./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-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-chromosome-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 c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f --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 14:44:05,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 14:44:05,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 14:44:05,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 14:44:05,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 14:44:05,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 14:44:05,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 14:44:05,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 14:44:05,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 14:44:05,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 14:44:05,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 14:44:05,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 14:44:05,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 14:44:05,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 14:44:05,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 14:44:05,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 14:44:05,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 14:44:05,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 14:44:05,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 14:44:05,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 14:44:05,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 14:44:05,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 14:44:05,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 14:44:05,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 14:44:05,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 14:44:05,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 14:44:05,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 14:44:05,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 14:44:05,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 14:44:05,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 14:44:05,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 14:44:05,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 14:44:05,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 14:44:05,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 14:44:05,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 14:44:05,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 14:44:05,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 14:44:05,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 14:44:05,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 14:44:05,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 14:44:05,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 14:44:05,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 14:44:05,680 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 14:44:05,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 14:44:05,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 14:44:05,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 14:44:05,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 14:44:05,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 14:44:05,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 14:44:05,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 14:44:05,683 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 14:44:05,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 14:44:05,684 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 14:44:05,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 14:44:05,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 14:44:05,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 14:44:05,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 14:44:05,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 14:44:05,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 14:44:05,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 14:44:05,686 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 14:44:05,686 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 14:44:05,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 14:44:05,686 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 14:44:05,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 14:44:05,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 14:44:05,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 14:44:05,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 14:44:05,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:44:05,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 14:44:05,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 14:44:05,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 14:44:05,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 14:44:05,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 14:44:05,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 14:44:05,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 14:44:05,689 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 14:44:05,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 14:44:05,689 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 14:44:05,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7fdb1595c27c144c3bf111946260cb3946663200a2d53f7fba5455031291c4f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 14:44:05,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 14:44:05,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 14:44:05,996 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 14:44:05,997 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 14:44:05,997 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 14:44:05,999 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c [2023-08-30 14:44:07,031 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 14:44:07,216 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 14:44:07,217 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-symm.wvr.c [2023-08-30 14:44:07,226 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d05cc0665/0b6f57d203cb452a89d15cd9e4448b90/FLAGaa354e8cf [2023-08-30 14:44:07,237 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d05cc0665/0b6f57d203cb452a89d15cd9e4448b90 [2023-08-30 14:44:07,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 14:44:07,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 14:44:07,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 14:44:07,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 14:44:07,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 14:44:07,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:44:07" (1/1) ... [2023-08-30 14:44:07,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc95b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07, skipping insertion in model container [2023-08-30 14:44:07,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:44:07" (1/1) ... [2023-08-30 14:44:07,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 14:44:07,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 14:44:07,457 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-chromosome-symm.wvr.c[2695,2708] [2023-08-30 14:44:07,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:44:07,478 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 14:44:07,514 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-chromosome-symm.wvr.c[2695,2708] [2023-08-30 14:44:07,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 14:44:07,537 INFO L208 MainTranslator]: Completed translation [2023-08-30 14:44:07,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07 WrapperNode [2023-08-30 14:44:07,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 14:44:07,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 14:44:07,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 14:44:07,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 14:44:07,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07" (1/1) ... [2023-08-30 14:44:07,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07" (1/1) ... [2023-08-30 14:44:07,600 INFO L138 Inliner]: procedures = 25, calls = 37, calls flagged for inlining = 15, calls inlined = 19, statements flattened = 234 [2023-08-30 14:44:07,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 14:44:07,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 14:44:07,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 