./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.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 e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:19:44,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:19:44,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:19:44,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:19:44,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:19:44,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:19:44,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:19:44,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:19:44,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:19:44,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:19:44,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:19:44,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:19:44,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:19:44,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:19:44,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:19:44,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:19:44,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:19:44,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:19:44,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:19:44,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:19:44,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:19:44,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:19:44,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:19:44,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:19:44,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:19:44,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:19:44,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:19:44,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:19:44,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:19:44,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:19:44,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:19:44,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:19:44,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:19:44,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:19:44,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:19:44,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:19:44,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:19:44,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:19:44,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:19:44,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:19:44,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:19:44,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:19:44,805 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:19:44,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:19:44,806 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:19:44,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:19:44,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:19:44,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:19:44,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:19:44,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:19:44,809 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:19:44,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:19:44,810 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:19:44,810 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:19:44,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:19:44,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:19:44,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:19:44,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:19:44,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:19:44,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:19:44,811 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:19:44,811 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:19:44,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:19:44,812 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:19:44,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:19:44,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:19:44,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:19:44,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:19:44,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:19:44,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:19:44,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:19:44,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:19:44,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:19:44,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:19:44,814 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:19:44,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:19:44,814 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:19:44,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:19:44,815 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:19:44,815 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:19:45,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:19:45,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:19:45,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:19:45,156 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:19:45,156 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:19:45,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-08-30 15:19:46,372 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:19:46,571 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:19:46,571 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-08-30 15:19:46,588 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372f014b8/d624e139f23e4ea193a25344749b4834/FLAG640d7795d [2023-08-30 15:19:46,604 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/372f014b8/d624e139f23e4ea193a25344749b4834 [2023-08-30 15:19:46,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:19:46,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:19:46,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:19:46,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:19:46,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:19:46,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:19:46" (1/1) ... [2023-08-30 15:19:46,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7d50e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46, skipping insertion in model container [2023-08-30 15:19:46,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:19:46" (1/1) ... [2023-08-30 15:19:46,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:19:46,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:19:46,841 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/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2023-08-30 15:19:46,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:19:46,865 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:19:46,905 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/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2023-08-30 15:19:46,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:19:46,934 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:19:46,936 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:19:46,942 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:19:46,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46 WrapperNode [2023-08-30 15:19:46,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:19:46,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:19:46,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:19:46,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:19:46,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46" (1/1) ... [2023-08-30 15:19:46,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46" (1/1) ... [2023-08-30 15:19:47,023 INFO L138 Inliner]: procedures = 28, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 425 [2023-08-30 15:19:47,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:19:47,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:19:47,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:19:47,030 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:19:47,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46" (1/1) ... [2023-08-30 15:19:47,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46" (1/1) ... [2023-08-30 15:19:47,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46" (1/1) ... [2023-08-30 15:19:47,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46" (1/1) ... [2023-08-30 15:19:47,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46" (1/1) ... [2023-08-30 15:19:47,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46" (1/1) ... [2023-08-30 15:19:47,087 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46" (1/1) ... [2023-08-30 15:19:47,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46" (1/1) ... [2023-08-30 