./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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-subst.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 b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:21:41,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:21:41,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:21:41,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:21:41,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:21:41,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:21:41,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:21:41,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:21:41,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:21:41,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:21:41,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:21:41,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:21:41,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:21:41,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:21:41,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:21:41,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:21:41,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:21:41,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:21:41,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:21:41,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:21:41,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:21:41,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:21:41,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:21:41,684 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:21:41,687 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:21:41,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:21:41,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:21:41,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:21:41,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:21:41,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:21:41,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:21:41,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:21:41,697 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:21:41,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:21:41,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:21:41,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:21:41,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:21:41,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:21:41,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:21:41,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:21:41,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:21:41,709 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:21:41,729 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:21:41,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:21:41,732 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:21:41,732 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:21:41,733 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:21:41,733 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:21:41,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:21:41,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:21:41,734 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:21:41,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:21:41,735 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:21:41,735 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:21:41,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:21:41,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:21:41,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:21:41,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:21:41,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:21:41,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:21:41,736 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:21:41,736 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:21:41,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:21:41,737 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:21:41,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:21:41,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:21:41,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:21:41,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:21:41,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:21:41,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:21:41,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:21:41,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:21:41,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:21:41,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:21:41,739 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:21:41,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:21:41,739 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:21:41,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:21:41,739 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:21:41,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:21:42,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:21:42,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:21:42,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:21:42,073 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:21:42,073 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:21:42,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-09-01 07:21:43,211 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:21:43,408 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:21:43,408 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2023-09-01 07:21:43,435 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f388b9f3/ef0a84c06ee24399899898dca0846982/FLAGb34c1b204 [2023-09-01 07:21:43,451 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f388b9f3/ef0a84c06ee24399899898dca0846982 [2023-09-01 07:21:43,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:21:43,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:21:43,459 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:21:43,459 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:21:43,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:21:43,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:21:43" (1/1) ... [2023-09-01 07:21:43,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141597f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43, skipping insertion in model container [2023-09-01 07:21:43,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:21:43" (1/1) ... [2023-09-01 07:21:43,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:21:43,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:21:43,627 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-subst.wvr.c[3097,3110] [2023-09-01 07:21:43,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:21:43,639 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:21:43,655 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-subst.wvr.c[3097,3110] [2023-09-01 07:21:43,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:21:43,668 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:21:43,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43 WrapperNode [2023-09-01 07:21:43,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:21:43,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:21:43,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:21:43,678 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:21:43,682 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43" (1/1) ... [2023-09-01 07:21:43,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43" (1/1) ... [2023-09-01 07:21:43,716 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 335 [2023-09-01 07:21:43,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:21:43,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:21:43,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:21:43,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:21:43,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43" (1/1) ... [2023-09-01 07:21:43,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43" (1/1) ... [2023-09-01 07:21:43,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43" (1/1) ... [2023-09-01 07:21:43,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43" (1/1) ... [2023-09-01 07:21:43,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43" (1/1) ... [2023-09-01 07:21:43,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43" (1/1) ... [2023-09-01 07:21:43,766 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43" (1/1) ... [2023-09-01 07:21:43,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43" (1/1) ... [2023-09-01 07:21:43,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:21:43,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:21:43,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:21:43,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:21:43,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43" (1/1) ... [2023-09-01 07:21:43,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:21:43,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:21:43,803 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) [2023-09-01 07:21:43,805 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 [2023-09-01 07:21:43,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:21:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:21:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:21:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:21:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:21:43,830 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:21:43,830 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:21:43,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:21:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:21:43,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:21:43,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:21:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:21:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:21:43,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:21:43,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:21:43,833 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:21:43,960 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:21:43,962 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:21:44,357 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:21:44,369 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:21:44,372 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 07:21:44,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:21:44 BoogieIcfgContainer [2023-09-01 07:21:44,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:21:44,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:21:44,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:21:44,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:21:44,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:21:43" (1/3) ... [2023-09-01 07:21:44,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44027b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:21:44, skipping insertion in model container [2023-09-01 07:21:44,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:21:43" (2/3) ... [2023-09-01 07:21:44,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44027b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:21:44, skipping insertion in model container [2023-09-01 07:21:44,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:21:44" (3/3) ... [2023-09-01 07:21:44,385 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2023-09-01 07:21:44,391 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:21:44,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:21:44,399 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-09-01 07:21:44,399 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:21:44,534 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 07:21:44,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 412 transitions, 848 flow [2023-09-01 07:21:44,750 INFO L130 PetriNetUnfolder]: 35/409 cut-off events. [2023-09-01 07:21:44,751 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:21:44,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 409 events. 