14:44:07,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 14:44:07,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07" (1/1) ... [2023-08-30 14:44:07,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07" (1/1) ... [2023-08-30 14:44:07,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07" (1/1) ... [2023-08-30 14:44:07,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07" (1/1) ... [2023-08-30 14:44:07,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07" (1/1) ... [2023-08-30 14:44:07,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07" (1/1) ... [2023-08-30 14:44:07,649 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07" (1/1) ... [2023-08-30 14:44:07,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07" (1/1) ... [2023-08-30 14:44:07,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 14:44:07,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 14:44:07,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 14:44:07,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 14:44:07,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07" (1/1) ... [2023-08-30 14:44:07,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 14:44:07,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:07,702 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 14:44:07,714 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 14:44:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 14:44:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 14:44:07,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 14:44:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 14:44:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 14:44:07,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 14:44:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 14:44:07,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 14:44:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 14:44:07,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 14:44:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 14:44:07,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 14:44:07,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 14:44:07,744 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 14:44:07,879 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 14:44:07,880 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 14:44:08,258 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 14:44:08,269 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 14:44:08,270 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 14:44:08,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:44:08 BoogieIcfgContainer [2023-08-30 14:44:08,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 14:44:08,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 14:44:08,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 14:44:08,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 14:44:08,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:44:07" (1/3) ... [2023-08-30 14:44:08,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1574d33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:44:08, skipping insertion in model container [2023-08-30 14:44:08,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:44:07" (2/3) ... [2023-08-30 14:44:08,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1574d33c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:44:08, skipping insertion in model container [2023-08-30 14:44:08,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:44:08" (3/3) ... [2023-08-30 14:44:08,299 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2023-08-30 14:44:08,306 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 14:44:08,312 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 14:44:08,312 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-08-30 14:44:08,312 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 14:44:08,440 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 14:44:08,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 289 transitions, 594 flow [2023-08-30 14:44:08,558 INFO L130 PetriNetUnfolder]: 25/287 cut-off events. [2023-08-30 14:44:08,558 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 14:44:08,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 287 events. 25/287 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 504 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-08-30 14:44:08,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 289 transitions, 594 flow [2023-08-30 14:44:08,586 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 259 transitions, 527 flow [2023-08-30 14:44:08,592 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 14:44:08,604 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 259 transitions, 527 flow [2023-08-30 14:44:08,610 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 259 transitions, 527 flow [2023-08-30 14:44:08,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 259 transitions, 527 flow [2023-08-30 14:44:08,692 INFO L130 PetriNetUnfolder]: 22/259 cut-off events. [2023-08-30 14:44:08,693 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 14:44:08,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 259 events. 22/259 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 395 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 183. Up to 2 conditions per place. [2023-08-30 14:44:08,704 INFO L119 LiptonReduction]: Number of co-enabled transitions 12212 [2023-08-30 14:44:20,911 INFO L134 LiptonReduction]: Checked pairs total: 12635 [2023-08-30 14:44:20,911 INFO L136 LiptonReduction]: Total number of compositions: 326 [2023-08-30 14:44:20,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 14:44:20,928 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;@3b619052, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 14:44:20,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-08-30 14:44:20,931 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 14:44:20,931 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 14:44:20,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:20,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 14:44:20,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 14:44:20,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:20,936 INFO L85 PathProgramCache]: Analyzing trace with hash 37235, now seen corresponding path program 1 times [2023-08-30 14:44:20,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:20,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568817610] [2023-08-30 14:44:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:20,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:21,208 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 14:44:21,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:21,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568817610] [2023-08-30 14:44:21,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568817610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:21,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:44:21,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 14:44:21,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590221368] [2023-08-30 14:44:21,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:21,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:21,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:21,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:44:21,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 615 [2023-08-30 14:44:21,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:21,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:21,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 615 [2023-08-30 14:44:21,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:21,656 INFO L130 PetriNetUnfolder]: 557/959 cut-off events. [2023-08-30 14:44:21,657 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-30 14:44:21,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1982 conditions, 959 events. 557/959 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4647 event pairs, 474 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 900. Up to 483 conditions per place. [2023-08-30 14:44:21,663 INFO L137 encePairwiseOnDemand]: 602/615 looper letters, 57 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-08-30 14:44:21,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 61 transitions, 262 flow [2023-08-30 14:44:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:21,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:21,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 858 transitions. [2023-08-30 14:44:21,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46504065040650405 [2023-08-30 14:44:21,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 858 transitions. [2023-08-30 14:44:21,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 858 transitions. [2023-08-30 14:44:21,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:21,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 858 transitions. [2023-08-30 14:44:21,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.0) internal successors, (858), 3 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:21,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:21,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:21,702 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 85 flow. Second operand 3 states and 858 transitions. [2023-08-30 14:44:21,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 61 transitions, 262 flow [2023-08-30 14:44:21,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 61 transitions, 252 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 14:44:21,709 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 106 flow [2023-08-30 14:44:21,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-08-30 14:44:21,715 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2023-08-30 14:44:21,716 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 106 flow [2023-08-30 14:44:21,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:21,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:21,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:44:21,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 14:44:21,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 14:44:21,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:21,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1156707, now seen corresponding path program 1 times [2023-08-30 14:44:21,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:21,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403030141] [2023-08-30 14:44:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:21,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:21,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:21,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403030141] [2023-08-30 14:44:21,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403030141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:21,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:44:21,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:44:21,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789368359] [2023-08-30 14:44:21,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:21,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:21,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:21,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:21,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:44:21,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 615 [2023-08-30 14:44:21,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:21,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:21,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 615 [2023-08-30 14:44:21,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:21,961 INFO L130 PetriNetUnfolder]: 557/957 cut-off events. [2023-08-30 14:44:21,961 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 14:44:21,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1973 conditions, 957 events. 557/957 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 4763 event pairs, 474 based on Foata normal form. 0/439 useless extension candidates. Maximal degree in co-relation 975. Up to 957 conditions per place. [2023-08-30 14:44:21,965 INFO L137 encePairwiseOnDemand]: 612/615 looper letters, 33 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-30 14:44:21,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 34 transitions, 166 flow [2023-08-30 14:44:21,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:21,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:21,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2023-08-30 14:44:21,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44227642276422763 [2023-08-30 14:44:21,968 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2023-08-30 14:44:21,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2023-08-30 14:44:21,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:21,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2023-08-30 14:44:21,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:21,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:21,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:21,975 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 106 flow. Second operand 3 states and 816 transitions. [2023-08-30 14:44:21,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 34 transitions, 166 flow [2023-08-30 14:44:21,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:44:21,977 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 92 flow [2023-08-30 14:44:21,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2023-08-30 14:44:21,977 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -6 predicate places. [2023-08-30 14:44:21,978 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 92 flow [2023-08-30 14:44:21,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:21,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:21,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 14:44:21,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 14:44:21,979 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 14:44:21,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:21,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1156750, now seen corresponding path program 1 times [2023-08-30 14:44:21,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:21,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896298608] [2023-08-30 14:44:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:21,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:22,050 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 14:44:22,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:22,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896298608] [2023-08-30 14:44:22,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896298608] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:22,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582324335] [2023-08-30 14:44:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:22,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:22,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:22,057 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 14:44:22,084 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 14:44:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:22,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 14:44:22,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:22,207 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 14:44:22,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:44:22,237 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 14:44:22,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582324335] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:44:22,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:44:22,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 14:44:22,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210252955] [2023-08-30 14:44:22,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:44:22,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 14:44:22,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:22,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 14:44:22,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 14:44:22,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 615 [2023-08-30 14:44:22,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 92 flow. Second operand has 7 states, 7 states have (on average 262.14285714285717) internal successors, (1835), 7 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:22,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:22,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 615 [2023-08-30 14:44:22,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:22,832 INFO L130 PetriNetUnfolder]: 1391/2388 cut-off events. [2023-08-30 14:44:22,833 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2023-08-30 14:44:22,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4904 conditions, 2388 events. 