15:19:47,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:19:47,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:19:47,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:19:47,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:19:47,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46" (1/1) ... [2023-08-30 15:19:47,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:19:47,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:19:47,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:19:47,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:19:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:19:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 15:19:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:19:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:19:47,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:19:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 15:19:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:19:47,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:19:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:19:47,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:19:47,172 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:19:47,172 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:19:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:19:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:19:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:19:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:19:47,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:19:47,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:19:47,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:19:47,175 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:19:47,332 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:19:47,346 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:19:47,962 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:19:48,414 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:19:48,414 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-30 15:19:48,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:19:48 BoogieIcfgContainer [2023-08-30 15:19:48,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:19:48,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:19:48,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:19:48,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:19:48,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:19:46" (1/3) ... [2023-08-30 15:19:48,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21276d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:19:48, skipping insertion in model container [2023-08-30 15:19:48,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:19:46" (2/3) ... [2023-08-30 15:19:48,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21276d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:19:48, skipping insertion in model container [2023-08-30 15:19:48,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:19:48" (3/3) ... [2023-08-30 15:19:48,424 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2023-08-30 15:19:48,432 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:19:48,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:19:48,440 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-08-30 15:19:48,440 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:19:48,620 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:19:48,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 374 transitions, 772 flow [2023-08-30 15:19:48,765 INFO L130 PetriNetUnfolder]: 35/371 cut-off events. [2023-08-30 15:19:48,766 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:19:48,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 371 events. 35/371 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 862 event pairs, 0 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 298. Up to 2 conditions per place. [2023-08-30 15:19:48,773 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 374 transitions, 772 flow [2023-08-30 15:19:48,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 353 transitions, 721 flow [2023-08-30 15:19:48,784 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:19:48,792 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 329 places, 353 transitions, 721 flow [2023-08-30 15:19:48,795 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 329 places, 353 transitions, 721 flow [2023-08-30 15:19:48,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 329 places, 353 transitions, 721 flow [2023-08-30 15:19:48,868 INFO L130 PetriNetUnfolder]: 34/353 cut-off events. [2023-08-30 15:19:48,868 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:19:48,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 353 events. 34/353 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 827 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 298. Up to 2 conditions per place. [2023-08-30 15:19:48,879 INFO L119 LiptonReduction]: Number of co-enabled transitions 17934 [2023-08-30 15:20:16,981 INFO L134 LiptonReduction]: Checked pairs total: 24408 [2023-08-30 15:20:16,982 INFO L136 LiptonReduction]: Total number of compositions: 422 [2023-08-30 15:20:16,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:20:16,998 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;@3d2c1e11, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:20:16,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-08-30 15:20:17,001 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:20:17,001 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:20:17,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:20:17,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:20:17,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-30 15:20:17,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:20:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash 60193, now seen corresponding path program 1 times [2023-08-30 15:20:17,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:20:17,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460814231] [2023-08-30 15:20:17,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:20:17,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:20:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:20:17,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:20:17,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:20:17,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460814231] [2023-08-30 15:20:17,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460814231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:20:17,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:20:17,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:20:17,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685127641] [2023-08-30 15:20:17,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:20:17,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:20:17,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:20:17,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:20:17,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:20:17,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 796 [2023-08-30 15:20:17,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:17,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:20:17,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 796 [2023-08-30 15:20:17,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:20:22,859 INFO L130 PetriNetUnfolder]: 25006/32342 cut-off events. [2023-08-30 15:20:22,859 INFO L131 PetriNetUnfolder]: For 889/889 co-relation queries the response was YES. [2023-08-30 15:20:22,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65630 conditions, 32342 events. 25006/32342 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 2182. Compared 184879 event pairs, 15630 based on Foata normal form. 0/12117 useless extension candidates. Maximal degree in co-relation 30766. Up to 16172 conditions per place. [2023-08-30 15:20:23,051 INFO L137 encePairwiseOnDemand]: 778/796 looper letters, 109 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2023-08-30 15:20:23,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 118 transitions, 496 flow [2023-08-30 15:20:23,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:20:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:20:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1087 transitions. [2023-08-30 15:20:23,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551926298157454 [2023-08-30 15:20:23,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1087 transitions. [2023-08-30 15:20:23,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1087 transitions. [2023-08-30 15:20:23,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:20:23,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1087 transitions. [2023-08-30 15:20:23,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.3333333333333) internal successors, (1087), 3 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:23,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:23,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:23,098 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 155 flow. Second operand 3 states and 1087 transitions. [2023-08-30 15:20:23,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 118 transitions, 496 flow [2023-08-30 15:20:23,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 118 transitions, 478 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:20:23,150 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 190 flow [2023-08-30 15:20:23,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-08-30 15:20:23,159 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2023-08-30 15:20:23,159 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 190 flow [2023-08-30 15:20:23,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.6666666666667) internal successors, (956), 3 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:23,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:20:23,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:20:23,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:20:23,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-30 15:20:23,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:20:23,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1867710, now seen corresponding path program 1 times [2023-08-30 15:20:23,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:20:23,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757498388] [2023-08-30 15:20:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:20:23,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:20:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:20:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:20:23,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:20:23,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757498388] [2023-08-30 15:20:23,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757498388] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:20:23,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18385746] [2023-08-30 15:20:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:20:23,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:20:23,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:20:23,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:20:23,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:20:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:20:23,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:20:23,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:20:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:20:23,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:20:23,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18385746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:20:23,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:20:23,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 15:20:23,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313744343] [2023-08-30 15:20:23,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:20:23,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:20:23,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:20:23,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:20:23,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:20:23,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 796 [2023-08-30 15:20:23,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 318.75) internal successors, (1275), 4 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:23,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:20:23,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 796 [2023-08-30 15:20:23,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:20:27,944 INFO L130 PetriNetUnfolder]: 25006/32339 cut-off events. [2023-08-30 15:20:27,944 INFO L131 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2023-08-30 15:20:27,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65363 conditions, 32339 events. 25006/32339 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 2238. Compared 183580 event pairs, 15630 based on Foata normal form. 0/12125 useless extension candidates. Maximal degree in co-relation 32712. Up to 16172 conditions per place. [2023-08-30 15:20:28,090 INFO L137 encePairwiseOnDemand]: 787/796 looper letters, 106 selfloop transitions, 6 changer transitions 0/115 dead transitions. [2023-08-30 15:20:28,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 115 transitions, 506 flow [2023-08-30 15:20:28,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:20:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:20:28,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1387 transitions. [2023-08-30 15:20:28,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356155778894472 [2023-08-30 15:20:28,095 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1387 transitions. [2023-08-30 15:20:28,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1387 transitions. [2023-08-30 15:20:28,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:20:28,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1387 transitions. [2023-08-30 15:20:28,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 346.75) internal successors, (1387), 4 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:28,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 796.0) internal successors, (3980), 5 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:28,107 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 796.0) internal successors, (3980), 5 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:28,107 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 190 flow. Second operand 4 states and 1387 transitions. [2023-08-30 15:20:28,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 115 transitions, 506 flow [2023-08-30 15:20:28,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:20:28,112 INFO L231 Difference]: Finished difference. Result has 62 places, 66 transitions, 178 flow [2023-08-30 15:20:28,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=62, PETRI_TRANSITIONS=66} [2023-08-30 15:20:28,113 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -9 predicate places. [2023-08-30 15:20:28,113 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 66 transitions, 178 flow [2023-08-30 15:20:28,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 318.75) internal successors, (1275), 4 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:28,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:20:28,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:20:28,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 15:20:28,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:20:28,321 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-30 15:20:28,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:20:28,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1867709, now seen corresponding path program 1 times [2023-08-30 15:20:28,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:20:28,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572394225] [2023-08-30 15:20:28,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:20:28,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:20:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:20:28,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:20:28,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:20:28,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572394225] [2023-08-30 15:20:28,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572394225] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:20:28,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71037322] [2023-08-30 15:20:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:20:28,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:20:28,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:20:28,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:20:28,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:20:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:20:28,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:20:28,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:20:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:20:28,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:20:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:20:28,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71037322] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:20:28,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:20:28,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:20:28,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38719387] [2023-08-30 15:20:28,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:20:28,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:20:28,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:20:28,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:20:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:20:28,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 796 [2023-08-30 15:20:28,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 66 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 319.14285714285717) internal successors, (2234), 7 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:28,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:20:28,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 796 [2023-08-30 15:20:28,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:20:38,739 INFO L130 PetriNetUnfolder]: 62440/80768 cut-off events. [2023-08-30 15:20:38,739 INFO L131 PetriNetUnfolder]: For 389/389 co-relation queries the response was YES. [2023-08-30 15:20:38,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163229 conditions, 80768 events. 