./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c --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/weaver/chl-node-symm.wvr.c -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 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --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 14:53:31,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:53:31,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:53:31,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:53:31,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:53:31,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:53:31,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:53:31,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:53:31,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:53:31,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:53:31,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:53:31,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:53:31,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:53:31,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:53:31,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:53:31,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:53:31,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:53:31,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:53:31,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:53:31,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:53:31,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:53:31,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:53:31,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:53:31,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:53:31,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:53:31,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:53:31,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:53:31,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:53:31,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:53:31,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:53:31,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:53:31,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:53:31,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:53:31,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:53:31,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:53:31,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:53:31,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:53:31,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:53:31,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:53:31,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:53:31,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:53:31,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:53:31,695 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:53:31,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:53:31,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:53:31,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:53:31,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:53:31,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:53:31,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:53:31,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:53:31,699 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:53:31,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:53:31,700 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:53:31,700 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:53:31,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:53:31,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:53:31,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:53:31,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:53:31,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:53:31,701 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:53:31,701 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:53:31,701 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:53:31,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:53:31,702 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:53:31,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:53:31,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:53:31,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:53:31,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:53:31,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:53:31,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:53:31,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:53:31,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:53:31,704 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:53:31,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:53:31,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:53:31,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:53:31,705 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:53:31,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:53:31,705 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:53:31,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:53:32,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:53:32,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:53:32,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:53:32,049 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:53:32,049 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:53:32,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-08-30 14:53:33,162 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:53:33,367 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:53:33,368 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-08-30 14:53:33,374 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/807bc13d9/7ba90fb370db48e3bc9daa3488ce88e5/FLAG999b5a031 [2023-08-30 14:53:33,385 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/807bc13d9/7ba90fb370db48e3bc9daa3488ce88e5 [2023-08-30 14:53:33,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:53:33,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:53:33,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:53:33,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:53:33,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:53:33,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:53:33" (1/1) ... [2023-08-30 14:53:33,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6432affb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33, skipping insertion in model container [2023-08-30 14:53:33,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:53:33" (1/1) ... [2023-08-30 14:53:33,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:53:33,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:53:33,594 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3305,3318] [2023-08-30 14:53:33,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:53:33,625 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:53:33,662 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3305,3318] [2023-08-30 14:53:33,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:53:33,690 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:53:33,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33 WrapperNode [2023-08-30 14:53:33,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:53:33,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:53:33,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:53:33,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:53:33,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33" (1/1) ... [2023-08-30 14:53:33,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33" (1/1) ... [2023-08-30 14:53:33,764 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 340 [2023-08-30 14:53:33,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:53:33,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:53:33,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:53:33,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:53:33,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33" (1/1) ... [2023-08-30 14:53:33,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33" (1/1) ... [2023-08-30 14:53:33,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33" (1/1) ... [2023-08-30 14:53:33,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33" (1/1) ... [2023-08-30 14:53:33,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33" (1/1) ... [2023-08-30 14:53:33,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33" (1/1) ... [2023-08-30 14:53:33,819 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33" (1/1) ... [2023-08-30 14:53:33,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33" (1/1) ... [2023-08-30 14:53:33,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:53:33,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:53:33,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:53:33,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:53:33,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33" (1/1) ... [2023-08-30 14:53:33,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:53:33,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:53:33,859 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 14:53:33,884 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 14:53:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:53:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:53:33,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:53:33,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:53:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:53:33,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:53:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:53:33,900 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:53:33,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:53:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:53:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:53:33,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:53:33,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:53:33,902 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 14:53:34,087 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:53:34,102 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:53:34,554 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:53:34,566 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:53:34,566 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 14:53:34,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:53:34 BoogieIcfgContainer [2023-08-30 14:53:34,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:53:34,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:53:34,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:53:34,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:53:34,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:53:33" (1/3) ... [2023-08-30 14:53:34,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c08088c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:53:34, skipping insertion in model container [2023-08-30 14:53:34,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:53:33" (2/3) ... [2023-08-30 14:53:34,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c08088c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:53:34, skipping insertion in model container [2023-08-30 14:53:34,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:53:34" (3/3) ... [2023-08-30 14:53:34,576 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-08-30 14:53:34,583 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:53:34,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:53:34,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-08-30 14:53:34,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:53:34,706 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:53:34,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 397 places, 422 transitions, 860 flow [2023-08-30 14:53:34,874 INFO L130 PetriNetUnfolder]: 32/420 cut-off events. [2023-08-30 14:53:34,875 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:53:34,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 420 events. 32/420 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 586 event pairs, 0 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 325. Up to 2 conditions per place. [2023-08-30 14:53:34,882 INFO L82 GeneralOperation]: Start removeDead. Operand has 397 places, 422 transitions, 860 flow [2023-08-30 14:53:34,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 381 places, 405 transitions, 822 flow [2023-08-30 14:53:34,892 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:53:34,900 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 381 places, 405 transitions, 822 flow [2023-08-30 14:53:34,902 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 381 places, 405 transitions, 822 flow [2023-08-30 14:53:34,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 381 places, 405 transitions, 822 flow [2023-08-30 14:53:34,994 INFO L130 PetriNetUnfolder]: 31/405 cut-off events. [2023-08-30 14:53:34,995 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:53:34,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 405 events. 31/405 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 582 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 325. Up to 2 conditions per place. [2023-08-30 14:53:35,005 INFO L119 LiptonReduction]: Number of co-enabled transitions 11900 [2023-08-30 14:53:53,964 INFO L134 LiptonReduction]: Checked pairs total: 14732 [2023-08-30 14:53:53,965 INFO L136 LiptonReduction]: Total number of compositions: 525 [2023-08-30 14:53:53,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:53:53,983 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;@326cdd4e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:53:53,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-08-30 14:53:53,985 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 14:53:53,985 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:53:53,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:53:53,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 14:53:53,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:53:53,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:53:53,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1667, now seen corresponding path program 1 times [2023-08-30 14:53:54,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:53:54,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813007078] [2023-08-30 14:53:54,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:54,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:53:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:54,095 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 14:53:54,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:53:54,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813007078] [2023-08-30 14:53:54,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813007078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:53:54,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:53:54,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 14:53:54,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242857710] [2023-08-30 14:53:54,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:53:54,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 14:53:54,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:53:54,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 14:53:54,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 14:53:54,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 395 out of 947 [2023-08-30 14:53:54,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 120 flow. Second operand has 2 states, 2 states have (on average 395.5) internal successors, (791), 2 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:54,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:53:54,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 395 of 947 [2023-08-30 14:53:54,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:53:54,350 INFO L130 PetriNetUnfolder]: 213/399 cut-off events. [2023-08-30 14:53:54,350 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 14:53:54,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 833 conditions, 399 events. 213/399 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1555 event pairs, 195 based on Foata normal form. 1/216 useless extension candidates. Maximal degree in co-relation 726. Up to 400 conditions per place. [2023-08-30 14:53:54,355 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 45 selfloop transitions, 0 changer transitions 1/46 dead transitions. [2023-08-30 14:53:54,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 196 flow [2023-08-30 14:53:54,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 14:53:54,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 14:53:54,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 844 transitions. [2023-08-30 14:53:54,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44561774023231254 [2023-08-30 14:53:54,376 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 844 transitions. [2023-08-30 14:53:54,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 844 transitions. [2023-08-30 14:53:54,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:53:54,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 844 transitions. [2023-08-30 14:53:54,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 422.0) internal successors, (844), 2 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:54,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 947.0) internal successors, (2841), 3 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:54,397 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 947.0) internal successors, (2841), 3 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:54,399 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 120 flow. Second operand 2 states and 844 transitions. [2023-08-30 14:53:54,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 196 flow [2023-08-30 14:53:54,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 14:53:54,426 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 93 flow [2023-08-30 14:53:54,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=93, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-08-30 14:53:54,432 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-08-30 14:53:54,433 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 93 flow [2023-08-30 14:53:54,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 395.5) internal successors, (791), 2 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:54,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:53:54,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:53:54,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:53:54,436 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:53:54,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:53:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash 53570, now seen corresponding path program 1 times [2023-08-30 14:53:54,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:53:54,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500479433] [2023-08-30 14:53:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:54,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:53:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:54,624 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 14:53:54,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:53:54,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500479433] [2023-08-30 14:53:54,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500479433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:53:54,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:53:54,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:53:54,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536778948] [2023-08-30 14:53:54,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:53:54,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:53:54,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:53:54,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:53:54,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:53:54,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 14:53:54,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:54,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:53:54,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 14:53:54,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:53:54,811 INFO L130 PetriNetUnfolder]: 213/396 cut-off events. [2023-08-30 14:53:54,811 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:53:54,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 396 events. 213/396 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 1532 event pairs, 195 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 804. Up to 396 conditions per place. [2023-08-30 14:53:54,813 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 14:53:54,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 175 flow [2023-08-30 14:53:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:53:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:53:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1212 transitions. [2023-08-30 14:53:54,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.426610348468849 [2023-08-30 14:53:54,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1212 transitions. [2023-08-30 14:53:54,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1212 transitions. [2023-08-30 14:53:54,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:53:54,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1212 transitions. [2023-08-30 14:53:54,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.0) internal successors, (1212), 3 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:54,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:54,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:54,827 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 93 flow. Second operand 3 states and 1212 transitions. [2023-08-30 14:53:54,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 175 flow [2023-08-30 14:53:54,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 175 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 14:53:54,829 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 91 flow [2023-08-30 14:53:54,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-08-30 14:53:54,830 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -12 predicate places. [2023-08-30 14:53:54,830 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 91 flow [2023-08-30 14:53:54,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:54,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:53:54,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:53:54,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:53:54,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:53:54,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:53:54,832 INFO L85 PathProgramCache]: Analyzing trace with hash 53574, now seen corresponding path program 1 times [2023-08-30 14:53:54,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:53:54,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458494936] [2023-08-30 14:53:54,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:54,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:53:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:54,891 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 14:53:54,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:53:54,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458494936] [2023-08-30 14:53:54,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458494936] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:53:54,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:53:54,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:53:54,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366476332] [2023-08-30 14:53:54,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:53:54,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:53:54,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:53:54,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:53:54,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:53:54,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 14:53:54,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:54,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:53:54,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 14:53:54,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:53:55,181 INFO L130 PetriNetUnfolder]: 425/787 cut-off events. [2023-08-30 14:53:55,182 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:53:55,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 787 events. 425/787 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3709 event pairs, 390 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 1599. Up to 397 conditions per place. [2023-08-30 14:53:55,186 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 77 selfloop transitions, 4 changer transitions 0/81 dead transitions. [2023-08-30 14:53:55,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 81 transitions, 332 flow [2023-08-30 14:53:55,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:53:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:53:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1252 transitions. [2023-08-30 14:53:55,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44068989792326646 [2023-08-30 14:53:55,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1252 transitions. [2023-08-30 14:53:55,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1252 transitions. [2023-08-30 14:53:55,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:53:55,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1252 transitions. [2023-08-30 14:53:55,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 417.3333333333333) internal successors, (1252), 3 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:55,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:55,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:55,200 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 91 flow. Second operand 3 states and 1252 transitions. [2023-08-30 14:53:55,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 81 transitions, 332 flow [2023-08-30 14:53:55,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 81 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:53:55,203 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 126 flow [2023-08-30 14:53:55,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-08-30 14:53:55,205 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -9 predicate places. [2023-08-30 14:53:55,208 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 126 flow [2023-08-30 14:53:55,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 389.6666666666667) internal successors, (1169), 3 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:55,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:53:55,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:53:55,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 14:53:55,210 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:53:55,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:53:55,211 INFO L85 PathProgramCache]: Analyzing trace with hash 53569, now seen corresponding path program 1 times [2023-08-30 14:53:55,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:53:55,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768667286] [2023-08-30 14:53:55,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:55,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:53:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:55,260 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 14:53:55,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:53:55,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768667286] [2023-08-30 14:53:55,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768667286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:53:55,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:53:55,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:53:55,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084890928] [2023-08-30 14:53:55,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:53:55,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:53:55,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:53:55,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:53:55,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:53:55,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 947 [2023-08-30 14:53:55,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 387.6666666666667) internal successors, (1163), 3 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:55,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:53:55,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 947 [2023-08-30 14:53:55,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:53:55,466 INFO L130 PetriNetUnfolder]: 425/783 cut-off events. [2023-08-30 14:53:55,467 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:53:55,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 783 events. 425/783 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3664 event pairs, 390 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 1606. Up to 783 conditions per place. [2023-08-30 14:53:55,470 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-30 14:53:55,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 210 flow [2023-08-30 14:53:55,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:53:55,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:53:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1204 transitions. [2023-08-30 14:53:55,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237944385779655 [2023-08-30 14:53:55,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1204 transitions. [2023-08-30 14:53:55,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1204 transitions. [2023-08-30 14:53:55,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:53:55,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1204 transitions. [2023-08-30 14:53:55,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 401.3333333333333) internal successors, (1204), 3 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:55,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:55,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:55,494 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 126 flow. Second operand 3 states and 1204 transitions. [2023-08-30 14:53:55,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 210 flow [2023-08-30 14:53:55,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:53:55,496 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 116 flow [2023-08-30 14:53:55,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-08-30 14:53:55,497 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-08-30 14:53:55,497 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 116 flow [2023-08-30 14:53:55,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 387.6666666666667) internal successors, (1163), 3 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:55,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:53:55,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:53:55,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 14:53:55,499 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:53:55,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:53:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1662381, now seen corresponding path program 1 times [2023-08-30 14:53:55,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:53:55,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123802585] [2023-08-30 14:53:55,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:55,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:53:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:53:55,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:53:55,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123802585] [2023-08-30 14:53:55,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123802585] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:53:55,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570512009] [2023-08-30 14:53:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:55,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:53:55,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:53:55,561 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 14:53:55,568 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 14:53:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:55,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:53:55,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:53:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:53:55,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:53:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:53:55,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570512009] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:53:55,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:53:55,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:53:55,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085572874] [2023-08-30 14:53:55,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:53:55,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:53:55,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:53:55,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:53:55,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:53:55,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 14:53:55,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 390.14285714285717) internal successors, (2731), 7 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:55,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:53:55,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 14:53:55,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:53:56,375 INFO L130 PetriNetUnfolder]: 1067/1956 cut-off events. [2023-08-30 14:53:56,375 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:53:56,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4005 conditions, 1956 events. 1067/1956 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11056 event pairs, 975 based on Foata normal form. 0/1071 useless extension candidates. Maximal degree in co-relation 4000. Up to 393 conditions per place. [2023-08-30 14:53:56,384 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 170 selfloop transitions, 21 changer transitions 0/191 dead transitions. [2023-08-30 14:53:56,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 191 transitions, 834 flow [2023-08-30 14:53:56,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:53:56,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:53:56,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2920 transitions. [2023-08-30 14:53:56,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44048876150248906 [2023-08-30 14:53:56,392 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2920 transitions. [2023-08-30 14:53:56,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2920 transitions. [2023-08-30 14:53:56,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:53:56,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2920 transitions. [2023-08-30 14:53:56,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 417.14285714285717) internal successors, (2920), 7 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:56,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 947.0) internal successors, (7576), 8 states have internal predecessors, (7576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:56,413 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 947.0) internal successors, (7576), 8 states have internal predecessors, (7576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:56,413 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 116 flow. Second operand 7 states and 2920 transitions. [2023-08-30 14:53:56,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 191 transitions, 834 flow [2023-08-30 14:53:56,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 191 transitions, 833 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:53:56,418 INFO L231 Difference]: Finished difference. Result has 53 places, 59 transitions, 254 flow [2023-08-30 14:53:56,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=254, PETRI_PLACES=53, PETRI_TRANSITIONS=59} [2023-08-30 14:53:56,420 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-08-30 14:53:56,420 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 59 transitions, 254 flow [2023-08-30 14:53:56,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 390.14285714285717) internal successors, (2731), 7 states have internal predecessors, (2731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:56,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:53:56,422 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 14:53:56,434 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 14:53:56,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:53:56,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:53:56,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:53:56,629 INFO L85 PathProgramCache]: Analyzing trace with hash 51535315, now seen corresponding path program 1 times [2023-08-30 14:53:56,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:53:56,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994481058] [2023-08-30 14:53:56,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:56,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:53:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:53:56,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:53:56,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994481058] [2023-08-30 14:53:56,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994481058] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:53:56,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270631966] [2023-08-30 14:53:56,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:56,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:53:56,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:53:56,737 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 14:53:56,750 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 14:53:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:56,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:53:56,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:53:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:53:56,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:53:56,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270631966] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:53:56,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:53:56,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 14:53:56,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586730908] [2023-08-30 14:53:56,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:53:56,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 14:53:56,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:53:56,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 14:53:56,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:53:56,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 14:53:56,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 59 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 389.8) internal successors, (1949), 5 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:56,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:53:56,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 14:53:56,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:53:57,436 INFO L130 PetriNetUnfolder]: 1061/1948 cut-off events. [2023-08-30 14:53:57,436 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 14:53:57,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 1948 events. 