1391/2388 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 13344 event pairs, 1185 based on Foata normal form. 0/1091 useless extension candidates. Maximal degree in co-relation 4896. Up to 481 conditions per place. [2023-08-30 14:44:22,842 INFO L137 encePairwiseOnDemand]: 609/615 looper letters, 130 selfloop transitions, 13 changer transitions 0/143 dead transitions. [2023-08-30 14:44:22,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 143 transitions, 630 flow [2023-08-30 14:44:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:44:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:44:22,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1715 transitions. [2023-08-30 14:44:22,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46476964769647694 [2023-08-30 14:44:22,847 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1715 transitions. [2023-08-30 14:44:22,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1715 transitions. [2023-08-30 14:44:22,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:22,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1715 transitions. [2023-08-30 14:44:22,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.8333333333333) internal successors, (1715), 6 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:22,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:22,859 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:22,859 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 92 flow. Second operand 6 states and 1715 transitions. [2023-08-30 14:44:22,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 143 transitions, 630 flow [2023-08-30 14:44:22,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 143 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:44:22,864 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 184 flow [2023-08-30 14:44:22,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-08-30 14:44:22,865 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-08-30 14:44:22,865 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 184 flow [2023-08-30 14:44:22,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 262.14285714285717) internal successors, (1835), 7 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:22,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:22,867 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 14:44:22,880 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 14:44:23,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:23,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 14:44:23,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash 102124958, now seen corresponding path program 2 times [2023-08-30 14:44:23,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:23,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13447023] [2023-08-30 14:44:23,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:23,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:23,182 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 14:44:23,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:23,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13447023] [2023-08-30 14:44:23,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13447023] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:23,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174502779] [2023-08-30 14:44:23,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:44:23,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:23,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:23,185 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 14:44:23,187 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 14:44:23,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 14:44:23,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:44:23,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:44:23,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:23,270 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 14:44:23,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 14:44:23,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174502779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:23,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 14:44:23,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 14:44:23,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464300794] [2023-08-30 14:44:23,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:23,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:23,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:23,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:23,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:44:23,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 615 [2023-08-30 14:44:23,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:23,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:23,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 615 [2023-08-30 14:44:23,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:23,685 INFO L130 PetriNetUnfolder]: 1391/2386 cut-off events. [2023-08-30 14:44:23,685 INFO L131 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2023-08-30 14:44:23,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4925 conditions, 2386 events. 1391/2386 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 14012 event pairs, 1185 based on Foata normal form. 2/1096 useless extension candidates. Maximal degree in co-relation 4913. Up to 2386 conditions per place. [2023-08-30 14:44:23,695 INFO L137 encePairwiseOnDemand]: 612/615 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 14:44:23,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 41 transitions, 246 flow [2023-08-30 14:44:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:23,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:23,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 820 transitions. [2023-08-30 14:44:23,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-30 14:44:23,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 820 transitions. [2023-08-30 14:44:23,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 820 transitions. [2023-08-30 14:44:23,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:23,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 820 transitions. [2023-08-30 14:44:23,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:23,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:23,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:23,704 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 184 flow. Second operand 3 states and 820 transitions. [2023-08-30 14:44:23,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 41 transitions, 246 flow [2023-08-30 14:44:23,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 201 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 14:44:23,706 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 121 flow [2023-08-30 14:44:23,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-08-30 14:44:23,707 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -4 predicate places. [2023-08-30 14:44:23,707 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 121 flow [2023-08-30 14:44:23,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 264.0) internal successors, (792), 3 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:23,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:23,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:23,716 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 14:44:23,913 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,SelfDestructingSolverStorable3 [2023-08-30 14:44:23,914 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 14:44:23,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:23,914 INFO L85 PathProgramCache]: Analyzing trace with hash -169429443, now seen corresponding path program 1 times [2023-08-30 14:44:23,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:23,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690985609] [2023-08-30 14:44:23,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:23,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:24,006 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 14:44:24,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:24,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690985609] [2023-08-30 14:44:24,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690985609] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:24,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:44:24,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 14:44:24,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799316536] [2023-08-30 14:44:24,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:24,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:24,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:24,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:24,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:44:24,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 615 [2023-08-30 14:44:24,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:24,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:24,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 615 [2023-08-30 14:44:24,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:24,294 INFO L130 PetriNetUnfolder]: 1113/1911 cut-off events. [2023-08-30 14:44:24,295 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-08-30 14:44:24,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 1911 events. 1113/1911 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 10821 event pairs, 948 based on Foata normal form. 1/876 useless extension candidates. Maximal degree in co-relation 3918. Up to 1907 conditions per place. [2023-08-30 14:44:24,303 INFO L137 encePairwiseOnDemand]: 610/615 looper letters, 33 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-08-30 14:44:24,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 197 flow [2023-08-30 14:44:24,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2023-08-30 14:44:24,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43902439024390244 [2023-08-30 14:44:24,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2023-08-30 14:44:24,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2023-08-30 14:44:24,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:24,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2023-08-30 14:44:24,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:24,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:24,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:24,313 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 121 flow. Second operand 3 states and 810 transitions. [2023-08-30 14:44:24,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 197 flow [2023-08-30 14:44:24,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 40 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:44:24,315 INFO L231 Difference]: Finished difference. Result has 39 places, 40 transitions, 139 flow [2023-08-30 14:44:24,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=40} [2023-08-30 14:44:24,316 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2023-08-30 14:44:24,316 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 40 transitions, 139 flow [2023-08-30 14:44:24,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:24,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:24,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:24,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 14:44:24,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 14:44:24,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:24,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1722786559, now seen corresponding path program 1 times [2023-08-30 14:44:24,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:24,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438693744] [2023-08-30 14:44:24,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:24,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:24,391 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 14:44:24,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:24,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438693744] [2023-08-30 14:44:24,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438693744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 14:44:24,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 14:44:24,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 14:44:24,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037009217] [2023-08-30 14:44:24,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 14:44:24,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 14:44:24,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:24,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 14:44:24,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 14:44:24,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 615 [2023-08-30 14:44:24,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 40 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:24,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:24,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 615 [2023-08-30 14:44:24,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:24,857 INFO L130 PetriNetUnfolder]: 1905/3271 cut-off events. [2023-08-30 14:44:24,858 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-30 14:44:24,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6717 conditions, 3271 events. 1905/3271 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 21197 event pairs, 948 based on Foata normal form. 0/1495 useless extension candidates. Maximal degree in co-relation 6706. Up to 1912 conditions per place. [2023-08-30 14:44:24,872 INFO L137 encePairwiseOnDemand]: 611/615 looper letters, 58 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-08-30 14:44:24,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 60 transitions, 302 flow [2023-08-30 14:44:24,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 14:44:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 14:44:24,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 846 transitions. [2023-08-30 14:44:24,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585365853658537 [2023-08-30 14:44:24,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 846 transitions. [2023-08-30 14:44:24,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 846 transitions. [2023-08-30 14:44:24,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:24,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 846 transitions. [2023-08-30 14:44:24,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.0) internal successors, (846), 3 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:24,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:24,881 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 615.0) internal successors, (2460), 4 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:24,881 INFO L175 Difference]: Start difference. First operand has 39 places, 40 transitions, 139 flow. Second operand 3 states and 846 transitions. [2023-08-30 14:44:24,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 60 transitions, 302 flow [2023-08-30 14:44:24,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 60 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 14:44:24,883 INFO L231 Difference]: Finished difference. Result has 40 places, 41 transitions, 139 flow [2023-08-30 14:44:24,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=40, PETRI_TRANSITIONS=41} [2023-08-30 14:44:24,885 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2023-08-30 14:44:24,886 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 41 transitions, 139 flow [2023-08-30 14:44:24,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:24,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:24,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:24,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 14:44:24,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 14:44:24,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:24,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1722786499, now seen corresponding path program 1 times [2023-08-30 14:44:24,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:24,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209014183] [2023-08-30 14:44:24,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:24,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:24,959 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 14:44:24,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:24,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209014183] [2023-08-30 14:44:24,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209014183] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:24,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428031294] [2023-08-30 14:44:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:24,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:24,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:24,962 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 14:44:24,964 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 14:44:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:25,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 14:44:25,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:25,096 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 14:44:25,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:44:25,115 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 14:44:25,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428031294] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:44:25,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:44:25,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-30 14:44:25,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510143953] [2023-08-30 14:44:25,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:44:25,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 14:44:25,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:25,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 14:44:25,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-30 14:44:25,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 615 [2023-08-30 14:44:25,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 41 transitions, 139 flow. Second operand has 8 states, 8 states have (on average 257.125) internal successors, (2057), 8 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:25,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:25,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 615 [2023-08-30 14:44:25,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:25,348 INFO L130 PetriNetUnfolder]: 477/826 cut-off events. [2023-08-30 14:44:25,349 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-08-30 14:44:25,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1818 conditions, 826 events. 477/826 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3846 event pairs, 419 based on Foata normal form. 6/424 useless extension candidates. Maximal degree in co-relation 1807. Up to 819 conditions per place. [2023-08-30 14:44:25,359 INFO L137 encePairwiseOnDemand]: 610/615 looper letters, 28 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2023-08-30 14:44:25,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 200 flow [2023-08-30 14:44:25,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 14:44:25,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 14:44:25,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1573 transitions. [2023-08-30 14:44:25,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42628726287262875 [2023-08-30 14:44:25,364 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1573 transitions. [2023-08-30 14:44:25,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1573 transitions. [2023-08-30 14:44:25,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:25,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1573 transitions. [2023-08-30 14:44:25,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.1666666666667) internal successors, (1573), 6 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:25,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:25,374 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 615.0) internal successors, (4305), 7 states have internal predecessors, (4305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:25,374 INFO L175 Difference]: Start difference. First operand has 40 places, 41 transitions, 139 flow. Second operand 6 states and 1573 transitions. [2023-08-30 14:44:25,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 200 flow [2023-08-30 14:44:25,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 14:44:25,376 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 160 flow [2023-08-30 14:44:25,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=160, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-08-30 14:44:25,377 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2023-08-30 14:44:25,377 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 160 flow [2023-08-30 14:44:25,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 257.125) internal successors, (2057), 8 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:25,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:25,378 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:25,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 14:44:25,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:25,584 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 14:44:25,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:25,585 INFO L85 PathProgramCache]: Analyzing trace with hash -773726591, now seen corresponding path program 2 times [2023-08-30 14:44:25,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:25,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920068617] [2023-08-30 14:44:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:25,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:44:25,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:25,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920068617] [2023-08-30 14:44:25,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920068617] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:25,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953642772] [2023-08-30 14:44:25,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 14:44:25,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:25,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:25,748 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 14:44:25,751 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 14:44:25,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 14:44:25,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:44:25,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 14:44:25,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:25,947 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:44:25,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:44:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:44:26,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953642772] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:44:26,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:44:26,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-30 14:44:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303143014] [2023-08-30 14:44:26,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:44:26,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 14:44:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:26,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 14:44:26,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-30 14:44:26,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 615 [2023-08-30 14:44:26,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 160 flow. Second operand has 17 states, 17 states have (on average 256.52941176470586) internal successors, (4361), 17 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:26,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:44:26,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 615 [2023-08-30 14:44:26,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:44:26,331 INFO L130 PetriNetUnfolder]: 477/828 cut-off events. [2023-08-30 14:44:26,331 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-30 14:44:26,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 828 events. 477/828 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 3846 event pairs, 419 based on Foata normal form. 2/422 useless extension candidates. Maximal degree in co-relation 1813. Up to 819 conditions per place. [2023-08-30 14:44:26,336 INFO L137 encePairwiseOnDemand]: 610/615 looper letters, 28 selfloop transitions, 12 changer transitions 0/40 dead transitions. [2023-08-30 14:44:26,336 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 40 transitions, 248 flow [2023-08-30 14:44:26,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 14:44:26,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 14:44:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1826 transitions. [2023-08-30 14:44:26,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42415795586527294 [2023-08-30 14:44:26,341 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1826 transitions. [2023-08-30 14:44:26,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1826 transitions. [2023-08-30 14:44:26,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:44:26,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1826 transitions. [2023-08-30 14:44:26,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 260.85714285714283) internal successors, (1826), 7 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:26,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 615.0) internal successors, (4920), 8 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:26,351 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 615.0) internal successors, (4920), 8 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:26,351 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 160 flow. Second operand 7 states and 1826 transitions. [2023-08-30 14:44:26,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 40 transitions, 248 flow [2023-08-30 14:44:26,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 228 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 14:44:26,355 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 182 flow [2023-08-30 14:44:26,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=182, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-08-30 14:44:26,357 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2023-08-30 14:44:26,357 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 182 flow [2023-08-30 14:44:26,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 256.52941176470586) internal successors, (4361), 17 states have internal predecessors, (4361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:44:26,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:44:26,370 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:44:26,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 14:44:26,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:26,575 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 14:44:26,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:44:26,575 INFO L85 PathProgramCache]: Analyzing trace with hash -157181373, now seen corresponding path program 3 times [2023-08-30 14:44:26,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:44:26,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859313361] [2023-08-30 14:44:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:44:26,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:44:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:44:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:44:27,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:44:27,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859313361] [2023-08-30 14:44:27,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859313361] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:44:27,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413090953] [2023-08-30 14:44:27,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 14:44:27,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:44:27,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:44:27,942 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 14:44:27,951 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 14:44:28,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 14:44:28,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 14:44:28,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 14:44:28,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:44:28,179 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 14:44:28,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:44:28,236 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 21 treesize of output 20 [2023-08-30 14:44:28,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:44:28,294 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 21 treesize of output 20 [2023-08-30 14:44:28,350 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 14:44:28,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2023-08-30 14:44:28,425 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 14:44:28,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 28 [2023-08-30 14:44:28,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:44:28,487 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 14:44:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-30 14:44:28,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:44:45,968 INFO L321 Elim1Store]: treesize reduction 212, result has 30.5 percent of original size [2023-08-30 14:44:45,969 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 5 case distinctions, treesize of input 50 treesize of output 103 [2023-08-30 14:44:46,045 INFO L321 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-08-30 14:44:46,046 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 102 treesize of output 122 [2023-08-30 14:44:46,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-08-30 14:44:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-30 14:44:46,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413090953] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 14:44:46,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 14:44:46,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 30 [2023-08-30 14:44:46,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465862889] [2023-08-30 14:44:46,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 14:44:46,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-30 14:44:46,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 14:44:46,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-30 14:44:46,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=796, Unknown=9, NotChecked=0, Total=992 [2023-08-30 14:44:47,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:44:50,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:44:52,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:44:54,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:44:57,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:44:59,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:01,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:03,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:05,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:07,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:10,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:12,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:14,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:16,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:18,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:21,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:23,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:25,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:27,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:29,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:31,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:33,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:36,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:38,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:40,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:41,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:43,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 14:45:43,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 615 [2023-08-30 14:45:44,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 182 flow. Second operand has 32 states, 32 states have (on average 219.21875) internal successors, (7015), 32 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:45:44,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 14:45:44,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 615 [2023-08-30 14:45:44,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 14:45:44,598 INFO L130 PetriNetUnfolder]: 540/1026 cut-off events. [2023-08-30 14:45:44,599 INFO L131 PetriNetUnfolder]: For 69/69 co-relation queries the response was YES. [2023-08-30 14:45:44,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 1026 events. 