62440/80768 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 4818. Compared 499230 event pairs, 39033 based on Foata normal form. 0/30320 useless extension candidates. Maximal degree in co-relation 130411. Up to 16178 conditions per place. [2023-08-30 15:20:39,130 INFO L137 encePairwiseOnDemand]: 787/796 looper letters, 253 selfloop transitions, 21 changer transitions 0/277 dead transitions. [2023-08-30 15:20:39,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 277 transitions, 1214 flow [2023-08-30 15:20:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:20:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:20:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2191 transitions. [2023-08-30 15:20:39,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45875209380234505 [2023-08-30 15:20:39,137 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2191 transitions. [2023-08-30 15:20:39,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2191 transitions. [2023-08-30 15:20:39,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:20:39,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2191 transitions. [2023-08-30 15:20:39,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 365.1666666666667) internal successors, (2191), 6 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:39,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 796.0) internal successors, (5572), 7 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:39,155 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 796.0) internal successors, (5572), 7 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:39,155 INFO L175 Difference]: Start difference. First operand has 62 places, 66 transitions, 178 flow. Second operand 6 states and 2191 transitions. [2023-08-30 15:20:39,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 277 transitions, 1214 flow [2023-08-30 15:20:39,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 277 transitions, 1201 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:20:39,166 INFO L231 Difference]: Finished difference. Result has 68 places, 81 transitions, 327 flow [2023-08-30 15:20:39,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=68, PETRI_TRANSITIONS=81} [2023-08-30 15:20:39,167 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -3 predicate places. [2023-08-30 15:20:39,167 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 81 transitions, 327 flow [2023-08-30 15:20:39,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 319.14285714285717) internal successors, (2234), 7 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:39,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:20:39,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 15:20:39,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 15:20:39,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 15:20:39,375 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-30 15:20:39,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:20:39,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1796828764, now seen corresponding path program 1 times [2023-08-30 15:20:39,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:20:39,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354403606] [2023-08-30 15:20:39,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:20:39,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:20:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:20:39,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:20:39,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:20:39,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354403606] [2023-08-30 15:20:39,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354403606] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:20:39,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:20:39,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:20:39,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998925841] [2023-08-30 15:20:39,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:20:39,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:20:39,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:20:39,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:20:39,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:20:39,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 796 [2023-08-30 15:20:39,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 81 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:39,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:20:39,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 796 [2023-08-30 15:20:39,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:20:58,598 INFO L130 PetriNetUnfolder]: 125016/161650 cut-off events. [2023-08-30 15:20:58,598 INFO L131 PetriNetUnfolder]: For 801/801 co-relation queries the response was YES. [2023-08-30 15:20:58,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326722 conditions, 161650 events. 125016/161650 cut-off events. For 801/801 co-relation queries the response was YES. Maximal size of possible extension queue 9260. Compared 1075600 event pairs, 78150 based on Foata normal form. 0/60605 useless extension candidates. Maximal degree in co-relation 195998. Up to 80831 conditions per place. [2023-08-30 15:20:59,279 INFO L137 encePairwiseOnDemand]: 792/796 looper letters, 133 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2023-08-30 15:20:59,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 138 transitions, 777 flow [2023-08-30 15:20:59,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:20:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:20:59,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1081 transitions. [2023-08-30 15:20:59,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45268006700167507 [2023-08-30 15:20:59,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1081 transitions. [2023-08-30 15:20:59,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1081 transitions. [2023-08-30 15:20:59,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:20:59,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1081 transitions. [2023-08-30 15:20:59,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.3333333333333) internal successors, (1081), 3 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:59,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:59,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:59,292 INFO L175 Difference]: Start difference. First operand has 68 places, 81 transitions, 327 flow. Second operand 3 states and 1081 transitions. [2023-08-30 15:20:59,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 138 transitions, 777 flow [2023-08-30 15:20:59,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 138 transitions, 736 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-30 15:20:59,299 INFO L231 Difference]: Finished difference. Result has 70 places, 82 transitions, 311 flow [2023-08-30 15:20:59,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=70, PETRI_TRANSITIONS=82} [2023-08-30 15:20:59,301 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2023-08-30 15:20:59,301 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 82 transitions, 311 flow [2023-08-30 15:20:59,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 325.6666666666667) internal successors, (977), 3 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:59,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:20:59,302 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:20:59,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 15:20:59,302 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-30 15:20:59,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:20:59,303 INFO L85 PathProgramCache]: Analyzing trace with hash -191911328, now seen corresponding path program 2 times [2023-08-30 15:20:59,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:20:59,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679909620] [2023-08-30 15:20:59,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:20:59,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:20:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:20:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:20:59,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:20:59,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679909620] [2023-08-30 15:20:59,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679909620] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:20:59,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756943583] [2023-08-30 15:20:59,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:20:59,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:20:59,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:20:59,405 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:20:59,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:20:59,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:20:59,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:20:59,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:20:59,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:20:59,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:20:59,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:20:59,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756943583] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:20:59,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:20:59,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:20:59,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216032951] [2023-08-30 15:20:59,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:20:59,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:20:59,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:20:59,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:20:59,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:20:59,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 796 [2023-08-30 15:20:59,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 82 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:20:59,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:20:59,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 796 [2023-08-30 15:20:59,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:21:18,795 INFO L130 PetriNetUnfolder]: 125261/161894 cut-off events. [2023-08-30 15:21:18,795 INFO L131 PetriNetUnfolder]: For 814/814 co-relation queries the response was YES. [2023-08-30 15:21:19,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327228 conditions, 161894 events. 125261/161894 cut-off events. For 814/814 co-relation queries the response was YES. Maximal size of possible extension queue 9374. Compared 1076223 event pairs, 78290 based on Foata normal form. 1/60575 useless extension candidates. Maximal degree in co-relation 196308. Up to 161689 conditions per place. [2023-08-30 15:21:19,490 INFO L137 encePairwiseOnDemand]: 793/796 looper letters, 72 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2023-08-30 15:21:19,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 81 transitions, 457 flow [2023-08-30 15:21:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:21:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:21:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1021 transitions. [2023-08-30 15:21:19,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275544388609715 [2023-08-30 15:21:19,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1021 transitions. [2023-08-30 15:21:19,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1021 transitions. [2023-08-30 15:21:19,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:21:19,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1021 transitions. [2023-08-30 15:21:19,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 340.3333333333333) internal successors, (1021), 3 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:19,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:19,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:19,502 INFO L175 Difference]: Start difference. First operand has 70 places, 82 transitions, 311 flow. Second operand 3 states and 1021 transitions. [2023-08-30 15:21:19,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 81 transitions, 457 flow [2023-08-30 15:21:19,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 81 transitions, 455 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:21:19,504 INFO L231 Difference]: Finished difference. Result has 70 places, 81 transitions, 311 flow [2023-08-30 15:21:19,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=311, PETRI_PLACES=70, PETRI_TRANSITIONS=81} [2023-08-30 15:21:19,505 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -1 predicate places. [2023-08-30 15:21:19,505 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 81 transitions, 311 flow [2023-08-30 15:21:19,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:19,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:21:19,506 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-30 15:21:19,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 15:21:19,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:21:19,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-30 15:21:19,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:21:19,713 INFO L85 PathProgramCache]: Analyzing trace with hash 175670872, now seen corresponding path program 1 times [2023-08-30 15:21:19,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:21:19,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241492271] [2023-08-30 15:21:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:21:19,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:21:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:21:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:19,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:21:19,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241492271] [2023-08-30 15:21:19,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241492271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:21:19,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:21:19,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:21:19,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755026490] [2023-08-30 15:21:19,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:21:19,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:21:19,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:21:19,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:21:19,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:21:19,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 796 [2023-08-30 15:21:19,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 81 transitions, 311 flow. Second operand has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:19,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:21:19,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 796 [2023-08-30 15:21:19,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:21:38,619 INFO L130 PetriNetUnfolder]: 125261/161889 cut-off events. [2023-08-30 15:21:38,620 INFO L131 PetriNetUnfolder]: For 812/812 co-relation queries the response was YES. [2023-08-30 15:21:38,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327214 conditions, 161889 events. 125261/161889 cut-off events. For 812/812 co-relation queries the response was YES. Maximal size of possible extension queue 9374. Compared 1076044 event pairs, 78290 based on Foata normal form. 0/60574 useless extension candidates. Maximal degree in co-relation 327157. Up to 161672 conditions per place. [2023-08-30 15:21:39,308 INFO L137 encePairwiseOnDemand]: 794/796 looper letters, 76 selfloop transitions, 1 changer transitions 0/80 dead transitions. [2023-08-30 15:21:39,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 80 transitions, 461 flow [2023-08-30 15:21:39,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:21:39,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:21:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1029 transitions. [2023-08-30 15:21:39,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43090452261306533 [2023-08-30 15:21:39,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1029 transitions. [2023-08-30 15:21:39,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1029 transitions. [2023-08-30 15:21:39,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:21:39,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1029 transitions. [2023-08-30 15:21:39,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:39,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:39,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 