 17 states have internal predecessors, (9316), 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) [2023-08-30 10:33:25,868 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 548.0) internal successors, (9316), 17 states have internal predecessors, (9316), 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) [2023-08-30 10:33:25,868 INFO L175 Difference]: Start difference. First operand has 360 places, 511 transitions, 9488 flow. Second operand 16 states and 3683 transitions. [2023-08-30 10:33:25,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 565 transitions, 11186 flow [2023-08-30 10:33:26,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 565 transitions, 11018 flow, removed 11 selfloop flow, removed 7 redundant places. [2023-08-30 10:33:26,288 INFO L231 Difference]: Finished difference. Result has 373 places, 525 transitions, 9747 flow [2023-08-30 10:33:26,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=548, PETRI_DIFFERENCE_MINUEND_FLOW=9312, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9747, PETRI_PLACES=373, PETRI_TRANSITIONS=525} [2023-08-30 10:33:26,289 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 290 predicate places. [2023-08-30 10:33:26,289 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 525 transitions, 9747 flow [2023-08-30 10:33:26,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 226.61904761904762) internal successors, (4759), 21 states have internal predecessors, (4759), 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) [2023-08-30 10:33:26,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 10:33:26,290 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 10:33:26,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-30 10:33:26,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-30 10:33:26,490 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-30 10:33:26,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 10:33:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash 961875514, now seen corresponding path program 3 times [2023-08-30 10:33:26,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 10:33:26,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885687680] [2023-08-30 10:33:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 10:33:26,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 10:33:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 10:33:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:33:26,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 10:33:26,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885687680] [2023-08-30 10:33:26,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885687680] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 10:33:26,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29875328] [2023-08-30 10:33:26,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 10:33:26,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 10:33:26,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 10:33:26,920 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 10:33:26,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-30 10:33:27,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 10:33:27,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 10:33:27,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-30 10:33:27,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 10:33:27,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-30 10:33:27,172 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:33:27,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 10:33:27,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:33:27,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-30 10:33:27,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-30 10:33:27,273 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 10:33:27,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-30 10:33:27,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-30 10:33:27,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-08-30 10:33:27,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 29 [2023-08-30 10:33:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-08-30 10:33:27,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 10:33:28,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-08-30 10:33:28,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2023-08-30 10:33:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 2 refuted. 3 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-30 10:33:35,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29875328] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 10:33:35,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 10:33:35,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 23 [2023-08-30 10:33:35,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214294832] [2023-08-30 10:33:35,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 10:33:35,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 10:33:35,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 10:33:35,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 10:33:35,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=474, Unknown=9, NotChecked=0, Total=600 [2023-08-30 10:33:37,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 10:33:39,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Killed by 15