540/1026 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5933 event pairs, 211 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 2232. Up to 658 conditions per place. [2023-08-30 14:45:44,604 INFO L137 encePairwiseOnDemand]: 601/615 looper letters, 40 selfloop transitions, 28 changer transitions 0/68 dead transitions. [2023-08-30 14:45:44,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 386 flow [2023-08-30 14:45:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 14:45:44,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 14:45:44,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2902 transitions. [2023-08-30 14:45:44,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629768605378361 [2023-08-30 14:45:44,612 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2902 transitions. [2023-08-30 14:45:44,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2902 transitions. [2023-08-30 14:45:44,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 14:45:44,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2902 transitions. [2023-08-30 14:45:44,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 223.23076923076923) internal successors, (2902), 13 states have internal predecessors, (2902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:45:44,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 615.0) internal successors, (8610), 14 states have internal predecessors, (8610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:45:44,627 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 615.0) internal successors, (8610), 14 states have internal predecessors, (8610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:45:44,627 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 182 flow. Second operand 13 states and 2902 transitions. [2023-08-30 14:45:44,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 386 flow [2023-08-30 14:45:44,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 366 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-30 14:45:44,630 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 274 flow [2023-08-30 14:45:44,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=615, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-08-30 14:45:44,631 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-08-30 14:45:44,631 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 274 flow [2023-08-30 14:45:44,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 219.21875) internal successors, (7015), 32 states have internal predecessors, (7015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 14:45:44,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 14:45:44,633 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 14:45:44,641 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 14:45:44,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:45:44,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2023-08-30 14:45:44,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 14:45:44,839 INFO L85 PathProgramCache]: Analyzing trace with hash -157181320, now seen corresponding path program 1 times [2023-08-30 14:45:44,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 14:45:44,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16829758] [2023-08-30 14:45:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:45:44,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 14:45:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:45:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 14:45:45,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 14:45:45,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16829758] [2023-08-30 14:45:45,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16829758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 14:45:45,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019818986] [2023-08-30 14:45:45,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 14:45:45,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 14:45:45,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 14:45:45,652 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 14:45:45,654 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 14:45:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 14:45:45,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-30 14:45:45,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 14:45:45,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:45:45,800 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2023-08-30 14:45:45,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2023-08-30 14:45:45,833 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 14:45:45,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 14:45:45,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 14:45:45,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 14:45:45,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 14:45:46,030 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 14:45:46,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-30 14:45:46,073 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 14:45:46,112 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 14:45:46,151 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 14:45:46,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 14:45:46,240 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 14:45:46,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 14:45:46,277 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 14:45:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 14:45:46,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 14:45:46,704 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_372 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_372))) (let ((.cse1 (select (select .cse0 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (select (select .cse0 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse1 2147483648)) (< .cse1 0) (< 0 .cse1))))) (forall ((v_ArrVal_372 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_372))) (let ((.cse3 (select (select .cse2 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (select (select .cse2 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse3 2147483648)) (< 9223372039002259455 .cse3) (<= .cse3 0)))))) is different from false [2023-08-30 14:45:46,736 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_371 (Array Int Int)) (v_ArrVal_372 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_372))) (let ((.cse0 (select (select .cse1 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse0 0) (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ 2147483648 .cse0)) (< 0 .cse0))))) (forall ((v_ArrVal_371 (Array Int Int)) (v_ArrVal_372 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_372))) (let ((.cse2 (select (select .cse3 ~o_2~0.base) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (<= .cse2 0) (< (select (select .cse3 c_~o_0~0.base) c_~o_0~0.offset) (+ 2147483648 .cse2)) (< 9223372039002259455 .cse2)))))) is different from false [2023-08-30 14:45:56,340 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:45:56,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 469 treesize of output 255 [2023-08-30 14:45:56,418 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:45:56,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 7303 treesize of output 7123 [2023-08-30 14:45:56,680 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:45:56,681 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 1251 treesize of output 1231 [2023-08-30 14:45:56,727 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:45:56,728 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 1161 treesize of output 1090 [2023-08-30 14:45:56,772 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:45:56,773 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 1081 treesize of output 1050 [2023-08-30 14:45:56,812 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:45:56,813 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 1041 treesize of output 1010 [2023-08-30 14:45:56,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 14:45:56,856 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 1001 treesize of output 990 [2023-08-30 14:49:07,702 WARN L222 SmtUtils]: Spent 10.89s on a formula simplification. DAG size of input: 532 DAG size of output: 639 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-08-30 14:49:13,499 WARN L222 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 441 DAG size of output: 443 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15