35/409 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 876 event pairs, 0 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 308. Up to 2 conditions per place. [2023-09-01 07:21:44,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 387 places, 412 transitions, 848 flow [2023-09-01 07:21:44,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 385 transitions, 785 flow [2023-09-01 07:21:44,776 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:21:44,803 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 362 places, 385 transitions, 785 flow [2023-09-01 07:21:44,806 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 362 places, 385 transitions, 785 flow [2023-09-01 07:21:44,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 385 transitions, 785 flow [2023-09-01 07:21:44,872 INFO L130 PetriNetUnfolder]: 33/385 cut-off events. [2023-09-01 07:21:44,873 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 07:21:44,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 385 events. 33/385 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 848 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 308. Up to 2 conditions per place. [2023-09-01 07:21:44,888 INFO L119 LiptonReduction]: Number of co-enabled transitions 35358 [2023-09-01 07:22:02,091 INFO L134 LiptonReduction]: Checked pairs total: 37939 [2023-09-01 07:22:02,092 INFO L136 LiptonReduction]: Total number of compositions: 496 [2023-09-01 07:22:02,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:22:02,105 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;@6701c5d9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:22:02,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2023-09-01 07:22:02,107 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:22:02,108 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:22:02,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:02,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:22:02,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-09-01 07:22:02,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:02,111 INFO L85 PathProgramCache]: Analyzing trace with hash 54461, now seen corresponding path program 1 times [2023-09-01 07:22:02,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:02,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287864782] [2023-09-01 07:22:02,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:02,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:02,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:02,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287864782] [2023-09-01 07:22:02,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287864782] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:22:02,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:22:02,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:22:02,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313053713] [2023-09-01 07:22:02,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:22:02,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:22:02,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:02,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:22:02,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:22:02,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 908 [2023-09-01 07:22:02,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:02,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:02,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 908 [2023-09-01 07:22:02,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:03,251 INFO L130 PetriNetUnfolder]: 4760/6763 cut-off events. [2023-09-01 07:22:03,252 INFO L131 PetriNetUnfolder]: For 345/345 co-relation queries the response was YES. [2023-09-01 07:22:03,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13841 conditions, 6763 events. 4760/6763 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 34301 event pairs, 4157 based on Foata normal form. 0/2779 useless extension candidates. Maximal degree in co-relation 12700. Up to 6763 conditions per place. [2023-09-01 07:22:03,287 INFO L137 encePairwiseOnDemand]: 897/908 looper letters, 47 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-09-01 07:22:03,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 207 flow [2023-09-01 07:22:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:22:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:22:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1177 transitions. [2023-09-01 07:22:03,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43208516886930987 [2023-09-01 07:22:03,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1177 transitions. [2023-09-01 07:22:03,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1177 transitions. [2023-09-01 07:22:03,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:03,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1177 transitions. [2023-09-01 07:22:03,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 392.3333333333333) internal successors, (1177), 3 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:03,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:03,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:03,331 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 131 flow. Second operand 3 states and 1177 transitions. [2023-09-01 07:22:03,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 207 flow [2023-09-01 07:22:03,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 198 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:22:03,339 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 104 flow [2023-09-01 07:22:03,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2023-09-01 07:22:03,345 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -13 predicate places. [2023-09-01 07:22:03,345 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 104 flow [2023-09-01 07:22:03,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:03,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:03,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:22:03,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:22:03,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-09-01 07:22:03,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:03,357 INFO L85 PathProgramCache]: Analyzing trace with hash 54462, now seen corresponding path program 1 times [2023-09-01 07:22:03,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:03,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872221466] [2023-09-01 07:22:03,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:03,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:03,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:03,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872221466] [2023-09-01 07:22:03,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872221466] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:22:03,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:22:03,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:22:03,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743306425] [2023-09-01 07:22:03,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:22:03,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:22:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:03,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:22:03,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:22:03,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 908 [2023-09-01 07:22:03,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:03,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:03,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 908 [2023-09-01 07:22:03,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:04,990 INFO L130 PetriNetUnfolder]: 9519/13522 cut-off events. [2023-09-01 07:22:04,990 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-09-01 07:22:05,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27470 conditions, 13522 events. 9519/13522 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 75596 event pairs, 8314 based on Foata normal form. 0/5557 useless extension candidates. Maximal degree in co-relation 27464. Up to 6764 conditions per place. [2023-09-01 07:22:05,062 INFO L137 encePairwiseOnDemand]: 899/908 looper letters, 86 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2023-09-01 07:22:05,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 92 transitions, 382 flow [2023-09-01 07:22:05,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:22:05,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:22:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1214 transitions. [2023-09-01 07:22:05,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4456681350954479 [2023-09-01 07:22:05,065 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1214 transitions. [2023-09-01 07:22:05,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1214 transitions. [2023-09-01 07:22:05,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:05,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1214 transitions. [2023-09-01 07:22:05,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:05,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:05,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:05,073 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 104 flow. Second operand 3 states and 1214 transitions. [2023-09-01 07:22:05,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 92 transitions, 382 flow [2023-09-01 07:22:05,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 92 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:22:05,075 INFO L231 Difference]: Finished difference. Result has 52 places, 53 transitions, 153 flow [2023-09-01 07:22:05,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=52, PETRI_TRANSITIONS=53} [2023-09-01 07:22:05,076 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2023-09-01 07:22:05,076 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 53 transitions, 153 flow [2023-09-01 07:22:05,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:05,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:05,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:22:05,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:22:05,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-09-01 07:22:05,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:05,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1689929, now seen corresponding path program 1 times [2023-09-01 07:22:05,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:05,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094847660] [2023-09-01 07:22:05,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:05,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:05,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094847660] [2023-09-01 07:22:05,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094847660] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:05,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5140843] [2023-09-01 07:22:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:05,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:05,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:05,150 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) [2023-09-01 07:22:05,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:22:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:05,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:22:05,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:05,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:22:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:05,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5140843] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:22:05,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:22:05,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-09-01 07:22:05,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069721296] [2023-09-01 07:22:05,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:22:05,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 07:22:05,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 07:22:05,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:22:05,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 908 [2023-09-01 07:22:05,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 53 transitions, 153 flow. Second operand has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:05,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:05,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 908 [2023-09-01 07:22:05,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:09,042 INFO L130 PetriNetUnfolder]: 23796/33799 cut-off events. [2023-09-01 07:22:09,042 INFO L131 PetriNetUnfolder]: For 380/380 co-relation queries the response was YES. [2023-09-01 07:22:09,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68699 conditions, 33799 events. 23796/33799 cut-off events. For 380/380 co-relation queries the response was YES. Maximal size of possible extension queue 1612. Compared 208475 event pairs, 20785 based on Foata normal form. 0/13906 useless extension candidates. Maximal degree in co-relation 68690. Up to 6765 conditions per place. [2023-09-01 07:22:09,214 INFO L137 encePairwiseOnDemand]: 899/908 looper letters, 203 selfloop transitions, 21 changer transitions 0/224 dead transitions. [2023-09-01 07:22:09,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 224 transitions, 1009 flow [2023-09-01 07:22:09,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:22:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:22:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2471 transitions. [2023-09-01 07:22:09,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45356093979441997 [2023-09-01 07:22:09,221 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2471 transitions. [2023-09-01 07:22:09,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2471 transitions. [2023-09-01 07:22:09,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:09,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2471 transitions. [2023-09-01 07:22:09,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 411.8333333333333) internal successors, (2471), 6 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:09,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 908.0) internal successors, (6356), 7 states have internal predecessors, (6356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:09,235 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 908.0) internal successors, (6356), 7 states have internal predecessors, (6356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:09,235 INFO L175 Difference]: Start difference. First operand has 52 places, 53 transitions, 153 flow. Second operand 6 states and 2471 transitions. [2023-09-01 07:22:09,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 224 transitions, 1009 flow [2023-09-01 07:22:09,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 224 transitions, 985 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:22:09,241 INFO L231 Difference]: Finished difference. Result has 58 places, 68 transitions, 291 flow [2023-09-01 07:22:09,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=58, PETRI_TRANSITIONS=68} [2023-09-01 07:22:09,243 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2023-09-01 07:22:09,243 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 68 transitions, 291 flow [2023-09-01 07:22:09,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 374.0) internal successors, (2244), 6 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:09,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:09,244 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:22:09,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 07:22:09,449 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 [2023-09-01 07:22:09,450 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-09-01 07:22:09,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:09,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1193336962, now seen corresponding path program 2 times [2023-09-01 07:22:09,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:09,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100234884] [2023-09-01 07:22:09,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:09,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:09,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:09,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100234884] [2023-09-01 07:22:09,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100234884] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:09,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010868113] [2023-09-01 07:22:09,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:22:09,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:09,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:09,617 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) [2023-09-01 07:22:09,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:22:09,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:22:09,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:22:09,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:22:09,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:22:09,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:22:09,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010868113] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:22:09,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:22:09,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:22:09,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778758514] [2023-09-01 07:22:09,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:22:09,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:22:09,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:09,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:22:09,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:22:09,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 376 out of 908 [2023-09-01 07:22:09,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 68 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 377.0) internal successors, (1131), 3 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:09,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:09,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 376 of 908 [2023-09-01 07:22:09,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:13,110 INFO L130 PetriNetUnfolder]: 23796/33796 cut-off events. [2023-09-01 07:22:13,110 INFO L131 PetriNetUnfolder]: For 385/385 co-relation queries the response was YES. [2023-09-01 07:22:13,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68720 conditions, 33796 events. 23796/33796 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 1932. Compared 213062 event pairs, 20785 based on Foata normal form. 3/13905 useless extension candidates. Maximal degree in co-relation 68708. Up to 33796 conditions per place. [2023-09-01 07:22:13,275 INFO L137 encePairwiseOnDemand]: 904/908 looper letters, 64 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2023-09-01 07:22:13,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 391 flow [2023-09-01 07:22:13,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:22:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:22:13,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1176 transitions. [2023-09-01 07:22:13,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43171806167400884 [2023-09-01 07:22:13,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1176 transitions. [2023-09-01 07:22:13,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1176 transitions. [2023-09-01 07:22:13,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:13,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1176 transitions. [2023-09-01 07:22:13,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 392.0) internal successors, (1176), 3 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:13,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:13,289 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:13,289 INFO L175 Difference]: Start difference. First operand has 58 places, 68 transitions, 291 flow. Second operand 3 states and 1176 transitions. [2023-09-01 07:22:13,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 391 flow [2023-09-01 07:22:13,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 65 transitions, 319 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-09-01 07:22:13,293 INFO L231 Difference]: Finished difference. Result has 52 places, 65 transitions, 191 flow [2023-09-01 07:22:13,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=52, PETRI_TRANSITIONS=65} [2023-09-01 07:22:13,295 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2023-09-01 07:22:13,295 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 65 transitions, 191 flow [2023-09-01 07:22:13,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 377.0) internal successors, (1131), 3 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:13,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:13,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:13,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 07:22:13,504 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 [2023-09-01 07:22:13,504 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-09-01 07:22:13,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1064991367, now seen corresponding path program 1 times [2023-09-01 07:22:13,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:13,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2165716] [2023-09-01 07:22:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:13,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:22:13,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:13,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2165716] [2023-09-01 07:22:13,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2165716] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:22:13,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:22:13,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:22:13,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663497579] [2023-09-01 07:22:13,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:22:13,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:22:13,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:13,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:22:13,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:22:13,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 908 [2023-09-01 07:22:13,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 65 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:13,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:13,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 908 [2023-09-01 07:22:13,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:16,481 INFO L130 PetriNetUnfolder]: 19037/27040 cut-off events. [2023-09-01 07:22:16,481 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2023-09-01 07:22:16,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54954 conditions, 27040 events. 19037/27040 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 1611. Compared 166365 event pairs, 16628 based on Foata normal form. 1/11121 useless extension candidates. Maximal degree in co-relation 54945. Up to 27032 conditions per place. [2023-09-01 07:22:16,614 INFO L137 encePairwiseOnDemand]: 901/908 looper letters, 51 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2023-09-01 07:22:16,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 309 flow [2023-09-01 07:22:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:22:16,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:22:16,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1161 transitions. [2023-09-01 07:22:16,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262114537444934 [2023-09-01 07:22:16,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1161 transitions. [2023-09-01 07:22:16,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1161 transitions. [2023-09-01 07:22:16,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:16,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1161 transitions. [2023-09-01 07:22:16,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:16,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:16,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:16,635 INFO L175 Difference]: Start difference. First operand has 52 places, 65 transitions, 191 flow. Second operand 3 states and 1161 transitions. [2023-09-01 07:22:16,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 309 flow [2023-09-01 07:22:16,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:22:16,636 INFO L231 Difference]: Finished difference. Result has 54 places, 63 transitions, 220 flow [2023-09-01 07:22:16,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=54, PETRI_TRANSITIONS=63} [2023-09-01 07:22:16,637 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2023-09-01 07:22:16,637 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 63 transitions, 220 flow [2023-09-01 07:22:16,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:16,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:16,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:16,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:22:16,638 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-09-01 07:22:16,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:16,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1572430903, now seen corresponding path program 1 times [2023-09-01 07:22:16,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:16,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016940668] [2023-09-01 07:22:16,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:16,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:22:16,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:16,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016940668] [2023-09-01 07:22:16,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016940668] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:16,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039851568] [2023-09-01 07:22:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:16,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:16,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:16,713 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) [2023-09-01 07:22:16,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:22:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:16,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:22:16,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:22:16,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:22:16,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 07:22:16,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039851568] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:22:16,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:22:16,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-09-01 07:22:16,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420370911] [2023-09-01 07:22:16,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:22:16,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 07:22:16,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:16,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 07:22:16,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:22:16,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 908 [2023-09-01 07:22:16,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 63 transitions, 220 flow. Second operand has 8 states, 8 states have (on average 366.375) internal successors, (2931), 8 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:16,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:16,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 908 [2023-09-01 07:22:16,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:17,683 INFO L130 PetriNetUnfolder]: 4760/6772 cut-off events. [2023-09-01 07:22:17,683 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-09-01 07:22:17,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13790 conditions, 6772 events. 4760/6772 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 34287 event pairs, 4157 based on Foata normal form. 9/2803 useless extension candidates. Maximal degree in co-relation 13779. Up to 6761 conditions per place. [2023-09-01 07:22:17,703 INFO L137 encePairwiseOnDemand]: 901/908 looper letters, 42 selfloop transitions, 15 changer transitions 0/57 dead transitions. [2023-09-01 07:22:17,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 292 flow [2023-09-01 07:22:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:22:17,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:22:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2250 transitions. [2023-09-01 07:22:17,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129955947136564 [2023-09-01 07:22:17,708 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2250 transitions. [2023-09-01 07:22:17,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2250 transitions. [2023-09-01 07:22:17,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:17,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2250 transitions. [2023-09-01 07:22:17,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:17,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 908.0) internal successors, (6356), 7 states have internal predecessors, (6356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:17,718 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 908.0) internal successors, (6356), 7 states have internal predecessors, (6356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:17,718 INFO L175 Difference]: Start difference. First operand has 54 places, 63 transitions, 220 flow. Second operand 6 states and 2250 transitions. [2023-09-01 07:22:17,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 292 flow [2023-09-01 07:22:17,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:22:17,720 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 220 flow [2023-09-01 07:22:17,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-09-01 07:22:17,722 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -2 predicate places. [2023-09-01 07:22:17,722 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 220 flow [2023-09-01 07:22:17,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 366.375) internal successors, (2931), 8 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:17,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:17,723 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:17,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 07:22:17,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:17,928 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-09-01 07:22:17,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:17,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1390982649, now seen corresponding path program 2 times [2023-09-01 07:22:17,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:17,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130951102] [2023-09-01 07:22:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:17,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:17,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:18,075 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-09-01 07:22:18,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:18,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130951102] [2023-09-01 07:22:18,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130951102] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:18,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777885378] [2023-09-01 07:22:18,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:22:18,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:18,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:18,077 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) [2023-09-01 07:22:18,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:22:18,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:22:18,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:22:18,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:22:18,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-09-01 07:22:18,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:22:18,336 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-09-01 07:22:18,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777885378] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:22:18,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:22:18,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-09-01 07:22:18,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852975043] [2023-09-01 07:22:18,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:22:18,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 07:22:18,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 07:22:18,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-09-01 07:22:18,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 908 [2023-09-01 07:22:18,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 220 flow. Second operand has 17 states, 17 states have (on average 365.6470588235294) internal successors, (6216), 17 states have internal predecessors, (6216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:18,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:18,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 908 [2023-09-01 07:22:18,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:19,347 INFO L130 PetriNetUnfolder]: 4760/6775 cut-off events. [2023-09-01 07:22:19,348 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2023-09-01 07:22:19,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13823 conditions, 6775 events. 4760/6775 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 34287 event pairs, 4157 based on Foata normal form. 3/2800 useless extension candidates. Maximal degree in co-relation 13809. Up to 6761 conditions per place. [2023-09-01 07:22:19,380 INFO L137 encePairwiseOnDemand]: 901/908 looper letters, 42 selfloop transitions, 18 changer transitions 0/60 dead transitions. [2023-09-01 07:22:19,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 352 flow [2023-09-01 07:22:19,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:22:19,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:22:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2611 transitions. [2023-09-01 07:22:19,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107929515418502 [2023-09-01 07:22:19,388 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2611 transitions. [2023-09-01 07:22:19,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2611 transitions. [2023-09-01 07:22:19,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:19,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2611 transitions. [2023-09-01 07:22:19,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 373.0) internal successors, (2611), 7 states have internal predecessors, (2611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:19,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 908.0) internal successors, (7264), 8 states have internal predecessors, (7264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:19,400 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 908.0) internal successors, (7264), 8 states have internal predecessors, (7264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:19,400 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 220 flow. Second operand 7 states and 2611 transitions. [2023-09-01 07:22:19,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 352 flow [2023-09-01 07:22:19,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 322 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 07:22:19,403 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 252 flow [2023-09-01 07:22:19,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2023-09-01 07:22:19,404 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2023-09-01 07:22:19,404 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 252 flow [2023-09-01 07:22:19,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 365.6470588235294) internal successors, (6216), 17 states have internal predecessors, (6216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:19,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:19,405 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:19,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 07:22:19,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:19,613 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-09-01 07:22:19,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:19,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628230, now seen corresponding path program 1 times [2023-09-01 07:22:19,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:19,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240208029] [2023-09-01 07:22:19,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:19,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-09-01 07:22:19,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:19,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240208029] [2023-09-01 07:22:19,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240208029] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:22:19,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:22:19,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:22:19,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57821151] [2023-09-01 07:22:19,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:22:19,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:22:19,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:22:19,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:22:19,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 908 [2023-09-01 07:22:19,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:19,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:19,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 908 [2023-09-01 07:22:19,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:22:21,217 INFO L130 PetriNetUnfolder]: 8190/11655 cut-off events. [2023-09-01 07:22:21,217 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-09-01 07:22:21,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23741 conditions, 11655 events. 8190/11655 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 67114 event pairs, 4157 based on Foata normal form. 0/4801 useless extension candidates. Maximal degree in co-relation 23726. Up to 6776 conditions per place. [2023-09-01 07:22:21,283 INFO L137 encePairwiseOnDemand]: 904/908 looper letters, 92 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2023-09-01 07:22:21,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 94 transitions, 513 flow [2023-09-01 07:22:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:22:21,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:22:21,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1221 transitions. [2023-09-01 07:22:21,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44823788546255505 [2023-09-01 07:22:21,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1221 transitions. [2023-09-01 07:22:21,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1221 transitions. [2023-09-01 07:22:21,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:22:21,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1221 transitions. [2023-09-01 07:22:21,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 407.0) internal successors, (1221), 3 states have internal predecessors, (1221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:21,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:21,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 908.0) internal successors, (3632), 4 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:21,294 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 252 flow. Second operand 3 states and 1221 transitions. [2023-09-01 07:22:21,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 94 transitions, 513 flow [2023-09-01 07:22:21,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 94 transitions, 483 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-09-01 07:22:21,300 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 236 flow [2023-09-01 07:22:21,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-09-01 07:22:21,303 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2023-09-01 07:22:21,303 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 236 flow [2023-09-01 07:22:21,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 383.6666666666667) internal successors, (1151), 3 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:21,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:22:21,304 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:22:21,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 07:22:21,304 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-09-01 07:22:21,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:22:21,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628297, now seen corresponding path program 3 times [2023-09-01 07:22:21,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:22:21,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568191435] [2023-09-01 07:22:21,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:22:21,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:22:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:22:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-09-01 07:22:22,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:22:22,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568191435] [2023-09-01 07:22:22,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568191435] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:22:22,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736821858] [2023-09-01 07:22:22,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 07:22:22,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:22:22,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:22:22,114 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) [2023-09-01 07:22:22,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:22:22,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-09-01 07:22:22,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:22:22,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 48 conjunts are in the unsatisfiable core [2023-09-01 07:22:22,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:22:22,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 07:22:22,368 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 [2023-09-01 07:22:22,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:22:22,401 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 [2023-09-01 07:22:22,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:22:22,437 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 [2023-09-01 07:22:22,473 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-09-01 07:22:22,473 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 [2023-09-01 07:22:22,530 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-09-01 07:22:22,530 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 [2023-09-01 07:22:22,576 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:22:22,576 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 [2023-09-01 07:22:22,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 07:22:22,608 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 [2023-09-01 07:22:22,620 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 [2023-09-01 07:22:22,633 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 [2023-09-01 07:22:22,643 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 [2023-09-01 07:22:22,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:22:22,665 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 [2023-09-01 07:22:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-09-01 07:22:22,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:22:22,738 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_443 (Array Int Int)) (v_ArrVal_442 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_442) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_443) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2023-09-01 07:22:41,165 INFO L321 Elim1Store]: treesize reduction 212, result has 30.5 percent of original size [2023-09-01 07:22:41,165 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 53 treesize of output 106 [2023-09-01 07:22:41,232 INFO L321 Elim1Store]: treesize reduction 24, result has 70.4 percent of original size [2023-09-01 07:22:41,233 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 132 treesize of output 152 [2023-09-01 07:22:41,249 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 48 treesize of output 44 [2023-09-01 07:22:41,266 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 22 treesize of output 20 [2023-09-01 07:22:41,507 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 10 treesize of output 8 [2023-09-01 07:22:41,531 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 25 trivial. 5 not checked. [2023-09-01 07:22:41,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736821858] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:22:41,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:22:41,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-09-01 07:22:41,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865421062] [2023-09-01 07:22:41,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:22:41,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-09-01 07:22:41,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:22:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-09-01 07:22:41,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=773, Unknown=15, NotChecked=58, Total=992 [2023-09-01 07:22:41,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 908 [2023-09-01 07:22:41,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 236 flow. Second operand has 32 states, 32 states have (on average 311.3125) internal successors, (9962), 32 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:22:41,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:22:41,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 908 [2023-09-01 07:22:41,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:23:10,231 WARN L222 SmtUtils]: Spent 28.30s on a formula simplification. DAG size of input: 42 DAG size of output: 40 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 07:23:30,726 WARN L222 SmtUtils]: Spent 14.27s on a formula simplification. DAG size of input: 49 DAG size of output: 44 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 07:23:33,024 INFO L130 PetriNetUnfolder]: 10269/15181 cut-off events. [2023-09-01 07:23:33,024 INFO L131 PetriNetUnfolder]: For 1062/1062 co-relation queries the response was YES. [2023-09-01 07:23:33,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32040 conditions, 15181 events. 10269/15181 cut-off events. For 1062/1062 co-relation queries the response was YES. Maximal size of possible extension queue 1087. Compared 97373 event pairs, 5647 based on Foata normal form. 0/6724 useless extension candidates. Maximal degree in co-relation 32024. Up to 10246 conditions per place. [2023-09-01 07:23:33,109 INFO L137 encePairwiseOnDemand]: 891/908 looper letters, 72 selfloop transitions, 29 changer transitions 0/101 dead transitions. [2023-09-01 07:23:33,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 101 transitions, 533 flow [2023-09-01 07:23:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 07:23:33,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 07:23:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4745 transitions. [2023-09-01 07:23:33,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838472834067546 [2023-09-01 07:23:33,117 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4745 transitions. [2023-09-01 07:23:33,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4745 transitions. [2023-09-01 07:23:33,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:23:33,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4745 transitions. [2023-09-01 07:23:33,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 316.3333333333333) internal successors, (4745), 15 states have internal predecessors, (4745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:33,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 908.0) internal successors, (14528), 16 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:33,138 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 908.0) internal successors, (14528), 16 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:33,139 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 236 flow. Second operand 15 states and 4745 transitions. [2023-09-01 07:23:33,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 101 transitions, 533 flow [2023-09-01 07:23:33,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 101 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:23:33,142 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 358 flow [2023-09-01 07:23:33,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=358, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-09-01 07:23:33,143 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 15 predicate places. [2023-09-01 07:23:33,143 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 358 flow [2023-09-01 07:23:33,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 311.3125) internal successors, (9962), 32 states have internal predecessors, (9962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:33,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:23:33,145 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:23:33,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 07:23:33,352 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 [2023-09-01 07:23:33,352 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-09-01 07:23:33,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:23:33,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628226, now seen corresponding path program 1 times [2023-09-01 07:23:33,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:23:33,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67678263] [2023-09-01 07:23:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:23:33,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:23:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:23:34,935 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 07:23:34,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:23:34,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67678263] [2023-09-01 07:23:34,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67678263] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:23:34,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966754072] [2023-09-01 07:23:34,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:23:34,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:23:34,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:23:34,937 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) [2023-09-01 07:23:34,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 07:23:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:23:35,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 52 conjunts are in the unsatisfiable core [2023-09-01 07:23:35,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:23:35,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:23:35,165 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-09-01 07:23:35,166 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 3 case distinctions, treesize of input 15 treesize of output 39 [2023-09-01 07:23:35,204 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 [2023-09-01 07:23:35,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:23:35,251 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 23 treesize of output 22 [2023-09-01 07:23:35,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:23:35,299 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 23 treesize of output 22 [2023-09-01 07:23:35,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:23:35,348 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 23 treesize of output 22 [2023-09-01 07:23:35,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:23:35,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-09-01 07:23:35,446 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 07:23:35,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 07:23:35,489 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 16 treesize of output 18 [2023-09-01 07:23:35,509 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 16 treesize of output 18 [2023-09-01 07:23:35,523 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 16 treesize of output 18 [2023-09-01 07:23:35,541 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 16 treesize of output 18 [2023-09-01 07:23:35,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:23:35,604 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:23:35,604 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 [2023-09-01 07:23:35,644 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 16 treesize of output 18 [2023-09-01 07:23:35,655 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 16 treesize of output 18 [2023-09-01 07:23:35,668 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 16 treesize of output 18 [2023-09-01 07:23:35,685 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 16 treesize of output 18 [2023-09-01 07:23:35,695 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 16 treesize of output 18 [2023-09-01 07:23:35,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:23:35,733 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 16 treesize of output 18 [2023-09-01 07:23:35,793 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 07:23:35,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:23:35,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 12 [2023-09-01 07:23:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-09-01 07:23:35,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:23:35,905 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_569 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_569) c_~o_0~0.base) c_~o_0~0.offset)))) is different from false [2023-09-01 07:23:52,170 INFO L321 Elim1Store]: treesize reduction 244, result has 20.0 percent of original size [2023-09-01 07:23:52,170 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 58 treesize of output 79 [2023-09-01 07:23:52,186 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:23:52,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1107 treesize of output 1075 [2023-09-01 07:23:52,212 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 61 treesize of output 59 [2023-09-01 07:23:52,218 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 59 treesize of output 55 [2023-09-01 07:23:52,225 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 62 treesize of output 54 [2023-09-01 07:23:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 16 refuted. 2 times theorem prover too weak. 20 trivial. 5 not checked. [2023-09-01 07:23:52,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966754072] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:23:52,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:23:52,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 38 [2023-09-01 07:23:52,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218505962] [2023-09-01 07:23:52,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:23:52,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-09-01 07:23:52,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:23:52,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-09-01 07:23:52,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1286, Unknown=15, NotChecked=74, Total=1560 [2023-09-01 07:23:52,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 908 [2023-09-01 07:23:52,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 358 flow. Second operand has 40 states, 40 states have (on average 310.25) internal successors, (12410), 40 states have internal predecessors, (12410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:52,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:23:52,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 908 [2023-09-01 07:23:52,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:23:55,991 INFO L130 PetriNetUnfolder]: 12522/18486 cut-off events. [2023-09-01 07:23:55,991 INFO L131 PetriNetUnfolder]: For 5381/5381 co-relation queries the response was YES. [2023-09-01 07:23:56,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42106 conditions, 18486 events. 12522/18486 cut-off events. For 5381/5381 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 118947 event pairs, 9557 based on Foata normal form. 0/8939 useless extension candidates. Maximal degree in co-relation 42086. Up to 13151 conditions per place. [2023-09-01 07:23:56,095 INFO L137 encePairwiseOnDemand]: 896/908 looper letters, 110 selfloop transitions, 21 changer transitions 0/131 dead transitions. [2023-09-01 07:23:56,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 131 transitions, 769 flow [2023-09-01 07:23:56,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 07:23:56,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 07:23:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4755 transitions. [2023-09-01 07:23:56,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3491189427312775 [2023-09-01 07:23:56,104 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4755 transitions. [2023-09-01 07:23:56,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4755 transitions. [2023-09-01 07:23:56,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:23:56,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4755 transitions. [2023-09-01 07:23:56,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 317.0) internal successors, (4755), 15 states have internal predecessors, (4755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:56,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 908.0) internal successors, (14528), 16 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:56,125 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 908.0) internal successors, (14528), 16 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:56,125 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 358 flow. Second operand 15 states and 4755 transitions. [2023-09-01 07:23:56,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 131 transitions, 769 flow [2023-09-01 07:23:56,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 720 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-09-01 07:23:56,132 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 388 flow [2023-09-01 07:23:56,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=388, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2023-09-01 07:23:56,132 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 25 predicate places. [2023-09-01 07:23:56,133 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 388 flow [2023-09-01 07:23:56,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 310.25) internal successors, (12410), 40 states have internal predecessors, (12410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:23:56,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:23:56,135 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:23:56,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 07:23:56,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:23:56,341 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-09-01 07:23:56,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:23:56,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628228, now seen corresponding path program 1 times [2023-09-01 07:23:56,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:23:56,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259671462] [2023-09-01 07:23:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:23:56,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:23:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:23:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-09-01 07:23:56,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:23:56,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259671462] [2023-09-01 07:23:56,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259671462] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:23:56,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560902519] [2023-09-01 07:23:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:23:56,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:23:56,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:23:56,971 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:23:56,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 07:23:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:23:57,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 43 conjunts are in the unsatisfiable core [2023-09-01 07:23:57,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:23:57,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 07:23:57,162 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 [2023-09-01 07:23:57,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:23:57,196 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 23 treesize of output 22 [2023-09-01 07:23:57,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:23:57,231 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 23 treesize of output 22 [2023-09-01 07:23:57,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:23:57,265 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 23 treesize of output 22 [2023-09-01 07:23:57,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:23:57,304 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 23 treesize of output 22 [2023-09-01 07:23:57,332 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:23:57,332 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 [2023-09-01 07:23:57,357 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 16 treesize of output 18 [2023-09-01 07:23:57,368 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 16 treesize of output 18 [2023-09-01 07:23:57,378 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 16 treesize of output 18 [2023-09-01 07:23:57,389 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 16 treesize of output 18 [2023-09-01 07:23:57,400 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 16 treesize of output 18 [2023-09-01 07:23:57,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:23:57,424 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 16 treesize of output 18 [2023-09-01 07:23:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-09-01 07:23:57,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:23:57,495 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_685 (Array Int Int)) (v_ArrVal_686 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_685) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_686) c_~o_2~0.base) c_~o_2~0.offset) 4294967296))) is different from false [2023-09-01 07:24:14,104 INFO L321 Elim1Store]: treesize reduction 244, result has 20.0 percent of original size [2023-09-01 07:24:14,105 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 55 treesize of output 76 [2023-09-01 07:24:14,116 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:14,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-09-01 07:24:14,120 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 28 treesize of output 26 [2023-09-01 07:24:14,123 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 54 treesize of output 50 [2023-09-01 07:24:14,192 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 10 treesize of output 8 [2023-09-01 07:24:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 5 not checked. [2023-09-01 07:24:14,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560902519] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:24:14,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:24:14,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-09-01 07:24:14,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904097350] [2023-09-01 07:24:14,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:24:14,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-09-01 07:24:14,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:24:14,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-09-01 07:24:14,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=754, Unknown=12, NotChecked=58, Total=992 [2023-09-01 07:24:14,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 908 [2023-09-01 07:24:14,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 388 flow. Second operand has 32 states, 32 states have (on average 320.3125) internal successors, (10250), 32 states have internal predecessors, (10250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:24:14,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:24:14,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 908 [2023-09-01 07:24:14,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:24:16,921 INFO L130 PetriNetUnfolder]: 13271/19744 cut-off events. [2023-09-01 07:24:16,921 INFO L131 PetriNetUnfolder]: For 12916/12916 co-relation queries the response was YES. [2023-09-01 07:24:16,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46859 conditions, 19744 events. 13271/19744 cut-off events. For 12916/12916 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 133297 event pairs, 7358 based on Foata normal form. 0/10751 useless extension candidates. Maximal degree in co-relation 46839. Up to 13587 conditions per place. [2023-09-01 07:24:17,016 INFO L137 encePairwiseOnDemand]: 892/908 looper letters, 70 selfloop transitions, 37 changer transitions 0/107 dead transitions. [2023-09-01 07:24:17,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 683 flow [2023-09-01 07:24:17,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 07:24:17,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 07:24:17,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 5200 transitions. [2023-09-01 07:24:17,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3579295154185022 [2023-09-01 07:24:17,025 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 5200 transitions. [2023-09-01 07:24:17,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 5200 transitions. [2023-09-01 07:24:17,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:24:17,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 5200 transitions. [2023-09-01 07:24:17,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 325.0) internal successors, (5200), 16 states have internal predecessors, (5200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:24:17,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 908.0) internal successors, (15436), 17 states have internal predecessors, (15436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:24:17,046 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 908.0) internal successors, (15436), 17 states have internal predecessors, (15436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:24:17,046 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 388 flow. Second operand 16 states and 5200 transitions. [2023-09-01 07:24:17,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 683 flow [2023-09-01 07:24:17,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 107 transitions, 673 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-09-01 07:24:17,081 INFO L231 Difference]: Finished difference. Result has 103 places, 82 transitions, 488 flow [2023-09-01 07:24:17,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=908, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=488, PETRI_PLACES=103, PETRI_TRANSITIONS=82} [2023-09-01 07:24:17,082 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 41 predicate places. [2023-09-01 07:24:17,082 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 82 transitions, 488 flow [2023-09-01 07:24:17,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 320.3125) internal successors, (10250), 32 states have internal predecessors, (10250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:24:17,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:24:17,084 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:24:17,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 07:24:17,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:17,291 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2023-09-01 07:24:17,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:24:17,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1756628227, now seen corresponding path program 1 times [2023-09-01 07:24:17,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:24:17,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375097912] [2023-09-01 07:24:17,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:17,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:24:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:18,544 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-09-01 07:24:18,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:24:18,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375097912] [2023-09-01 07:24:18,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375097912] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:24:18,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433804550] [2023-09-01 07:24:18,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:24:18,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:24:18,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:24:18,561 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:24:18,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 07:24:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:24:18,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 73 conjunts are in the unsatisfiable core [2023-09-01 07:24:18,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:24:18,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:18,769 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-09-01 07:24:18,769 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 3 case distinctions, treesize of input 15 treesize of output 39 [2023-09-01 07:24:18,806 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 [2023-09-01 07:24:18,844 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 [2023-09-01 07:24:18,881 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 [2023-09-01 07:24:18,918 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 [2023-09-01 07:24:18,954 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 [2023-09-01 07:24:18,994 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 07:24:18,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 07:24:19,034 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 [2023-09-01 07:24:19,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 07:24:19,133 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 [2023-09-01 07:24:19,169 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 [2023-09-01 07:24:19,207 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 [2023-09-01 07:24:19,244 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 07:24:19,244 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 [2023-09-01 07:24:19,275 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 [2023-09-01 07:24:19,291 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 [2023-09-01 07:24:19,301 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 [2023-09-01 07:24:19,312 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 [2023-09-01 07:24:19,323 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 [2023-09-01 07:24:19,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:24:19,352 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 [2023-09-01 07:24:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:24:19,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:24:19,756 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_812 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_812))) (let ((.cse0 (select (select .cse1 ~o_2~0.base) c_~o_2~0.offset))) (or (< 9223372039002259455 .cse0) (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse0 2147483648)) (<= .cse0 0))))) (forall ((v_ArrVal_812 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_812))) (let ((.cse2 (select (select .cse3 ~o_2~0.base) c_~o_2~0.offset))) (or (< .cse2 0) (< (select (select .cse3 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse2 2147483648)) (< 0 .cse2)))))) is different from false [2023-09-01 07:24:19,775 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_812 (Array Int Int)) (v_ArrVal_811 (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_811) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_812))) (let ((.cse0 (select (select .cse1 ~o_2~0.base) c_~o_2~0.offset))) (or (< 0 .cse0) (< (select (select .cse1 c_~o_0~0.base) c_~o_0~0.offset) (+ .cse0 2147483648)) (< .cse0 0))))) (forall ((v_ArrVal_812 (Array Int Int)) (v_ArrVal_811 (Array Int Int)) (~o_2~0.base Int)) (let ((.cse2 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_811) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_812))) (let ((.cse3 (select (select .cse2 ~o_2~0.base) c_~o_2~0.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 [2023-09-01 07:24:55,201 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:55,201 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 511 treesize of output 297 [2023-09-01 07:24:55,335 INFO L321 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2023-09-01 07:24:55,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 80941 treesize of output 78885 [2023-09-01 07:24:55,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:55,695 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 1519 treesize of output 1492 [2023-09-01 07:24:55,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:55,751 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 1483 treesize of output 1420 [2023-09-01 07:24:55,805 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:55,806 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 1411 treesize of output 1276 [2023-09-01 07:24:55,908 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:55,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11684 treesize of output 11438 [2023-09-01 07:24:56,365 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:56,366 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 2627 treesize of output 2564 [2023-09-01 07:24:56,499 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:56,500 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 2555 treesize of output 2528 [2023-09-01 07:24:56,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:24:56,608 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 2519 treesize of output 2384 Killed by 15