1061/1948 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11020 event pairs, 975 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 4006. Up to 1168 conditions per place. [2023-08-30 14:53:57,444 INFO L137 encePairwiseOnDemand]: 941/947 looper letters, 108 selfloop transitions, 9 changer transitions 0/117 dead transitions. [2023-08-30 14:53:57,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 117 transitions, 572 flow [2023-08-30 14:53:57,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 14:53:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 14:53:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2060 transitions. [2023-08-30 14:53:57,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350580781414995 [2023-08-30 14:53:57,450 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2060 transitions. [2023-08-30 14:53:57,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2060 transitions. [2023-08-30 14:53:57,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:53:57,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2060 transitions. [2023-08-30 14:53:57,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 412.0) internal successors, (2060), 5 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:57,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 947.0) internal successors, (5682), 6 states have internal predecessors, (5682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:57,463 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 947.0) internal successors, (5682), 6 states have internal predecessors, (5682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:57,463 INFO L175 Difference]: Start difference. First operand has 53 places, 59 transitions, 254 flow. Second operand 5 states and 2060 transitions. [2023-08-30 14:53:57,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 117 transitions, 572 flow [2023-08-30 14:53:57,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 117 transitions, 553 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:53:57,469 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 199 flow [2023-08-30 14:53:57,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2023-08-30 14:53:57,472 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-08-30 14:53:57,473 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 199 flow [2023-08-30 14:53:57,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 389.8) internal successors, (1949), 5 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:57,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:53:57,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:53:57,483 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 14:53:57,679 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,SelfDestructingSolverStorable5 [2023-08-30 14:53:57,680 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:53:57,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:53:57,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1664174, now seen corresponding path program 1 times [2023-08-30 14:53:57,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:53:57,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679209269] [2023-08-30 14:53:57,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:57,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:53:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:53:57,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:53:57,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679209269] [2023-08-30 14:53:57,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679209269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:53:57,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:53:57,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:53:57,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947133155] [2023-08-30 14:53:57,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:53:57,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:53:57,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:53:57,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:53:57,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:53:57,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 947 [2023-08-30 14:53:57,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 199 flow. Second operand has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:57,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:53:57,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 947 [2023-08-30 14:53:57,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:53:58,151 INFO L130 PetriNetUnfolder]: 1061/1943 cut-off events. [2023-08-30 14:53:58,151 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 14:53:58,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4003 conditions, 1943 events. 1061/1943 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11081 event pairs, 975 based on Foata normal form. 0/1078 useless extension candidates. Maximal degree in co-relation 3994. Up to 1943 conditions per place. [2023-08-30 14:53:58,160 INFO L137 encePairwiseOnDemand]: 945/947 looper letters, 49 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-08-30 14:53:58,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 50 transitions, 297 flow [2023-08-30 14:53:58,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:53:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:53:58,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1200 transitions. [2023-08-30 14:53:58,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42238648363252373 [2023-08-30 14:53:58,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1200 transitions. [2023-08-30 14:53:58,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1200 transitions. [2023-08-30 14:53:58,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:53:58,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1200 transitions. [2023-08-30 14:53:58,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:58,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:58,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:58,184 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 199 flow. Second operand 3 states and 1200 transitions. [2023-08-30 14:53:58,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 50 transitions, 297 flow [2023-08-30 14:53:58,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 284 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:53:58,187 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 186 flow [2023-08-30 14:53:58,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2023-08-30 14:53:58,188 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-30 14:53:58,188 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 186 flow [2023-08-30 14:53:58,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 388.0) internal successors, (1164), 3 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:58,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:53:58,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:53:58,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 14:53:58,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:53:58,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:53:58,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1664117, now seen corresponding path program 1 times [2023-08-30 14:53:58,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:53:58,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069828407] [2023-08-30 14:53:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:58,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:53:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:58,233 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 14:53:58,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:53:58,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069828407] [2023-08-30 14:53:58,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069828407] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:53:58,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:53:58,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:53:58,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281279469] [2023-08-30 14:53:58,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:53:58,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:53:58,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:53:58,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:53:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:53:58,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 14:53:58,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:58,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:53:58,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 14:53:58,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:53:58,583 INFO L130 PetriNetUnfolder]: 1061/1938 cut-off events. [2023-08-30 14:53:58,583 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 14:53:58,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3987 conditions, 1938 events. 1061/1938 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11053 event pairs, 975 based on Foata normal form. 0/1078 useless extension candidates. Maximal degree in co-relation 3978. Up to 1938 conditions per place. [2023-08-30 14:53:58,593 INFO L137 encePairwiseOnDemand]: 945/947 looper letters, 48 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-08-30 14:53:58,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 282 flow [2023-08-30 14:53:58,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:53:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:53:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1205 transitions. [2023-08-30 14:53:58,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42414642731432595 [2023-08-30 14:53:58,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1205 transitions. [2023-08-30 14:53:58,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1205 transitions. [2023-08-30 14:53:58,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:53:58,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1205 transitions. [2023-08-30 14:53:58,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 401.6666666666667) internal successors, (1205), 3 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:58,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:58,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:58,604 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 186 flow. Second operand 3 states and 1205 transitions. [2023-08-30 14:53:58,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 282 flow [2023-08-30 14:53:58,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:53:58,609 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 185 flow [2023-08-30 14:53:58,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2023-08-30 14:53:58,611 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-30 14:53:58,611 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 185 flow [2023-08-30 14:53:58,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.0) internal successors, (1170), 3 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:58,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:53:58,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 14:53:58,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 14:53:58,612 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:53:58,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:53:58,613 INFO L85 PathProgramCache]: Analyzing trace with hash 51594369, now seen corresponding path program 1 times [2023-08-30 14:53:58,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:53:58,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108559719] [2023-08-30 14:53:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:58,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:53:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:58,659 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 14:53:58,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:53:58,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108559719] [2023-08-30 14:53:58,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108559719] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:53:58,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:53:58,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:53:58,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210245174] [2023-08-30 14:53:58,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:53:58,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:53:58,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:53:58,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:53:58,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:53:58,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 14:53:58,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:58,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:53:58,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 14:53:58,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:53:59,300 INFO L130 PetriNetUnfolder]: 2111/3833 cut-off events. [2023-08-30 14:53:59,300 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 14:53:59,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7838 conditions, 3833 events. 2111/3833 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25124 event pairs, 1950 based on Foata normal form. 0/2133 useless extension candidates. Maximal degree in co-relation 7829. Up to 1939 conditions per place. [2023-08-30 14:53:59,320 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 71 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2023-08-30 14:53:59,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 390 flow [2023-08-30 14:53:59,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:53:59,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:53:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1234 transitions. [2023-08-30 14:53:59,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343541006687786 [2023-08-30 14:53:59,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1234 transitions. [2023-08-30 14:53:59,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1234 transitions. [2023-08-30 14:53:59,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:53:59,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1234 transitions. [2023-08-30 14:53:59,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 411.3333333333333) internal successors, (1234), 3 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:59,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:59,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:59,332 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 185 flow. Second operand 3 states and 1234 transitions. [2023-08-30 14:53:59,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 390 flow [2023-08-30 14:53:59,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 75 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:53:59,334 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 220 flow [2023-08-30 14:53:59,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2023-08-30 14:53:59,335 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2023-08-30 14:53:59,335 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 220 flow [2023-08-30 14:53:59,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 390.3333333333333) internal successors, (1171), 3 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:59,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:53:59,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 14:53:59,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 14:53:59,336 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:53:59,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:53:59,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1599428058, now seen corresponding path program 1 times [2023-08-30 14:53:59,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:53:59,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242826387] [2023-08-30 14:53:59,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:59,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:53:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:53:59,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:53:59,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242826387] [2023-08-30 14:53:59,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242826387] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:53:59,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293038492] [2023-08-30 14:53:59,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:53:59,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:53:59,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:53:59,381 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 14:53:59,409 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 14:53:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:53:59,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:53:59,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:53:59,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:53:59,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:53:59,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293038492] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:53:59,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:53:59,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 14:53:59,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823652901] [2023-08-30 14:53:59,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:53:59,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:53:59,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:53:59,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:53:59,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 14:53:59,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 947 [2023-08-30 14:53:59,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 388.6666666666667) internal successors, (1166), 3 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:53:59,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:53:59,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 947 [2023-08-30 14:53:59,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:54:00,065 INFO L130 PetriNetUnfolder]: 2110/3832 cut-off events. [2023-08-30 14:54:00,065 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 14:54:00,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7911 conditions, 3832 events. 2110/3832 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25081 event pairs, 1950 based on Foata normal form. 1/2153 useless extension candidates. Maximal degree in co-relation 7901. Up to 3832 conditions per place. [2023-08-30 14:54:00,082 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 49 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-30 14:54:00,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 318 flow [2023-08-30 14:54:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:54:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:54:00,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1200 transitions. [2023-08-30 14:54:00,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42238648363252373 [2023-08-30 14:54:00,086 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1200 transitions. [2023-08-30 14:54:00,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1200 transitions. [2023-08-30 14:54:00,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:54:00,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1200 transitions. [2023-08-30 14:54:00,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.0) internal successors, (1200), 3 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:00,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:00,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:00,093 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 220 flow. Second operand 3 states and 1200 transitions. [2023-08-30 14:54:00,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 318 flow [2023-08-30 14:54:00,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 51 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:54:00,095 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 212 flow [2023-08-30 14:54:00,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-08-30 14:54:00,096 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2023-08-30 14:54:00,096 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 212 flow [2023-08-30 14:54:00,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 388.6666666666667) internal successors, (1166), 3 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:00,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:54:00,097 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:54:00,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 14:54:00,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:54:00,303 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:54:00,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:54:00,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2014039290, now seen corresponding path program 2 times [2023-08-30 14:54:00,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:54:00,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675091203] [2023-08-30 14:54:00,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:54:00,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:54:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:54:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:54:00,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:54:00,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675091203] [2023-08-30 14:54:00,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675091203] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:54:00,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048066160] [2023-08-30 14:54:00,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:54:00,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:54:00,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:54:00,392 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 14:54:00,408 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 14:54:00,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:54:00,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:54:00,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:54:00,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:54:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:54:00,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:54:00,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048066160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:54:00,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:54:00,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:54:00,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086312191] [2023-08-30 14:54:00,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:54:00,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:54:00,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:54:00,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:54:00,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:54:00,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 947 [2023-08-30 14:54:00,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:00,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:54:00,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 947 [2023-08-30 14:54:00,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:54:01,118 INFO L130 PetriNetUnfolder]: 2110/3830 cut-off events. [2023-08-30 14:54:01,119 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 14:54:01,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7881 conditions, 3830 events. 2110/3830 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25121 event pairs, 1950 based on Foata normal form. 2/2142 useless extension candidates. Maximal degree in co-relation 7871. Up to 3830 conditions per place. [2023-08-30 14:54:01,137 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 48 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-08-30 14:54:01,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 290 flow [2023-08-30 14:54:01,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:54:01,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:54:01,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1210 transitions. [2023-08-30 14:54:01,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259063709961281 [2023-08-30 14:54:01,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1210 transitions. [2023-08-30 14:54:01,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1210 transitions. [2023-08-30 14:54:01,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:54:01,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1210 transitions. [2023-08-30 14:54:01,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.3333333333333) internal successors, (1210), 3 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:01,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:01,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:01,156 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 212 flow. Second operand 3 states and 1210 transitions. [2023-08-30 14:54:01,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 290 flow [2023-08-30 14:54:01,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 260 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-30 14:54:01,157 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 164 flow [2023-08-30 14:54:01,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-08-30 14:54:01,158 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-08-30 14:54:01,158 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 164 flow [2023-08-30 14:54:01,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:01,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:54:01,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 14:54:01,169 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 14:54:01,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:54:01,365 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:54:01,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:54:01,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2012210157, now seen corresponding path program 1 times [2023-08-30 14:54:01,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:54:01,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605913973] [2023-08-30 14:54:01,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:54:01,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:54:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:54:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:54:01,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:54:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605913973] [2023-08-30 14:54:01,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605913973] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:54:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423194419] [2023-08-30 14:54:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:54:01,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:54:01,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:54:01,429 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 14:54:01,432 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 14:54:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:54:01,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:54:01,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:54:01,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:54:01,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:54:01,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423194419] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:54:01,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:54:01,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2023-08-30 14:54:01,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089335119] [2023-08-30 14:54:01,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:54:01,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:54:01,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:54:01,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:54:01,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 14:54:01,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 947 [2023-08-30 14:54:01,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 382.5) internal successors, (1530), 4 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:01,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:54:01,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 947 [2023-08-30 14:54:01,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:54:02,109 INFO L130 PetriNetUnfolder]: 1689/3067 cut-off events. [2023-08-30 14:54:02,110 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:54:02,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 3067 events. 1689/3067 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 19397 event pairs, 1560 based on Foata normal form. 1/1715 useless extension candidates. Maximal degree in co-relation 6296. Up to 3062 conditions per place. [2023-08-30 14:54:02,122 INFO L137 encePairwiseOnDemand]: 942/947 looper letters, 42 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2023-08-30 14:54:02,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 262 flow [2023-08-30 14:54:02,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:54:02,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:54:02,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1562 transitions. [2023-08-30 14:54:02,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4123548046462513 [2023-08-30 14:54:02,127 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1562 transitions. [2023-08-30 14:54:02,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1562 transitions. [2023-08-30 14:54:02,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:54:02,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1562 transitions. [2023-08-30 14:54:02,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 390.5) internal successors, (1562), 4 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:02,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:02,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:02,140 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 164 flow. Second operand 4 states and 1562 transitions. [2023-08-30 14:54:02,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 262 flow [2023-08-30 14:54:02,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 261 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:54:02,142 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 186 flow [2023-08-30 14:54:02,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-30 14:54:02,143 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2023-08-30 14:54:02,143 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 186 flow [2023-08-30 14:54:02,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 382.5) internal successors, (1530), 4 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:02,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:54:02,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:54:02,150 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 14:54:02,350 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,SelfDestructingSolverStorable11 [2023-08-30 14:54:02,350 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:54:02,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:54:02,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2045520536, now seen corresponding path program 1 times [2023-08-30 14:54:02,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:54:02,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718690587] [2023-08-30 14:54:02,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:54:02,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:54:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:54:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:54:02,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:54:02,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718690587] [2023-08-30 14:54:02,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718690587] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:54:02,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008567594] [2023-08-30 14:54:02,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:54:02,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:54:02,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:54:02,405 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 14:54:02,408 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 14:54:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:54:02,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:54:02,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:54:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:54:02,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:54:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:54:02,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008567594] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:54:02,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:54:02,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 14:54:02,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599182931] [2023-08-30 14:54:02,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:54:02,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:54:02,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:54:02,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:54:02,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:54:02,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 14:54:02,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 390.7142857142857) internal successors, (2735), 7 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:02,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:54:02,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 14:54:02,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:54:03,908 INFO L130 PetriNetUnfolder]: 4233/7639 cut-off events. [2023-08-30 14:54:03,909 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 14:54:03,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15664 conditions, 7639 events. 4233/7639 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 56012 event pairs, 3900 based on Foata normal form. 0/4259 useless extension candidates. Maximal degree in co-relation 15657. Up to 1544 conditions per place. [2023-08-30 14:54:03,939 INFO L137 encePairwiseOnDemand]: 939/947 looper letters, 135 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2023-08-30 14:54:03,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 156 transitions, 754 flow [2023-08-30 14:54:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:54:03,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:54:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2874 transitions. [2023-08-30 14:54:03,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43354955498566905 [2023-08-30 14:54:03,947 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2874 transitions. [2023-08-30 14:54:03,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2874 transitions. [2023-08-30 14:54:03,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:54:03,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2874 transitions. [2023-08-30 14:54:03,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 410.57142857142856) internal successors, (2874), 7 states have internal predecessors, (2874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:03,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 947.0) internal successors, (7576), 8 states have internal predecessors, (7576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:03,963 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 947.0) internal successors, (7576), 8 states have internal predecessors, (7576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:03,963 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 186 flow. Second operand 7 states and 2874 transitions. [2023-08-30 14:54:03,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 156 transitions, 754 flow [2023-08-30 14:54:03,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 156 transitions, 740 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:54:03,965 INFO L231 Difference]: Finished difference. Result has 58 places, 64 transitions, 311 flow [2023-08-30 14:54:03,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=311, PETRI_PLACES=58, PETRI_TRANSITIONS=64} [2023-08-30 14:54:03,966 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-08-30 14:54:03,966 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 64 transitions, 311 flow [2023-08-30 14:54:03,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 390.7142857142857) internal successors, (2735), 7 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:03,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:54:03,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:54:03,979 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 14:54:04,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:54:04,174 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:54:04,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:54:04,174 INFO L85 PathProgramCache]: Analyzing trace with hash 2045520537, now seen corresponding path program 1 times [2023-08-30 14:54:04,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:54:04,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15418422] [2023-08-30 14:54:04,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:54:04,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:54:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:54:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:54:04,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:54:04,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15418422] [2023-08-30 14:54:04,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15418422] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:54:04,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:54:04,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:54:04,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994090189] [2023-08-30 14:54:04,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:54:04,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:54:04,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:54:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:54:04,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:54:04,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 947 [2023-08-30 14:54:04,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 64 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:04,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:54:04,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 947 [2023-08-30 14:54:04,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:54:05,151 INFO L130 PetriNetUnfolder]: 4209/7607 cut-off events. [2023-08-30 14:54:05,151 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 14:54:05,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15684 conditions, 7607 events. 4209/7607 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 55954 event pairs, 3900 based on Foata normal form. 8/4287 useless extension candidates. Maximal degree in co-relation 15674. Up to 7592 conditions per place. [2023-08-30 14:54:05,185 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-08-30 14:54:05,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 369 flow [2023-08-30 14:54:05,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:54:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:54:05,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1202 transitions. [2023-08-30 14:54:05,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230904611052446 [2023-08-30 14:54:05,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1202 transitions. [2023-08-30 14:54:05,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1202 transitions. [2023-08-30 14:54:05,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:54:05,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1202 transitions. [2023-08-30 14:54:05,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 400.6666666666667) internal successors, (1202), 3 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:05,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:05,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:05,200 INFO L175 Difference]: Start difference. First operand has 58 places, 64 transitions, 311 flow. Second operand 3 states and 1202 transitions. [2023-08-30 14:54:05,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 369 flow [2023-08-30 14:54:05,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 350 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 14:54:05,202 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 240 flow [2023-08-30 14:54:05,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2023-08-30 14:54:05,204 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-08-30 14:54:05,204 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 240 flow [2023-08-30 14:54:05,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 391.3333333333333) internal successors, (1174), 3 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:05,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:54:05,205 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 14:54:05,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 14:54:05,205 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:54:05,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:54:05,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1108892995, now seen corresponding path program 2 times [2023-08-30 14:54:05,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:54:05,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165985231] [2023-08-30 14:54:05,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:54:05,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:54:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:54:05,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 14:54:05,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:54:05,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165985231] [2023-08-30 14:54:05,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165985231] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:54:05,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77085510] [2023-08-30 14:54:05,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:54:05,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:54:05,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:54:05,339 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 14:54:05,343 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 14:54:05,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:54:05,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:54:05,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 14:54:05,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:54:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-30 14:54:05,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:54:05,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77085510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:54:05,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:54:05,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2023-08-30 14:54:05,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568019625] [2023-08-30 14:54:05,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:54:05,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:54:05,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:54:05,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:54:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:54:05,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 947 [2023-08-30 14:54:05,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:05,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:54:05,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 947 [2023-08-30 14:54:05,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:54:06,411 INFO L130 PetriNetUnfolder]: 4209/7599 cut-off events. [2023-08-30 14:54:06,411 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-08-30 14:54:06,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15597 conditions, 7599 events. 4209/7599 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 55827 event pairs, 3900 based on Foata normal form. 8/4283 useless extension candidates. Maximal degree in co-relation 15586. Up to 7584 conditions per place. [2023-08-30 14:54:06,439 INFO L137 encePairwiseOnDemand]: 944/947 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-30 14:54:06,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 328 flow [2023-08-30 14:54:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:54:06,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:54:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1206 transitions. [2023-08-30 14:54:06,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244984160506864 [2023-08-30 14:54:06,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1206 transitions. [2023-08-30 14:54:06,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1206 transitions. [2023-08-30 14:54:06,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:54:06,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1206 transitions. [2023-08-30 14:54:06,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:06,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:06,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 947.0) internal successors, (3788), 4 states have internal predecessors, (3788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:06,449 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 240 flow. Second operand 3 states and 1206 transitions. [2023-08-30 14:54:06,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 328 flow [2023-08-30 14:54:06,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 301 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 14:54:06,452 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 195 flow [2023-08-30 14:54:06,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2023-08-30 14:54:06,452 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-08-30 14:54:06,452 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 195 flow [2023-08-30 14:54:06,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 393.3333333333333) internal successors, (1180), 3 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:06,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:54:06,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:54:06,459 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 14:54:06,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:54:06,659 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:54:06,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:54:06,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1976135947, now seen corresponding path program 1 times [2023-08-30 14:54:06,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:54:06,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972389100] [2023-08-30 14:54:06,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:54:06,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:54:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:54:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 14:54:06,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:54:06,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972389100] [2023-08-30 14:54:06,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972389100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:54:06,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:54:06,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:54:06,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744423879] [2023-08-30 14:54:06,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:54:06,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:54:06,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:54:06,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:54:06,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:54:06,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 947 [2023-08-30 14:54:06,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 383.75) internal successors, (1535), 4 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:06,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:54:06,831 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 947 [2023-08-30 14:54:06,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:54:07,713 INFO L130 PetriNetUnfolder]: 4205/7595 cut-off events. [2023-08-30 14:54:07,713 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 14:54:07,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15533 conditions, 7595 events. 4205/7595 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 55746 event pairs, 3900 based on Foata normal form. 0/4259 useless extension candidates. Maximal degree in co-relation 15526. Up to 7591 conditions per place. [2023-08-30 14:54:07,740 INFO L137 encePairwiseOnDemand]: 943/947 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-08-30 14:54:07,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 297 flow [2023-08-30 14:54:07,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:54:07,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:54:07,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1557 transitions. [2023-08-30 14:54:07,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41103484688489966 [2023-08-30 14:54:07,745 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1557 transitions. [2023-08-30 14:54:07,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1557 transitions. [2023-08-30 14:54:07,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:54:07,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1557 transitions. [2023-08-30 14:54:07,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 389.25) internal successors, (1557), 4 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:07,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:07,755 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:07,755 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 195 flow. Second operand 4 states and 1557 transitions. [2023-08-30 14:54:07,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 297 flow [2023-08-30 14:54:07,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 53 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:54:07,757 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 196 flow [2023-08-30 14:54:07,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2023-08-30 14:54:07,758 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -3 predicate places. [2023-08-30 14:54:07,758 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 196 flow [2023-08-30 14:54:07,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 383.75) internal successors, (1535), 4 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:07,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:54:07,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:54:07,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 14:54:07,759 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:54:07,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:54:07,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1840415850, now seen corresponding path program 1 times [2023-08-30 14:54:07,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:54:07,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375293041] [2023-08-30 14:54:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:54:07,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:54:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:54:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 14:54:07,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:54:07,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375293041] [2023-08-30 14:54:07,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375293041] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:54:07,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:54:07,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:54:07,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039479303] [2023-08-30 14:54:07,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:54:07,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 14:54:07,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:54:07,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 14:54:07,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 14:54:07,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 947 [2023-08-30 14:54:07,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:07,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:54:07,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 947 [2023-08-30 14:54:07,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:54:08,863 INFO L130 PetriNetUnfolder]: 3369/6091 cut-off events. [2023-08-30 14:54:08,863 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 14:54:08,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12486 conditions, 6091 events. 3369/6091 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 43310 event pairs, 3120 based on Foata normal form. 4/3423 useless extension candidates. Maximal degree in co-relation 12479. Up to 6075 conditions per place. [2023-08-30 14:54:08,881 INFO L137 encePairwiseOnDemand]: 943/947 looper letters, 47 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2023-08-30 14:54:08,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 302 flow [2023-08-30 14:54:08,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 14:54:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 14:54:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1557 transitions. [2023-08-30 14:54:08,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41103484688489966 [2023-08-30 14:54:08,886 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1557 transitions. [2023-08-30 14:54:08,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1557 transitions. [2023-08-30 14:54:08,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:54:08,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1557 transitions. [2023-08-30 14:54:08,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 389.25) internal successors, (1557), 4 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:08,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:08,894 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 947.0) internal successors, (4735), 5 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:08,894 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 196 flow. Second operand 4 states and 1557 transitions. [2023-08-30 14:54:08,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 302 flow [2023-08-30 14:54:08,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 296 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 14:54:08,896 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 209 flow [2023-08-30 14:54:08,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=947, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-08-30 14:54:08,896 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2023-08-30 14:54:08,896 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 209 flow [2023-08-30 14:54:08,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:54:08,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:54:08,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:54:08,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 14:54:08,897 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2023-08-30 14:54:08,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:54:08,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1414178633, now seen corresponding path program 1 times [2023-08-30 14:54:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:54:08,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940389315] [2023-08-30 14:54:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:54:08,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:54:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:54:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:54:09,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:54:09,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940389315] [2023-08-30 14:54:09,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940389315] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:54:09,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731067902] [2023-08-30 14:54:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:54:09,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:54:09,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:54:09,745 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 14:54:09,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 14:54:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:54:09,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 14:54:09,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:54:09,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 14:54:10,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 14:54:10,070 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-30 14:54:10,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-30 14:54:10,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:54:10,204 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-08-30 14:54:10,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-08-30 14:54:10,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:54:10,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:54:10,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:54:10,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:54:10,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:54:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 14:54:10,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:54:25,259 WARN L222 SmtUtils]: Spent 14.37s on a formula simplification. DAG size of input: 57 DAG size of output: 39 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 14:54:25,531 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* c_~id_3~0 4) c_~get_5~0.offset))) (and (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~id_0~0 Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse0 (select (select .cse1 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (< .cse0 0) (<= (select (select .cse1 c_~get_5~0.base) .cse2) (+ .cse0 2147483647)) (< 0 .cse0))))) (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~contains_key_1~0.offset Int) (~id_0~0 Int) (~contains_key_1~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse4 (select (select .cse3 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (not (= (mod (select (select .cse3 ~contains_key_1~0.base) (+ ~id_0~0 ~contains_key_1~0.offset)) 256) 0)) (<= .cse4 0) (<= (select (select .cse3 c_~get_5~0.base) .cse2) (+ .cse4 2147483647)) (< 9223372039002259455 .cse4))))))) is different from false [2023-08-30 14:54:25,592 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ (* c_~id_3~0 4) c_~get_5~0.offset))) (and (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_457 (Array Int Int)) (v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~contains_key_1~0.offset Int) (~id_0~0 Int) (~contains_key_1~0.base Int)) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_457) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse0 (select (select .cse1 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (<= .cse0 0) (<= (select (select .cse1 c_~get_5~0.base) .cse2) (+ 2147483647 .cse0)) (< 9223372039002259455 .cse0) (not (= (mod (select (select .cse1 ~contains_key_1~0.base) (+ ~id_0~0 ~contains_key_1~0.offset)) 256) 0)))))) (forall ((v_ArrVal_458 (Array Int Int)) (v_ArrVal_457 (Array Int Int)) (v_ArrVal_459 (Array Int Int)) (~get_2~0.base Int) (~get_2~0.offset Int) (~id_0~0 Int)) (let ((.cse4 (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_bool_array_~arr~1#1.base| v_ArrVal_457) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_458) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_459))) (let ((.cse3 (select (select .cse4 ~get_2~0.base) (+ (* ~id_0~0 4) ~get_2~0.offset)))) (or (< .cse3 0) (<= (select (select .cse4 c_~get_5~0.base) .cse2) (+ 2147483647 .cse3)) (< 0 .cse3))))))) is different from false [2023-08-30 14:54:26,373 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:54:26,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 347 treesize of output 252 [2023-08-30 14:54:26,717 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:54:26,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2690025 treesize of output 2591626 [2023-08-30 14:54:31,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:54:31,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 14905 treesize of output 14532 [2023-08-30 14:54:32,010 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:54:32,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 14489 treesize of output 14324 [2023-08-30 14:54:32,315 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:54:32,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 14281 treesize of output 13492 [2023-08-30 14:54:32,586 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:54:32,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 13449 treesize of output 11828 [2023-08-30 14:54:32,824 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:54:32,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11785 treesize of output 11598 [2023-08-30 14:54:33,083 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:54:33,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11581 treesize of output 11190 [2023-08-30 14:54:33,367 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:54:33,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11173 treesize of output 10374 [2023-08-30 14:54:33,621 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:54:33,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 10357 treesize of output 8742 Killed by 15