796.0) internal successors, (3184), 4 states have internal predecessors, (3184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:39,318 INFO L175 Difference]: Start difference. First operand has 70 places, 81 transitions, 311 flow. Second operand 3 states and 1029 transitions. [2023-08-30 15:21:39,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 80 transitions, 461 flow [2023-08-30 15:21:39,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 449 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:21:39,320 INFO L231 Difference]: Finished difference. Result has 69 places, 80 transitions, 297 flow [2023-08-30 15:21:39,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=69, PETRI_TRANSITIONS=80} [2023-08-30 15:21:39,321 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -2 predicate places. [2023-08-30 15:21:39,321 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 80 transitions, 297 flow [2023-08-30 15:21:39,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.3333333333333) internal successors, (979), 3 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:39,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:21:39,322 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:21:39,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:21:39,322 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-30 15:21:39,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:21:39,322 INFO L85 PathProgramCache]: Analyzing trace with hash 140765652, now seen corresponding path program 1 times [2023-08-30 15:21:39,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:21:39,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751162995] [2023-08-30 15:21:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:21:39,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:21:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:21:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:21:39,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:21:39,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751162995] [2023-08-30 15:21:39,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751162995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:21:39,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:21:39,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:21:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837843937] [2023-08-30 15:21:39,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:21:39,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:21:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:21:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:21:39,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:21:39,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 796 [2023-08-30 15:21:39,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 80 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:39,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:21:39,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 796 [2023-08-30 15:21:39,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:21:56,374 INFO L130 PetriNetUnfolder]: 112737/145707 cut-off events. [2023-08-30 15:21:56,374 INFO L131 PetriNetUnfolder]: For 735/735 co-relation queries the response was YES. [2023-08-30 15:21:56,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294519 conditions, 145707 events. 112737/145707 cut-off events. For 735/735 co-relation queries the response was YES. Maximal size of possible extension queue 8962. Compared 965885 event pairs, 70461 based on Foata normal form. 2/54525 useless extension candidates. Maximal degree in co-relation 163610. Up to 145520 conditions per place. [2023-08-30 15:21:56,993 INFO L137 encePairwiseOnDemand]: 789/796 looper letters, 70 selfloop transitions, 10 changer transitions 0/83 dead transitions. [2023-08-30 15:21:56,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 473 flow [2023-08-30 15:21:56,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:21:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:21:56,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1304 transitions. [2023-08-30 15:21:56,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40954773869346733 [2023-08-30 15:21:56,996 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1304 transitions. [2023-08-30 15:21:56,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1304 transitions. [2023-08-30 15:21:56,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:21:56,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1304 transitions. [2023-08-30 15:21:56,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:57,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 796.0) internal successors, (3980), 5 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:57,004 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 796.0) internal successors, (3980), 5 states have internal predecessors, (3980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:57,004 INFO L175 Difference]: Start difference. First operand has 69 places, 80 transitions, 297 flow. Second operand 4 states and 1304 transitions. [2023-08-30 15:21:57,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 473 flow [2023-08-30 15:21:57,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:21:57,007 INFO L231 Difference]: Finished difference. Result has 73 places, 82 transitions, 343 flow [2023-08-30 15:21:57,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=796, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=343, PETRI_PLACES=73, PETRI_TRANSITIONS=82} [2023-08-30 15:21:57,007 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2023-08-30 15:21:57,008 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 82 transitions, 343 flow [2023-08-30 15:21:57,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:57,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:21:57,009 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-30 15:21:57,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:21:57,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-08-30 15:21:57,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:21:57,009 INFO L85 PathProgramCache]: Analyzing trace with hash 175670874, now seen corresponding path program 1 times [2023-08-30 15:21:57,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:21:57,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070011551] [2023-08-30 15:21:57,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:21:57,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:21:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:21:57,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:57,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:21:57,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070011551] [2023-08-30 15:21:57,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070011551] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:21:57,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641136505] [2023-08-30 15:21:57,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:21:57,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:21:57,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:21:57,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:21:57,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:21:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:21:57,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:21:57,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:21:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:57,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:21:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:21:57,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641136505] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:21:57,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:21:57,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 15:21:57,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388898565] [2023-08-30 15:21:57,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:21:57,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:21:57,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:21:57,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:21:57,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:21:57,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 796 [2023-08-30 15:21:57,311 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 82 transitions, 343 flow. Second operand has 7 states, 7 states have (on average 326.14285714285717) internal successors, (2283), 7 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:21:57,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:21:57,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 796 [2023-08-30 15:21:57,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand