./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread/stack-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/pthread/stack-1.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 a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 12:34:37,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 12:34:37,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 12:34:37,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 12:34:37,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 12:34:37,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 12:34:37,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 12:34:37,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 12:34:37,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 12:34:37,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 12:34:37,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 12:34:37,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 12:34:37,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 12:34:37,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 12:34:37,083 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 12:34:37,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 12:34:37,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 12:34:37,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 12:34:37,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 12:34:37,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 12:34:37,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 12:34:37,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 12:34:37,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 12:34:37,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 12:34:37,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 12:34:37,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 12:34:37,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 12:34:37,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 12:34:37,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 12:34:37,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 12:34:37,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 12:34:37,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 12:34:37,117 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 12:34:37,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 12:34:37,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 12:34:37,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 12:34:37,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 12:34:37,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 12:34:37,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 12:34:37,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 12:34:37,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 12:34:37,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 12:34:37,157 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 12:34:37,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 12:34:37,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 12:34:37,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 12:34:37,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 12:34:37,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 12:34:37,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 12:34:37,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 12:34:37,161 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 12:34:37,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 12:34:37,162 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 12:34:37,162 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 12:34:37,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 12:34:37,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 12:34:37,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 12:34:37,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 12:34:37,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 12:34:37,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 12:34:37,163 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 12:34:37,163 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 12:34:37,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 12:34:37,164 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 12:34:37,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 12:34:37,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 12:34:37,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 12:34:37,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 12:34:37,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:34:37,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 12:34:37,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 12:34:37,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 12:34:37,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 12:34:37,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 12:34:37,166 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 12:34:37,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 12:34:37,166 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 12:34:37,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 12:34:37,167 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 12:34:37,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 12:34:37,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 12:34:37,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 12:34:37,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 12:34:37,500 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 12:34:37,500 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 12:34:37,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2023-08-30 12:34:38,779 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 12:34:39,099 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 12:34:39,100 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2023-08-30 12:34:39,128 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22bc0902a/2dd10cbcb56c4a90bb59b3eef7f0fbb4/FLAGbd46021c6 [2023-08-30 12:34:39,139 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22bc0902a/2dd10cbcb56c4a90bb59b3eef7f0fbb4 [2023-08-30 12:34:39,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 12:34:39,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 12:34:39,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 12:34:39,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 12:34:39,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 12:34:39,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:34:39" (1/1) ... [2023-08-30 12:34:39,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5570f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39, skipping insertion in model container [2023-08-30 12:34:39,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 12:34:39" (1/1) ... [2023-08-30 12:34:39,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 12:34:39,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 12:34:39,492 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] [2023-08-30 12:34:39,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:34:39,522 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 12:34:39,573 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] [2023-08-30 12:34:39,589 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 12:34:39,677 INFO L208 MainTranslator]: Completed translation [2023-08-30 12:34:39,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39 WrapperNode [2023-08-30 12:34:39,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 12:34:39,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 12:34:39,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 12:34:39,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 12:34:39,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39" (1/1) ... [2023-08-30 12:34:39,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39" (1/1) ... [2023-08-30 12:34:39,731 INFO L138 Inliner]: procedures = 277, calls = 43, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 161 [2023-08-30 12:34:39,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 12:34:39,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 12:34:39,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 12:34:39,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 12:34:39,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39" (1/1) ... [2023-08-30 12:34:39,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39" (1/1) ... [2023-08-30 12:34:39,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39" (1/1) ... [2023-08-30 12:34:39,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39" (1/1) ... [2023-08-30 12:34:39,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39" (1/1) ... [2023-08-30 12:34:39,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39" (1/1) ... [2023-08-30 12:34:39,773 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39" (1/1) ... [2023-08-30 12:34:39,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39" (1/1) ... [2023-08-30 12:34:39,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 12:34:39,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 12:34:39,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 12:34:39,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 12:34:39,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39" (1/1) ... [2023-08-30 12:34:39,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 12:34:39,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:34:39,817 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 12:34:39,837 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 12:34:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 12:34:39,851 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 12:34:39,851 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 12:34:39,852 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 12:34:39,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 12:34:39,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 12:34:39,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 12:34:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 12:34:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 12:34:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 12:34:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 12:34:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 12:34:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 12:34:39,855 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 12:34:39,981 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 12:34:39,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 12:34:40,365 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 12:34:40,373 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 12:34:40,376 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 12:34:40,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:34:40 BoogieIcfgContainer [2023-08-30 12:34:40,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 12:34:40,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 12:34:40,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 12:34:40,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 12:34:40,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 12:34:39" (1/3) ... [2023-08-30 12:34:40,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5202a96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:34:40, skipping insertion in model container [2023-08-30 12:34:40,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 12:34:39" (2/3) ... [2023-08-30 12:34:40,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5202a96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 12:34:40, skipping insertion in model container [2023-08-30 12:34:40,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:34:40" (3/3) ... [2023-08-30 12:34:40,389 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2023-08-30 12:34:40,397 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 12:34:40,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 12:34:40,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-30 12:34:40,407 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 12:34:40,541 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 12:34:40,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 169 transitions, 354 flow [2023-08-30 12:34:40,640 INFO L130 PetriNetUnfolder]: 10/167 cut-off events. [2023-08-30 12:34:40,641 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 12:34:40,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 167 events. 10/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 426 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-08-30 12:34:40,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 169 transitions, 354 flow [2023-08-30 12:34:40,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 158 transitions, 325 flow [2023-08-30 12:34:40,659 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 12:34:40,678 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 158 transitions, 325 flow [2023-08-30 12:34:40,680 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 158 transitions, 325 flow [2023-08-30 12:34:40,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 158 transitions, 325 flow [2023-08-30 12:34:40,747 INFO L130 PetriNetUnfolder]: 10/158 cut-off events. [2023-08-30 12:34:40,747 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:34:40,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 158 events. 10/158 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 363 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 125. Up to 3 conditions per place. [2023-08-30 12:34:40,753 INFO L119 LiptonReduction]: Number of co-enabled transitions 8200 [2023-08-30 12:34:44,585 INFO L134 LiptonReduction]: Checked pairs total: 11973 [2023-08-30 12:34:44,586 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-08-30 12:34:44,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 12:34:44,604 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;@40a5375b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 12:34:44,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-30 12:34:44,608 INFO L130 PetriNetUnfolder]: 1/17 cut-off events. [2023-08-30 12:34:44,609 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 12:34:44,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:44,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:44,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:44,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:44,615 INFO L85 PathProgramCache]: Analyzing trace with hash 844935299, now seen corresponding path program 1 times [2023-08-30 12:34:44,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:44,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346845703] [2023-08-30 12:34:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:44,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:44,870 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 12:34:44,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:44,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346845703] [2023-08-30 12:34:44,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346845703] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:44,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:44,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:44,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370679586] [2023-08-30 12:34:44,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:44,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:44,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:44,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:44,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:44,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 314 [2023-08-30 12:34:44,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 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 12:34:44,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:44,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 314 [2023-08-30 12:34:44,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:45,186 INFO L130 PetriNetUnfolder]: 1174/1921 cut-off events. [2023-08-30 12:34:45,187 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2023-08-30 12:34:45,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3888 conditions, 1921 events. 1174/1921 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8664 event pairs, 456 based on Foata normal form. 0/1314 useless extension candidates. Maximal degree in co-relation 3632. Up to 1295 conditions per place. [2023-08-30 12:34:45,200 INFO L137 encePairwiseOnDemand]: 307/314 looper letters, 60 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-30 12:34:45,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 64 transitions, 269 flow [2023-08-30 12:34:45,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:45,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-30 12:34:45,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5520169851380042 [2023-08-30 12:34:45,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-30 12:34:45,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-30 12:34:45,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:45,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-30 12:34:45,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 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 12:34:45,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:45,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:45,230 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 89 flow. Second operand 3 states and 520 transitions. [2023-08-30 12:34:45,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 64 transitions, 269 flow [2023-08-30 12:34:45,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 261 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 12:34:45,236 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 105 flow [2023-08-30 12:34:45,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-08-30 12:34:45,240 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-30 12:34:45,241 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 105 flow [2023-08-30 12:34:45,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 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 12:34:45,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:45,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:45,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 12:34:45,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:45,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:45,243 INFO L85 PathProgramCache]: Analyzing trace with hash -160824553, now seen corresponding path program 1 times [2023-08-30 12:34:45,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:45,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314575994] [2023-08-30 12:34:45,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:45,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:45,349 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 12:34:45,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:45,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314575994] [2023-08-30 12:34:45,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314575994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:45,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:45,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:45,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973498037] [2023-08-30 12:34:45,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:45,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:45,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:45,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:45,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:45,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 314 [2023-08-30 12:34:45,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 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 12:34:45,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:45,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 314 [2023-08-30 12:34:45,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:45,669 INFO L130 PetriNetUnfolder]: 1731/2926 cut-off events. [2023-08-30 12:34:45,669 INFO L131 PetriNetUnfolder]: For 188/188 co-relation queries the response was YES. [2023-08-30 12:34:45,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6180 conditions, 2926 events. 1731/2926 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 15020 event pairs, 883 based on Foata normal form. 0/2350 useless extension candidates. Maximal degree in co-relation 5548. Up to 1779 conditions per place. [2023-08-30 12:34:45,700 INFO L137 encePairwiseOnDemand]: 309/314 looper letters, 70 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-30 12:34:45,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 73 transitions, 330 flow [2023-08-30 12:34:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-08-30 12:34:45,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679405520169851 [2023-08-30 12:34:45,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-08-30 12:34:45,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-08-30 12:34:45,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:45,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-08-30 12:34:45,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 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 12:34:45,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:45,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:45,712 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 105 flow. Second operand 3 states and 535 transitions. [2023-08-30 12:34:45,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 73 transitions, 330 flow [2023-08-30 12:34:45,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 73 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:45,716 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 118 flow [2023-08-30 12:34:45,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-08-30 12:34:45,717 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2023-08-30 12:34:45,717 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 118 flow [2023-08-30 12:34:45,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 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 12:34:45,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:45,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:45,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 12:34:45,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:45,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:45,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1061347061, now seen corresponding path program 1 times [2023-08-30 12:34:45,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:45,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602573533] [2023-08-30 12:34:45,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:45,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:45,786 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 12:34:45,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:45,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602573533] [2023-08-30 12:34:45,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602573533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:45,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:45,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:45,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377910108] [2023-08-30 12:34:45,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:45,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:45,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:45,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:45,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:45,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 314 [2023-08-30 12:34:45,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 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 12:34:45,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:45,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 314 [2023-08-30 12:34:45,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:46,143 INFO L130 PetriNetUnfolder]: 2246/3651 cut-off events. [2023-08-30 12:34:46,144 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2023-08-30 12:34:46,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8435 conditions, 3651 events. 2246/3651 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 20134 event pairs, 1026 based on Foata normal form. 0/2997 useless extension candidates. Maximal degree in co-relation 6322. Up to 2950 conditions per place. [2023-08-30 12:34:46,163 INFO L137 encePairwiseOnDemand]: 309/314 looper letters, 68 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-30 12:34:46,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 71 transitions, 338 flow [2023-08-30 12:34:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:46,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:46,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2023-08-30 12:34:46,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564755838641189 [2023-08-30 12:34:46,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2023-08-30 12:34:46,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2023-08-30 12:34:46,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:46,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2023-08-30 12:34:46,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 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 12:34:46,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:46,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:46,170 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 118 flow. Second operand 3 states and 532 transitions. [2023-08-30 12:34:46,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 71 transitions, 338 flow [2023-08-30 12:34:46,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:46,173 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 132 flow [2023-08-30 12:34:46,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 12:34:46,173 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 12:34:46,174 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 132 flow [2023-08-30 12:34:46,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 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 12:34:46,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:46,175 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:46,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 12:34:46,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:46,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:46,175 INFO L85 PathProgramCache]: Analyzing trace with hash -508596047, now seen corresponding path program 1 times [2023-08-30 12:34:46,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:46,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665679924] [2023-08-30 12:34:46,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:46,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:46,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:46,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:46,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665679924] [2023-08-30 12:34:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665679924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:46,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:46,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:46,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928059232] [2023-08-30 12:34:46,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:46,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:46,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:46,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:46,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:46,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 314 [2023-08-30 12:34:46,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 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 12:34:46,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:46,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 314 [2023-08-30 12:34:46,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:46,613 INFO L130 PetriNetUnfolder]: 1976/3327 cut-off events. [2023-08-30 12:34:46,614 INFO L131 PetriNetUnfolder]: For 582/582 co-relation queries the response was YES. [2023-08-30 12:34:46,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 3327 events. 1976/3327 cut-off events. For 582/582 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 18153 event pairs, 95 based on Foata normal form. 0/2929 useless extension candidates. Maximal degree in co-relation 7268. Up to 3041 conditions per place. [2023-08-30 12:34:46,631 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 60 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-08-30 12:34:46,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 315 flow [2023-08-30 12:34:46,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:46,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 519 transitions. [2023-08-30 12:34:46,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509554140127388 [2023-08-30 12:34:46,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 519 transitions. [2023-08-30 12:34:46,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 519 transitions. [2023-08-30 12:34:46,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:46,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 519 transitions. [2023-08-30 12:34:46,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 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 12:34:46,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:46,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:46,639 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 132 flow. Second operand 3 states and 519 transitions. [2023-08-30 12:34:46,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 315 flow [2023-08-30 12:34:46,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 311 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:46,642 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 128 flow [2023-08-30 12:34:46,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-08-30 12:34:46,643 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-30 12:34:46,644 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 128 flow [2023-08-30 12:34:46,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 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 12:34:46,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:46,645 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:46,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 12:34:46,645 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:46,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:46,646 INFO L85 PathProgramCache]: Analyzing trace with hash -508596003, now seen corresponding path program 1 times [2023-08-30 12:34:46,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:46,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961401965] [2023-08-30 12:34:46,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:46,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:34:46,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:46,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961401965] [2023-08-30 12:34:46,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961401965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:46,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:46,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:46,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747012616] [2023-08-30 12:34:46,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:46,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:46,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:46,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:46,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:46,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 314 [2023-08-30 12:34:46,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 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 12:34:46,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:46,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 314 [2023-08-30 12:34:46,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:46,952 INFO L130 PetriNetUnfolder]: 1863/3136 cut-off events. [2023-08-30 12:34:46,953 INFO L131 PetriNetUnfolder]: For 629/629 co-relation queries the response was YES. [2023-08-30 12:34:46,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 3136 events. 1863/3136 cut-off events. For 629/629 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 16925 event pairs, 305 based on Foata normal form. 0/2826 useless extension candidates. Maximal degree in co-relation 6868. Up to 2390 conditions per place. [2023-08-30 12:34:46,968 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 57 selfloop transitions, 4 changer transitions 0/62 dead transitions. [2023-08-30 12:34:46,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 62 transitions, 311 flow [2023-08-30 12:34:46,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:46,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:46,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-30 12:34:46,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477707006369427 [2023-08-30 12:34:46,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-30 12:34:46,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-30 12:34:46,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:46,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-30 12:34:46,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 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 12:34:46,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:46,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:46,975 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 128 flow. Second operand 3 states and 516 transitions. [2023-08-30 12:34:46,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 62 transitions, 311 flow [2023-08-30 12:34:46,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:46,977 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 139 flow [2023-08-30 12:34:46,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-30 12:34:46,978 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-30 12:34:46,978 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 139 flow [2023-08-30 12:34:46,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 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 12:34:46,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:46,979 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:46,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 12:34:46,980 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:46,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash 368720070, now seen corresponding path program 1 times [2023-08-30 12:34:46,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:46,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092973190] [2023-08-30 12:34:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:46,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:47,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:47,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092973190] [2023-08-30 12:34:47,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092973190] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:34:47,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63500306] [2023-08-30 12:34:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:47,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:34:47,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:34:47,066 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 12:34:47,083 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 12:34:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:47,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 12:34:47,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:34:47,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:47,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:34:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:47,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63500306] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:34:47,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:34:47,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 12:34:47,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346927494] [2023-08-30 12:34:47,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:34:47,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 12:34:47,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:47,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 12:34:47,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 12:34:47,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 314 [2023-08-30 12:34:47,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 139 flow. Second operand has 10 states, 10 states have (on average 148.7) internal successors, (1487), 10 states have internal predecessors, (1487), 0 states have call successors, (0), 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 12:34:47,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:47,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 314 [2023-08-30 12:34:47,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:48,272 INFO L130 PetriNetUnfolder]: 4164/6893 cut-off events. [2023-08-30 12:34:48,273 INFO L131 PetriNetUnfolder]: For 3791/3791 co-relation queries the response was YES. [2023-08-30 12:34:48,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17358 conditions, 6893 events. 4164/6893 cut-off events. For 3791/3791 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 39128 event pairs, 675 based on Foata normal form. 146/6435 useless extension candidates. Maximal degree in co-relation 16770. Up to 2039 conditions per place. [2023-08-30 12:34:48,316 INFO L137 encePairwiseOnDemand]: 302/314 looper letters, 212 selfloop transitions, 40 changer transitions 2/255 dead transitions. [2023-08-30 12:34:48,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 255 transitions, 1399 flow [2023-08-30 12:34:48,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 12:34:48,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 12:34:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2273 transitions. [2023-08-30 12:34:48,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5170609645131938 [2023-08-30 12:34:48,322 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2273 transitions. [2023-08-30 12:34:48,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2273 transitions. [2023-08-30 12:34:48,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:48,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2273 transitions. [2023-08-30 12:34:48,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 162.35714285714286) internal successors, (2273), 14 states have internal predecessors, (2273), 0 states have call successors, (0), 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 12:34:48,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 314.0) internal successors, (4710), 15 states have internal predecessors, (4710), 0 states have call successors, (0), 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 12:34:48,340 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 314.0) internal successors, (4710), 15 states have internal predecessors, (4710), 0 states have call successors, (0), 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 12:34:48,340 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 139 flow. Second operand 14 states and 2273 transitions. [2023-08-30 12:34:48,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 255 transitions, 1399 flow [2023-08-30 12:34:48,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 255 transitions, 1353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:48,361 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 446 flow [2023-08-30 12:34:48,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=446, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-08-30 12:34:48,365 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-08-30 12:34:48,365 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 446 flow [2023-08-30 12:34:48,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 148.7) internal successors, (1487), 10 states have internal predecessors, (1487), 0 states have call successors, (0), 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 12:34:48,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:48,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:48,380 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 12:34:48,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-30 12:34:48,581 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:48,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:48,582 INFO L85 PathProgramCache]: Analyzing trace with hash 526856183, now seen corresponding path program 1 times [2023-08-30 12:34:48,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:48,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867592547] [2023-08-30 12:34:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:48,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:48,679 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 12:34:48,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:48,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867592547] [2023-08-30 12:34:48,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867592547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:48,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:48,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 12:34:48,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557594977] [2023-08-30 12:34:48,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:48,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:48,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:48,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:48,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:48,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 314 [2023-08-30 12:34:48,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 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 12:34:48,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:48,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 314 [2023-08-30 12:34:48,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:49,058 INFO L130 PetriNetUnfolder]: 1972/3341 cut-off events. [2023-08-30 12:34:49,058 INFO L131 PetriNetUnfolder]: For 3438/3438 co-relation queries the response was YES. [2023-08-30 12:34:49,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10267 conditions, 3341 events. 1972/3341 cut-off events. For 3438/3438 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17524 event pairs, 419 based on Foata normal form. 212/3301 useless extension candidates. Maximal degree in co-relation 9582. Up to 2429 conditions per place. [2023-08-30 12:34:49,080 INFO L137 encePairwiseOnDemand]: 309/314 looper letters, 70 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-30 12:34:49,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 532 flow [2023-08-30 12:34:49,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:49,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-08-30 12:34:49,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403397027600849 [2023-08-30 12:34:49,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-08-30 12:34:49,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-08-30 12:34:49,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:49,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-08-30 12:34:49,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 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 12:34:49,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:49,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:49,088 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 446 flow. Second operand 3 states and 509 transitions. [2023-08-30 12:34:49,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 532 flow [2023-08-30 12:34:49,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 499 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-30 12:34:49,106 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 299 flow [2023-08-30 12:34:49,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-08-30 12:34:49,107 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-08-30 12:34:49,107 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 299 flow [2023-08-30 12:34:49,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 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 12:34:49,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:49,108 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:49,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 12:34:49,108 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:49,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:49,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1455462650, now seen corresponding path program 1 times [2023-08-30 12:34:49,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:49,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023272052] [2023-08-30 12:34:49,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:49,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:49,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:49,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023272052] [2023-08-30 12:34:49,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023272052] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:34:49,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68811791] [2023-08-30 12:34:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:49,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:34:49,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:34:49,197 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 12:34:49,218 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 12:34:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:49,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 12:34:49,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:34:49,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:49,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 12:34:49,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68811791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:49,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 12:34:49,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-30 12:34:49,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338160896] [2023-08-30 12:34:49,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:49,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:34:49,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:49,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:34:49,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:34:49,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 314 [2023-08-30 12:34:49,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 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 12:34:49,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:49,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 314 [2023-08-30 12:34:49,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:49,718 INFO L130 PetriNetUnfolder]: 1801/3184 cut-off events. [2023-08-30 12:34:49,718 INFO L131 PetriNetUnfolder]: For 3023/3023 co-relation queries the response was YES. [2023-08-30 12:34:49,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 3184 events. 1801/3184 cut-off events. For 3023/3023 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 15682 event pairs, 527 based on Foata normal form. 250/3196 useless extension candidates. Maximal degree in co-relation 8882. Up to 1653 conditions per place. [2023-08-30 12:34:49,736 INFO L137 encePairwiseOnDemand]: 303/314 looper letters, 92 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2023-08-30 12:34:49,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 109 transitions, 723 flow [2023-08-30 12:34:49,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 12:34:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 12:34:49,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 955 transitions. [2023-08-30 12:34:49,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069002123142251 [2023-08-30 12:34:49,739 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 955 transitions. [2023-08-30 12:34:49,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 955 transitions. [2023-08-30 12:34:49,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:49,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 955 transitions. [2023-08-30 12:34:49,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.16666666666666) internal successors, (955), 6 states have internal predecessors, (955), 0 states have call successors, (0), 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 12:34:49,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 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 12:34:49,745 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 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 12:34:49,745 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 299 flow. Second operand 6 states and 955 transitions. [2023-08-30 12:34:49,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 109 transitions, 723 flow [2023-08-30 12:34:49,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 109 transitions, 711 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:49,751 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 403 flow [2023-08-30 12:34:49,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-30 12:34:49,752 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 12:34:49,752 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 403 flow [2023-08-30 12:34:49,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 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 12:34:49,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:49,753 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 12:34:49,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 12:34:49,958 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,SelfDestructingSolverStorable7 [2023-08-30 12:34:49,959 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:49,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:49,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1992356996, now seen corresponding path program 1 times [2023-08-30 12:34:49,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:49,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566245610] [2023-08-30 12:34:49,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:49,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 12:34:50,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:50,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566245610] [2023-08-30 12:34:50,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566245610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:50,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:50,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:50,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450057915] [2023-08-30 12:34:50,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:50,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:50,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:50,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:50,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:50,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 314 [2023-08-30 12:34:50,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 403 flow. Second operand has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 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 12:34:50,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:50,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 314 [2023-08-30 12:34:50,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:50,293 INFO L130 PetriNetUnfolder]: 1623/2884 cut-off events. [2023-08-30 12:34:50,293 INFO L131 PetriNetUnfolder]: For 3610/3614 co-relation queries the response was YES. [2023-08-30 12:34:50,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9047 conditions, 2884 events. 1623/2884 cut-off events. For 3610/3614 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 14119 event pairs, 471 based on Foata normal form. 4/2766 useless extension candidates. Maximal degree in co-relation 5244. Up to 1816 conditions per place. [2023-08-30 12:34:50,308 INFO L137 encePairwiseOnDemand]: 310/314 looper letters, 83 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2023-08-30 12:34:50,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 712 flow [2023-08-30 12:34:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-08-30 12:34:50,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424628450106157 [2023-08-30 12:34:50,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-08-30 12:34:50,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-08-30 12:34:50,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:50,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-08-30 12:34:50,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 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 12:34:50,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:50,314 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:50,314 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 403 flow. Second operand 3 states and 511 transitions. [2023-08-30 12:34:50,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 712 flow [2023-08-30 12:34:50,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 704 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 12:34:50,321 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 408 flow [2023-08-30 12:34:50,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-30 12:34:50,322 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 12:34:50,322 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 408 flow [2023-08-30 12:34:50,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 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 12:34:50,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:50,323 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-30 12:34:50,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 12:34:50,323 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:50,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:50,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1992357056, now seen corresponding path program 1 times [2023-08-30 12:34:50,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:50,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656000272] [2023-08-30 12:34:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:50,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:50,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:50,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656000272] [2023-08-30 12:34:50,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656000272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:50,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:50,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 12:34:50,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985919969] [2023-08-30 12:34:50,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:50,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 12:34:50,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:50,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 12:34:50,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 12:34:50,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 314 [2023-08-30 12:34:50,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 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 12:34:50,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:50,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 314 [2023-08-30 12:34:50,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:50,600 INFO L130 PetriNetUnfolder]: 1445/2588 cut-off events. [2023-08-30 12:34:50,601 INFO L131 PetriNetUnfolder]: For 4313/4325 co-relation queries the response was YES. [2023-08-30 12:34:50,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8467 conditions, 2588 events. 1445/2588 cut-off events. For 4313/4325 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12539 event pairs, 437 based on Foata normal form. 128/2710 useless extension candidates. Maximal degree in co-relation 7976. Up to 2546 conditions per place. [2023-08-30 12:34:50,616 INFO L137 encePairwiseOnDemand]: 312/314 looper letters, 71 selfloop transitions, 1 changer transitions 0/73 dead transitions. [2023-08-30 12:34:50,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 597 flow [2023-08-30 12:34:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 12:34:50,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 12:34:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-08-30 12:34:50,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535031847133758 [2023-08-30 12:34:50,619 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-08-30 12:34:50,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-08-30 12:34:50,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:50,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-08-30 12:34:50,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 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 12:34:50,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:50,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 0 states have call successors, (0), 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 12:34:50,623 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 408 flow. Second operand 3 states and 504 transitions. [2023-08-30 12:34:50,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 597 flow [2023-08-30 12:34:50,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 593 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:50,630 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 402 flow [2023-08-30 12:34:50,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-08-30 12:34:50,632 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 12:34:50,632 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 402 flow [2023-08-30 12:34:50,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 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 12:34:50,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:50,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 12:34:50,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 12:34:50,633 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:50,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:50,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1503408652, now seen corresponding path program 1 times [2023-08-30 12:34:50,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:50,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976666253] [2023-08-30 12:34:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:50,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:50,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:50,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:50,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976666253] [2023-08-30 12:34:50,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976666253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:50,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:50,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 12:34:50,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746307313] [2023-08-30 12:34:50,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:50,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 12:34:50,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:50,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 12:34:50,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 12:34:50,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 314 [2023-08-30 12:34:50,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 402 flow. Second operand has 7 states, 7 states have (on average 143.71428571428572) internal successors, (1006), 7 states have internal predecessors, (1006), 0 states have call successors, (0), 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 12:34:50,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:50,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 314 [2023-08-30 12:34:50,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:51,228 INFO L130 PetriNetUnfolder]: 1581/2844 cut-off events. [2023-08-30 12:34:51,229 INFO L131 PetriNetUnfolder]: For 4134/4134 co-relation queries the response was YES. [2023-08-30 12:34:51,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9126 conditions, 2844 events. 1581/2844 cut-off events. For 4134/4134 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 13561 event pairs, 395 based on Foata normal form. 24/2862 useless extension candidates. Maximal degree in co-relation 8918. Up to 1665 conditions per place. [2023-08-30 12:34:51,247 INFO L137 encePairwiseOnDemand]: 304/314 looper letters, 106 selfloop transitions, 14 changer transitions 9/130 dead transitions. [2023-08-30 12:34:51,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 130 transitions, 942 flow [2023-08-30 12:34:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:34:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:34:51,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1082 transitions. [2023-08-30 12:34:51,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49226569608735216 [2023-08-30 12:34:51,251 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1082 transitions. [2023-08-30 12:34:51,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1082 transitions. [2023-08-30 12:34:51,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:51,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1082 transitions. [2023-08-30 12:34:51,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.57142857142858) internal successors, (1082), 7 states have internal predecessors, (1082), 0 states have call successors, (0), 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 12:34:51,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 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 12:34:51,258 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 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 12:34:51,258 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 402 flow. Second operand 7 states and 1082 transitions. [2023-08-30 12:34:51,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 130 transitions, 942 flow [2023-08-30 12:34:51,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 130 transitions, 941 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:51,267 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 506 flow [2023-08-30 12:34:51,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=506, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2023-08-30 12:34:51,267 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2023-08-30 12:34:51,268 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 506 flow [2023-08-30 12:34:51,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 143.71428571428572) internal successors, (1006), 7 states have internal predecessors, (1006), 0 states have call successors, (0), 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 12:34:51,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:51,269 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:51,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 12:34:51,269 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:51,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:51,269 INFO L85 PathProgramCache]: Analyzing trace with hash 12520344, now seen corresponding path program 1 times [2023-08-30 12:34:51,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:51,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412717905] [2023-08-30 12:34:51,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:51,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:51,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:51,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:51,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412717905] [2023-08-30 12:34:51,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412717905] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:51,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:51,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 12:34:51,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522262946] [2023-08-30 12:34:51,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:51,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 12:34:51,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:51,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 12:34:51,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 12:34:51,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 314 [2023-08-30 12:34:51,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 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 12:34:51,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:51,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 314 [2023-08-30 12:34:51,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:51,835 INFO L130 PetriNetUnfolder]: 1991/3558 cut-off events. [2023-08-30 12:34:51,835 INFO L131 PetriNetUnfolder]: For 6442/6442 co-relation queries the response was YES. [2023-08-30 12:34:51,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11951 conditions, 3558 events. 1991/3558 cut-off events. For 6442/6442 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 18341 event pairs, 408 based on Foata normal form. 16/3568 useless extension candidates. Maximal degree in co-relation 11738. Up to 1703 conditions per place. [2023-08-30 12:34:51,858 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 101 selfloop transitions, 22 changer transitions 0/124 dead transitions. [2023-08-30 12:34:51,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 124 transitions, 1057 flow [2023-08-30 12:34:51,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 12:34:51,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 12:34:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 806 transitions. [2023-08-30 12:34:51,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513375796178344 [2023-08-30 12:34:51,862 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 806 transitions. [2023-08-30 12:34:51,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 806 transitions. [2023-08-30 12:34:51,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:51,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 806 transitions. [2023-08-30 12:34:51,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.2) internal successors, (806), 5 states have internal predecessors, (806), 0 states have call successors, (0), 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 12:34:51,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 0 states have call successors, (0), 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 12:34:51,868 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 314.0) internal successors, (1884), 6 states have internal predecessors, (1884), 0 states have call successors, (0), 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 12:34:51,868 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 506 flow. Second operand 5 states and 806 transitions. [2023-08-30 12:34:51,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 124 transitions, 1057 flow [2023-08-30 12:34:51,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 124 transitions, 1049 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 12:34:51,880 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 689 flow [2023-08-30 12:34:51,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=689, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2023-08-30 12:34:51,883 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2023-08-30 12:34:51,884 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 689 flow [2023-08-30 12:34:51,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 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 12:34:51,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:51,884 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1] [2023-08-30 12:34:51,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 12:34:51,885 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:51,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:51,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1115528668, now seen corresponding path program 1 times [2023-08-30 12:34:51,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:51,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044802463] [2023-08-30 12:34:51,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:51,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:52,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:52,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044802463] [2023-08-30 12:34:52,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044802463] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:34:52,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077580639] [2023-08-30 12:34:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:52,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:34:52,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:34:52,089 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 12:34:52,097 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 12:34:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:52,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 12:34:52,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:34:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:52,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:34:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:52,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077580639] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:34:52,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:34:52,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 12:34:52,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935079573] [2023-08-30 12:34:52,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:34:52,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 12:34:52,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:52,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 12:34:52,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-08-30 12:34:52,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 314 [2023-08-30 12:34:52,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 689 flow. Second operand has 18 states, 18 states have (on average 149.05555555555554) internal successors, (2683), 18 states have internal predecessors, (2683), 0 states have call successors, (0), 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 12:34:52,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:52,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 314 [2023-08-30 12:34:52,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:53,680 INFO L130 PetriNetUnfolder]: 3443/6138 cut-off events. [2023-08-30 12:34:53,681 INFO L131 PetriNetUnfolder]: For 18166/18166 co-relation queries the response was YES. [2023-08-30 12:34:53,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21801 conditions, 6138 events. 3443/6138 cut-off events. For 18166/18166 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 30311 event pairs, 719 based on Foata normal form. 194/6332 useless extension candidates. Maximal degree in co-relation 21584. Up to 1426 conditions per place. [2023-08-30 12:34:53,721 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 276 selfloop transitions, 63 changer transitions 3/343 dead transitions. [2023-08-30 12:34:53,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 343 transitions, 2846 flow [2023-08-30 12:34:53,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:34:53,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:34:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3044 transitions. [2023-08-30 12:34:53,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102246061012403 [2023-08-30 12:34:53,729 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3044 transitions. [2023-08-30 12:34:53,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3044 transitions. [2023-08-30 12:34:53,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:53,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3044 transitions. [2023-08-30 12:34:53,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 160.21052631578948) internal successors, (3044), 19 states have internal predecessors, (3044), 0 states have call successors, (0), 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 12:34:53,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 314.0) internal successors, (6280), 20 states have internal predecessors, (6280), 0 states have call successors, (0), 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 12:34:53,756 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 314.0) internal successors, (6280), 20 states have internal predecessors, (6280), 0 states have call successors, (0), 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 12:34:53,757 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 689 flow. Second operand 19 states and 3044 transitions. [2023-08-30 12:34:53,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 343 transitions, 2846 flow [2023-08-30 12:34:53,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 343 transitions, 2825 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 12:34:53,782 INFO L231 Difference]: Finished difference. Result has 101 places, 111 transitions, 1294 flow [2023-08-30 12:34:53,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1294, PETRI_PLACES=101, PETRI_TRANSITIONS=111} [2023-08-30 12:34:53,783 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2023-08-30 12:34:53,784 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 111 transitions, 1294 flow [2023-08-30 12:34:53,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 149.05555555555554) internal successors, (2683), 18 states have internal predecessors, (2683), 0 states have call successors, (0), 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 12:34:53,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:53,785 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:53,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 12:34:53,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:34:53,991 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:53,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash -341440793, now seen corresponding path program 1 times [2023-08-30 12:34:53,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:53,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640213673] [2023-08-30 12:34:53,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:53,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:54,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:54,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640213673] [2023-08-30 12:34:54,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640213673] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:34:54,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764471231] [2023-08-30 12:34:54,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:54,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:34:54,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:34:54,174 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 12:34:54,177 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 12:34:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:54,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 12:34:54,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:34:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:54,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:34:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:54,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764471231] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:34:54,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:34:54,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 12:34:54,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340921042] [2023-08-30 12:34:54,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:34:54,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 12:34:54,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:54,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 12:34:54,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-30 12:34:54,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 314 [2023-08-30 12:34:54,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 111 transitions, 1294 flow. Second operand has 16 states, 16 states have (on average 143.0) internal successors, (2288), 16 states have internal predecessors, (2288), 0 states have call successors, (0), 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 12:34:54,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:54,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 314 [2023-08-30 12:34:54,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:55,529 INFO L130 PetriNetUnfolder]: 3773/6716 cut-off events. [2023-08-30 12:34:55,529 INFO L131 PetriNetUnfolder]: For 22994/22994 co-relation queries the response was YES. [2023-08-30 12:34:55,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24748 conditions, 6716 events. 3773/6716 cut-off events. For 22994/22994 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 34129 event pairs, 735 based on Foata normal form. 64/6780 useless extension candidates. Maximal degree in co-relation 24524. Up to 3406 conditions per place. [2023-08-30 12:34:55,577 INFO L137 encePairwiseOnDemand]: 304/314 looper letters, 140 selfloop transitions, 79 changer transitions 21/241 dead transitions. [2023-08-30 12:34:55,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 241 transitions, 2405 flow [2023-08-30 12:34:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 12:34:55,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 12:34:55,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2232 transitions. [2023-08-30 12:34:55,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47388535031847134 [2023-08-30 12:34:55,583 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2232 transitions. [2023-08-30 12:34:55,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2232 transitions. [2023-08-30 12:34:55,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:55,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2232 transitions. [2023-08-30 12:34:55,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 148.8) internal successors, (2232), 15 states have internal predecessors, (2232), 0 states have call successors, (0), 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 12:34:55,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 314.0) internal successors, (5024), 16 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 12:34:55,596 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 314.0) internal successors, (5024), 16 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 12:34:55,596 INFO L175 Difference]: Start difference. First operand has 101 places, 111 transitions, 1294 flow. Second operand 15 states and 2232 transitions. [2023-08-30 12:34:55,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 241 transitions, 2405 flow [2023-08-30 12:34:55,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 241 transitions, 2211 flow, removed 55 selfloop flow, removed 9 redundant places. [2023-08-30 12:34:55,645 INFO L231 Difference]: Finished difference. Result has 107 places, 118 transitions, 1392 flow [2023-08-30 12:34:55,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1392, PETRI_PLACES=107, PETRI_TRANSITIONS=118} [2023-08-30 12:34:55,646 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2023-08-30 12:34:55,646 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 118 transitions, 1392 flow [2023-08-30 12:34:55,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 143.0) internal successors, (2288), 16 states have internal predecessors, (2288), 0 states have call successors, (0), 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 12:34:55,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:55,647 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:55,653 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 12:34:55,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:34:55,853 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:55,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:55,853 INFO L85 PathProgramCache]: Analyzing trace with hash 117434737, now seen corresponding path program 2 times [2023-08-30 12:34:55,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:55,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740288020] [2023-08-30 12:34:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:55,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 12:34:56,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:56,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740288020] [2023-08-30 12:34:56,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740288020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 12:34:56,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 12:34:56,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 12:34:56,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818361547] [2023-08-30 12:34:56,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 12:34:56,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 12:34:56,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:56,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 12:34:56,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 12:34:56,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 314 [2023-08-30 12:34:56,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 118 transitions, 1392 flow. Second operand has 6 states, 6 states have (on average 145.83333333333334) internal successors, (875), 6 states have internal predecessors, (875), 0 states have call successors, (0), 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 12:34:56,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:56,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 314 [2023-08-30 12:34:56,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:56,556 INFO L130 PetriNetUnfolder]: 2588/4665 cut-off events. [2023-08-30 12:34:56,556 INFO L131 PetriNetUnfolder]: For 14947/14947 co-relation queries the response was YES. [2023-08-30 12:34:56,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17242 conditions, 4665 events. 2588/4665 cut-off events. For 14947/14947 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 21888 event pairs, 413 based on Foata normal form. 84/4749 useless extension candidates. Maximal degree in co-relation 17016. Up to 3150 conditions per place. [2023-08-30 12:34:56,588 INFO L137 encePairwiseOnDemand]: 304/314 looper letters, 71 selfloop transitions, 62 changer transitions 0/134 dead transitions. [2023-08-30 12:34:56,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 134 transitions, 1538 flow [2023-08-30 12:34:56,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 12:34:56,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 12:34:56,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1041 transitions. [2023-08-30 12:34:56,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47361237488626023 [2023-08-30 12:34:56,595 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1041 transitions. [2023-08-30 12:34:56,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1041 transitions. [2023-08-30 12:34:56,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:56,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1041 transitions. [2023-08-30 12:34:56,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.71428571428572) internal successors, (1041), 7 states have internal predecessors, (1041), 0 states have call successors, (0), 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 12:34:56,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 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 12:34:56,601 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 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 12:34:56,601 INFO L175 Difference]: Start difference. First operand has 107 places, 118 transitions, 1392 flow. Second operand 7 states and 1041 transitions. [2023-08-30 12:34:56,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 134 transitions, 1538 flow [2023-08-30 12:34:56,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 134 transitions, 1450 flow, removed 31 selfloop flow, removed 6 redundant places. [2023-08-30 12:34:56,633 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 1215 flow [2023-08-30 12:34:56,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1215, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2023-08-30 12:34:56,634 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2023-08-30 12:34:56,634 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 1215 flow [2023-08-30 12:34:56,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.83333333333334) internal successors, (875), 6 states have internal predecessors, (875), 0 states have call successors, (0), 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 12:34:56,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:56,634 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:56,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 12:34:56,635 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:56,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1894392210, now seen corresponding path program 1 times [2023-08-30 12:34:56,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:56,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619911916] [2023-08-30 12:34:56,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:56,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 12:34:56,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:56,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619911916] [2023-08-30 12:34:56,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619911916] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:34:56,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480505514] [2023-08-30 12:34:56,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:56,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:34:56,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:34:56,833 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 12:34:56,836 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 12:34:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:56,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 12:34:56,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:34:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:34:57,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:34:57,120 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:34:57,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480505514] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:34:57,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:34:57,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2023-08-30 12:34:57,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240051876] [2023-08-30 12:34:57,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:34:57,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 12:34:57,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:57,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 12:34:57,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-30 12:34:57,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 314 [2023-08-30 12:34:57,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 1215 flow. Second operand has 16 states, 16 states have (on average 145.125) internal successors, (2322), 16 states have internal predecessors, (2322), 0 states have call successors, (0), 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 12:34:57,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:57,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 314 [2023-08-30 12:34:57,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:34:58,234 INFO L130 PetriNetUnfolder]: 3563/6402 cut-off events. [2023-08-30 12:34:58,234 INFO L131 PetriNetUnfolder]: For 20795/20795 co-relation queries the response was YES. [2023-08-30 12:34:58,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24063 conditions, 6402 events. 3563/6402 cut-off events. For 20795/20795 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 32710 event pairs, 505 based on Foata normal form. 44/6446 useless extension candidates. Maximal degree in co-relation 23836. Up to 1619 conditions per place. [2023-08-30 12:34:58,285 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 225 selfloop transitions, 80 changer transitions 0/306 dead transitions. [2023-08-30 12:34:58,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 306 transitions, 3050 flow [2023-08-30 12:34:58,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 12:34:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 12:34:58,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2866 transitions. [2023-08-30 12:34:58,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48038887026483407 [2023-08-30 12:34:58,300 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2866 transitions. [2023-08-30 12:34:58,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2866 transitions. [2023-08-30 12:34:58,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:34:58,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2866 transitions. [2023-08-30 12:34:58,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 150.8421052631579) internal successors, (2866), 19 states have internal predecessors, (2866), 0 states have call successors, (0), 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 12:34:58,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 314.0) internal successors, (6280), 20 states have internal predecessors, (6280), 0 states have call successors, (0), 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 12:34:58,324 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 314.0) internal successors, (6280), 20 states have internal predecessors, (6280), 0 states have call successors, (0), 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 12:34:58,325 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 1215 flow. Second operand 19 states and 2866 transitions. [2023-08-30 12:34:58,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 306 transitions, 3050 flow [2023-08-30 12:34:58,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 306 transitions, 2864 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-08-30 12:34:58,374 INFO L231 Difference]: Finished difference. Result has 125 places, 137 transitions, 1804 flow [2023-08-30 12:34:58,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1804, PETRI_PLACES=125, PETRI_TRANSITIONS=137} [2023-08-30 12:34:58,375 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2023-08-30 12:34:58,375 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 137 transitions, 1804 flow [2023-08-30 12:34:58,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 145.125) internal successors, (2322), 16 states have internal predecessors, (2322), 0 states have call successors, (0), 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 12:34:58,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:34:58,376 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:34:58,386 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 12:34:58,581 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,SelfDestructingSolverStorable15 [2023-08-30 12:34:58,582 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:34:58,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:34:58,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1791692103, now seen corresponding path program 2 times [2023-08-30 12:34:58,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:34:58,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148759607] [2023-08-30 12:34:58,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:34:58,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:34:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:34:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 12:34:58,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:34:58,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148759607] [2023-08-30 12:34:58,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148759607] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:34:58,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798317264] [2023-08-30 12:34:58,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 12:34:58,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:34:58,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:34:58,859 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 12:34:58,886 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 12:34:59,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 12:34:59,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:34:59,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 12:34:59,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:34:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 12:34:59,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:34:59,288 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 12:34:59,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798317264] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:34:59,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:34:59,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-08-30 12:34:59,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901914390] [2023-08-30 12:34:59,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:34:59,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 12:34:59,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:34:59,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 12:34:59,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2023-08-30 12:34:59,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 314 [2023-08-30 12:34:59,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 137 transitions, 1804 flow. Second operand has 24 states, 24 states have (on average 143.41666666666666) internal successors, (3442), 24 states have internal predecessors, (3442), 0 states have call successors, (0), 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 12:34:59,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:34:59,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 314 [2023-08-30 12:34:59,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:00,916 INFO L130 PetriNetUnfolder]: 4971/8918 cut-off events. [2023-08-30 12:35:00,916 INFO L131 PetriNetUnfolder]: For 32883/32883 co-relation queries the response was YES. [2023-08-30 12:35:00,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33883 conditions, 8918 events. 4971/8918 cut-off events. For 32883/32883 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 48384 event pairs, 537 based on Foata normal form. 114/9032 useless extension candidates. Maximal degree in co-relation 33650. Up to 1862 conditions per place. [2023-08-30 12:35:00,967 INFO L137 encePairwiseOnDemand]: 306/314 looper letters, 293 selfloop transitions, 154 changer transitions 0/448 dead transitions. [2023-08-30 12:35:00,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 448 transitions, 4536 flow [2023-08-30 12:35:00,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-30 12:35:00,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-30 12:35:00,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 4744 transitions. [2023-08-30 12:35:00,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721337579617834 [2023-08-30 12:35:00,973 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 4744 transitions. [2023-08-30 12:35:00,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 4744 transitions. [2023-08-30 12:35:00,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:00,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 4744 transitions. [2023-08-30 12:35:00,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 148.25) internal successors, (4744), 32 states have internal predecessors, (4744), 0 states have call successors, (0), 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 12:35:00,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 314.0) internal successors, (10362), 33 states have internal predecessors, (10362), 0 states have call successors, (0), 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 12:35:00,992 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 314.0) internal successors, (10362), 33 states have internal predecessors, (10362), 0 states have call successors, (0), 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 12:35:00,993 INFO L175 Difference]: Start difference. First operand has 125 places, 137 transitions, 1804 flow. Second operand 32 states and 4744 transitions. [2023-08-30 12:35:00,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 448 transitions, 4536 flow [2023-08-30 12:35:01,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 448 transitions, 4472 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-08-30 12:35:01,076 INFO L231 Difference]: Finished difference. Result has 159 places, 193 transitions, 2910 flow [2023-08-30 12:35:01,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2910, PETRI_PLACES=159, PETRI_TRANSITIONS=193} [2023-08-30 12:35:01,077 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 117 predicate places. [2023-08-30 12:35:01,077 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 193 transitions, 2910 flow [2023-08-30 12:35:01,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 143.41666666666666) internal successors, (3442), 24 states have internal predecessors, (3442), 0 states have call successors, (0), 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 12:35:01,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 12:35:01,079 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:01,089 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 12:35:01,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 12:35:01,289 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2023-08-30 12:35:01,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 12:35:01,290 INFO L85 PathProgramCache]: Analyzing trace with hash -953431303, now seen corresponding path program 3 times [2023-08-30 12:35:01,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 12:35:01,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083328007] [2023-08-30 12:35:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 12:35:01,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 12:35:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 12:35:01,624 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:35:01,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 12:35:01,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083328007] [2023-08-30 12:35:01,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083328007] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 12:35:01,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521706267] [2023-08-30 12:35:01,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 12:35:01,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:01,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 12:35:01,627 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 12:35:01,630 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 12:35:01,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-30 12:35:01,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 12:35:01,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 12:35:01,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 12:35:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:35:02,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 12:35:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 12:35:02,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521706267] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 12:35:02,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 12:35:02,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2023-08-30 12:35:02,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261055327] [2023-08-30 12:35:02,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 12:35:02,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-30 12:35:02,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 12:35:02,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-30 12:35:02,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2023-08-30 12:35:02,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 314 [2023-08-30 12:35:02,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 193 transitions, 2910 flow. Second operand has 28 states, 28 states have (on average 143.64285714285714) internal successors, (4022), 28 states have internal predecessors, (4022), 0 states have call successors, (0), 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 12:35:02,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 12:35:02,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 314 [2023-08-30 12:35:02,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 12:35:03,627 INFO L130 PetriNetUnfolder]: 4943/8888 cut-off events. [2023-08-30 12:35:03,628 INFO L131 PetriNetUnfolder]: For 30171/30171 co-relation queries the response was YES. [2023-08-30 12:35:03,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35043 conditions, 8888 events. 4943/8888 cut-off events. For 30171/30171 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 48327 event pairs, 795 based on Foata normal form. 38/8926 useless extension candidates. Maximal degree in co-relation 34804. Up to 3203 conditions per place. [2023-08-30 12:35:03,673 INFO L137 encePairwiseOnDemand]: 305/314 looper letters, 0 selfloop transitions, 0 changer transitions 334/334 dead transitions. [2023-08-30 12:35:03,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 334 transitions, 4110 flow [2023-08-30 12:35:03,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 12:35:03,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 12:35:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2950 transitions. [2023-08-30 12:35:03,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697452229299363 [2023-08-30 12:35:03,677 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2950 transitions. [2023-08-30 12:35:03,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2950 transitions. [2023-08-30 12:35:03,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 12:35:03,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2950 transitions. [2023-08-30 12:35:03,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 147.5) internal successors, (2950), 20 states have internal predecessors, (2950), 0 states have call successors, (0), 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 12:35:03,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 314.0) internal successors, (6594), 21 states have internal predecessors, (6594), 0 states have call successors, (0), 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 12:35:03,689 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 314.0) internal successors, (6594), 21 states have internal predecessors, (6594), 0 states have call successors, (0), 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 12:35:03,689 INFO L175 Difference]: Start difference. First operand has 159 places, 193 transitions, 2910 flow. Second operand 20 states and 2950 transitions. [2023-08-30 12:35:03,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 334 transitions, 4110 flow [2023-08-30 12:35:03,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 334 transitions, 3744 flow, removed 31 selfloop flow, removed 24 redundant places. [2023-08-30 12:35:03,794 INFO L231 Difference]: Finished difference. Result has 153 places, 0 transitions, 0 flow [2023-08-30 12:35:03,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=0, PETRI_PLACES=153, PETRI_TRANSITIONS=0} [2023-08-30 12:35:03,795 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 111 predicate places. [2023-08-30 12:35:03,795 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 0 transitions, 0 flow [2023-08-30 12:35:03,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 143.64285714285714) internal successors, (4022), 28 states have internal predecessors, (4022), 0 states have call successors, (0), 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 12:35:03,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-30 12:35:03,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2023-08-30 12:35:03,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-30 12:35:03,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-30 12:35:03,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2023-08-30 12:35:03,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-30 12:35:03,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-30 12:35:03,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-30 12:35:03,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-30 12:35:03,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-30 12:35:03,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-30 12:35:03,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-30 12:35:03,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-30 12:35:03,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-30 12:35:03,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-30 12:35:03,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-30 12:35:03,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-30 12:35:03,801 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-30 12:35:03,809 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 12:35:04,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 12:35:04,007 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 12:35:04,012 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 12:35:04,012 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 12:35:04,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 12:35:04 BasicIcfg [2023-08-30 12:35:04,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 12:35:04,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 12:35:04,015 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 12:35:04,016 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 12:35:04,016 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 12:34:40" (3/4) ... [2023-08-30 12:35:04,018 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 12:35:04,022 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-08-30 12:35:04,022 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-08-30 12:35:04,025 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-08-30 12:35:04,025 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 12:35:04,025 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 12:35:04,025 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 12:35:04,049 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 12:35:04,049 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 12:35:04,050 INFO L158 Benchmark]: Toolchain (without parser) took 24907.50ms. Allocated memory was 81.8MB in the beginning and 1.2GB in the end (delta: 1.2GB). Free memory was 57.4MB in the beginning and 667.4MB in the end (delta: -610.0MB). Peak memory consumption was 548.3MB. Max. memory is 16.1GB. [2023-08-30 12:35:04,050 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 81.8MB. Free memory is still 59.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:35:04,051 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.48ms. Allocated memory is still 81.8MB. Free memory was 57.1MB in the beginning and 51.4MB in the end (delta: 5.7MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2023-08-30 12:35:04,051 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.55ms. Allocated memory is still 81.8MB. Free memory was 51.4MB in the beginning and 48.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 12:35:04,051 INFO L158 Benchmark]: Boogie Preprocessor took 52.86ms. Allocated memory is still 81.8MB. Free memory was 48.7MB in the beginning and 46.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 12:35:04,052 INFO L158 Benchmark]: RCFGBuilder took 594.28ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 46.9MB in the beginning and 74.5MB in the end (delta: -27.5MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2023-08-30 12:35:04,052 INFO L158 Benchmark]: TraceAbstraction took 23633.02ms. Allocated memory was 102.8MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 73.5MB in the beginning and 670.7MB in the end (delta: -597.2MB). Peak memory consumption was 790.2MB. Max. memory is 16.1GB. [2023-08-30 12:35:04,053 INFO L158 Benchmark]: Witness Printer took 34.18ms. Allocated memory is still 1.2GB. Free memory was 670.7MB in the beginning and 667.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 12:35:04,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 81.8MB. Free memory is still 59.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.48ms. Allocated memory is still 81.8MB. Free memory was 57.1MB in the beginning and 51.4MB in the end (delta: 5.7MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.55ms. Allocated memory is still 81.8MB. Free memory was 51.4MB in the beginning and 48.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.86ms. Allocated memory is still 81.8MB. Free memory was 48.7MB in the beginning and 46.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 594.28ms. Allocated memory was 81.8MB in the beginning and 102.8MB in the end (delta: 21.0MB). Free memory was 46.9MB in the beginning and 74.5MB in the end (delta: -27.5MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * TraceAbstraction took 23633.02ms. Allocated memory was 102.8MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 73.5MB in the beginning and 670.7MB in the end (delta: -597.2MB). Peak memory consumption was 790.2MB. Max. memory is 16.1GB. * Witness Printer took 34.18ms. Allocated memory is still 1.2GB. Free memory was 670.7MB in the beginning and 667.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 155 PlacesBefore, 42 PlacesAfterwards, 158 TransitionsBefore, 40 TransitionsAfterwards, 8200 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 92 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 5 ChoiceCompositions, 145 TotalNumberOfCompositions, 11973 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9149, independent: 8913, independent conditional: 0, independent unconditional: 8913, dependent: 236, dependent conditional: 0, dependent unconditional: 236, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4749, independent: 4698, independent conditional: 0, independent unconditional: 4698, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9149, independent: 4215, independent conditional: 0, independent unconditional: 4215, dependent: 185, dependent conditional: 0, dependent unconditional: 185, unknown: 4749, unknown conditional: 0, unknown unconditional: 4749] , Statistics on independence cache: Total cache size (in pairs): 284, Positive cache size: 263, Positive conditional cache size: 0, Positive unconditional cache size: 263, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 268 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.4s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3124 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2827 mSDsluCounter, 1340 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1295 mSDsCounter, 255 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5748 IncrementalHoareTripleChecker+Invalid, 6003 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 255 mSolverCounterUnsat, 45 mSDtfsCounter, 5748 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 650 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2910occurred in iteration=17, InterpolantAutomatonStates: 168, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 711 NumberOfCodeBlocks, 711 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 922 ConstructedInterpolants, 0 QuantifiedInterpolants, 2610 SizeOfPredicates, 24 NumberOfNonLiveVariables, 2341 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 31 InterpolantComputations, 12 PerfectInterpolantSequences, 131/994 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 12:35:04,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE