./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/test-context1.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/test-context1.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 a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 08:37:33,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:37:33,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:37:33,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:37:33,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:37:33,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:37:33,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:37:33,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:37:33,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:37:33,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:37:33,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:37:33,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:37:33,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:37:33,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:37:33,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:37:33,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:37:33,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:37:33,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:37:33,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:37:33,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:37:33,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:37:33,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:37:33,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:37:33,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:37:33,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:37:33,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:37:33,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:37:33,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:37:33,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:37:33,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:37:33,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:37:33,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:37:33,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:37:33,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:37:33,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:37:33,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:37:33,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:37:33,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:37:33,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:37:33,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:37:33,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:37:33,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:37:33,180 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:37:33,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:37:33,181 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:37:33,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:37:33,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:37:33,183 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:37:33,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:37:33,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:37:33,184 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:37:33,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:37:33,185 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:37:33,185 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:37:33,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:37:33,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:37:33,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:37:33,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:37:33,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:37:33,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:37:33,187 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:37:33,187 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:37:33,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:37:33,187 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:37:33,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:37:33,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:37:33,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:37:33,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:37:33,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:37:33,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:37:33,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:37:33,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:37:33,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:37:33,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:37:33,190 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:37:33,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:37:33,190 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:37:33,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:37:33,191 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:37:33,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6c10414fe2617d00008bf9d366bc6ac1618cf93ea0f6ae08bc6c5a126364bce Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:37:33,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:37:33,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:37:33,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:37:33,524 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:37:33,525 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:37:33,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2023-09-01 08:37:34,722 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:37:34,939 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:37:34,940 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2023-09-01 08:37:34,945 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a3af139f/c7210a0099ad45ab8566495abf4d7ece/FLAG132115830 [2023-09-01 08:37:34,956 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a3af139f/c7210a0099ad45ab8566495abf4d7ece [2023-09-01 08:37:34,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:37:34,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:37:34,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:37:34,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:37:34,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:37:34,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:37:34" (1/1) ... [2023-09-01 08:37:34,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb806ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:34, skipping insertion in model container [2023-09-01 08:37:34,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:37:34" (1/1) ... [2023-09-01 08:37:34,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:37:34,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:37:35,126 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/test-context1.wvr.c[2433,2446] [2023-09-01 08:37:35,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:37:35,140 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:37:35,173 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/test-context1.wvr.c[2433,2446] [2023-09-01 08:37:35,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:37:35,185 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:37:35,187 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:37:35,192 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:37:35,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:35 WrapperNode [2023-09-01 08:37:35,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:37:35,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:37:35,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:37:35,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:37:35,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:35" (1/1) ... [2023-09-01 08:37:35,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:35" (1/1) ... [2023-09-01 08:37:35,243 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 153 [2023-09-01 08:37:35,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:37:35,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:37:35,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:37:35,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:37:35,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:35" (1/1) ... [2023-09-01 08:37:35,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:35" (1/1) ... [2023-09-01 08:37:35,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:35" (1/1) ... [2023-09-01 08:37:35,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:35" (1/1) ... [2023-09-01 08:37:35,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:35" (1/1) ... [2023-09-01 08:37:35,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:35" (1/1) ... [2023-09-01 08:37:35,288 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:35" (1/1) ... [2023-09-01 08:37:35,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:35" (1/1) ... [2023-09-01 08:37:35,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:37:35,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:37:35,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:37:35,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:37:35,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:35" (1/1) ... [2023-09-01 08:37:35,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:37:35,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:35,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 08:37:35,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 08:37:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:37:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:37:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:37:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:37:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:37:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:37:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:37:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:37:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:37:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:37:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:37:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:37:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:37:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:37:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:37:35,379 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 08:37:35,506 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:37:35,508 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:37:35,834 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:37:36,074 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:37:36,074 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 08:37:36,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:37:36 BoogieIcfgContainer [2023-09-01 08:37:36,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:37:36,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:37:36,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:37:36,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:37:36,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:37:34" (1/3) ... [2023-09-01 08:37:36,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8f0cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:37:36, skipping insertion in model container [2023-09-01 08:37:36,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:37:35" (2/3) ... [2023-09-01 08:37:36,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b8f0cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:37:36, skipping insertion in model container [2023-09-01 08:37:36,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:37:36" (3/3) ... [2023-09-01 08:37:36,083 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2023-09-01 08:37:36,089 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:37:36,097 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:37:36,097 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-09-01 08:37:36,097 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:37:36,168 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 08:37:36,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 124 transitions, 264 flow [2023-09-01 08:37:36,245 INFO L130 PetriNetUnfolder]: 9/122 cut-off events. [2023-09-01 08:37:36,245 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 08:37:36,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 122 events. 9/122 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 132 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-09-01 08:37:36,251 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 124 transitions, 264 flow [2023-09-01 08:37:36,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 106 transitions, 221 flow [2023-09-01 08:37:36,257 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:37:36,265 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 106 transitions, 221 flow [2023-09-01 08:37:36,268 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 106 transitions, 221 flow [2023-09-01 08:37:36,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 106 transitions, 221 flow [2023-09-01 08:37:36,332 INFO L130 PetriNetUnfolder]: 8/106 cut-off events. [2023-09-01 08:37:36,333 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:37:36,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 106 events. 8/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 129 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-09-01 08:37:36,336 INFO L119 LiptonReduction]: Number of co-enabled transitions 904 [2023-09-01 08:37:41,635 INFO L134 LiptonReduction]: Checked pairs total: 1362 [2023-09-01 08:37:41,636 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-09-01 08:37:41,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:37:41,654 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;@92bce2b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:37:41,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-09-01 08:37:41,657 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:37:41,658 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:37:41,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:41,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:37:41,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:41,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:41,665 INFO L85 PathProgramCache]: Analyzing trace with hash 20531, now seen corresponding path program 1 times [2023-09-01 08:37:41,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:41,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856762873] [2023-09-01 08:37:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:41,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:41,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:41,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:41,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856762873] [2023-09-01 08:37:41,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856762873] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:41,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:37:41,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:37:41,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424013475] [2023-09-01 08:37:41,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:41,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:37:41,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:41,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:37:41,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:37:41,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-09-01 08:37:41,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:41,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:41,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-09-01 08:37:41,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:42,115 INFO L130 PetriNetUnfolder]: 187/329 cut-off events. [2023-09-01 08:37:42,116 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-09-01 08:37:42,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 329 events. 187/329 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1237 event pairs, 138 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 300. Up to 167 conditions per place. [2023-09-01 08:37:42,121 INFO L137 encePairwiseOnDemand]: 242/252 looper letters, 37 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-09-01 08:37:42,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 39 transitions, 174 flow [2023-09-01 08:37:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:42,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-09-01 08:37:42,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2023-09-01 08:37:42,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-09-01 08:37:42,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-09-01 08:37:42,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:42,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-09-01 08:37:42,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:42,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:42,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:42,153 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 63 flow. Second operand 3 states and 344 transitions. [2023-09-01 08:37:42,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 39 transitions, 174 flow [2023-09-01 08:37:42,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 39 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:37:42,157 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 60 flow [2023-09-01 08:37:42,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2023-09-01 08:37:42,161 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -6 predicate places. [2023-09-01 08:37:42,162 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 60 flow [2023-09-01 08:37:42,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:42,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:42,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:37:42,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:37:42,163 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:42,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:42,163 INFO L85 PathProgramCache]: Analyzing trace with hash 637276, now seen corresponding path program 1 times [2023-09-01 08:37:42,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:42,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138583735] [2023-09-01 08:37:42,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:42,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:42,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:42,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138583735] [2023-09-01 08:37:42,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138583735] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:42,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803201789] [2023-09-01 08:37:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:42,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:42,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:42,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:42,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 08:37:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:42,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:37:42,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:42,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:37:42,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803201789] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:42,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:37:42,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-09-01 08:37:42,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231147693] [2023-09-01 08:37:42,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:42,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:37:42,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:37:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 08:37:42,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-09-01 08:37:42,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:42,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:42,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-09-01 08:37:42,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:42,522 INFO L130 PetriNetUnfolder]: 187/328 cut-off events. [2023-09-01 08:37:42,522 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:37:42,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 328 events. 187/328 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1223 event pairs, 138 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 343. Up to 165 conditions per place. [2023-09-01 08:37:42,524 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 36 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-09-01 08:37:42,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 38 transitions, 170 flow [2023-09-01 08:37:42,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:37:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:37:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 427 transitions. [2023-09-01 08:37:42,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2023-09-01 08:37:42,526 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 427 transitions. [2023-09-01 08:37:42,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 427 transitions. [2023-09-01 08:37:42,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:42,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 427 transitions. [2023-09-01 08:37:42,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:42,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:42,531 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:42,531 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 60 flow. Second operand 4 states and 427 transitions. [2023-09-01 08:37:42,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 38 transitions, 170 flow [2023-09-01 08:37:42,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:37:42,532 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 58 flow [2023-09-01 08:37:42,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=58, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-09-01 08:37:42,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -5 predicate places. [2023-09-01 08:37:42,533 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 58 flow [2023-09-01 08:37:42,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:42,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:42,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:37:42,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:42,741 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 [2023-09-01 08:37:42,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:42,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:42,742 INFO L85 PathProgramCache]: Analyzing trace with hash 637277, now seen corresponding path program 1 times [2023-09-01 08:37:42,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:42,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223925809] [2023-09-01 08:37:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:42,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:42,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223925809] [2023-09-01 08:37:42,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223925809] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301733585] [2023-09-01 08:37:42,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:42,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:42,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:42,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:42,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 08:37:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:42,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:37:42,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:42,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:42,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301733585] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:37:42,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:37:42,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:37:42,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092096039] [2023-09-01 08:37:42,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:37:42,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:37:42,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:42,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:37:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:37:43,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-09-01 08:37:43,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 58 flow. Second operand has 7 states, 7 states have (on average 98.14285714285714) internal successors, (687), 7 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:43,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-09-01 08:37:43,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:43,223 INFO L130 PetriNetUnfolder]: 466/817 cut-off events. [2023-09-01 08:37:43,223 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:37:43,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1712 conditions, 817 events. 466/817 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3875 event pairs, 345 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 1363. Up to 166 conditions per place. [2023-09-01 08:37:43,230 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 87 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2023-09-01 08:37:43,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 92 transitions, 406 flow [2023-09-01 08:37:43,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:37:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:37:43,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 677 transitions. [2023-09-01 08:37:43,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44775132275132273 [2023-09-01 08:37:43,233 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 677 transitions. [2023-09-01 08:37:43,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 677 transitions. [2023-09-01 08:37:43,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:43,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 677 transitions. [2023-09-01 08:37:43,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 112.83333333333333) internal successors, (677), 6 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,241 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,241 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 58 flow. Second operand 6 states and 677 transitions. [2023-09-01 08:37:43,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 92 transitions, 406 flow [2023-09-01 08:37:43,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 92 transitions, 403 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:37:43,244 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 91 flow [2023-09-01 08:37:43,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-09-01 08:37:43,245 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-09-01 08:37:43,248 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 91 flow [2023-09-01 08:37:43,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.14285714285714) internal successors, (687), 7 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:43,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:37:43,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 08:37:43,454 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 [2023-09-01 08:37:43,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:43,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:43,456 INFO L85 PathProgramCache]: Analyzing trace with hash 19744847, now seen corresponding path program 1 times [2023-09-01 08:37:43,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:43,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28278912] [2023-09-01 08:37:43,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:43,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:43,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:43,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:43,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28278912] [2023-09-01 08:37:43,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28278912] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:43,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:37:43,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:37:43,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928771182] [2023-09-01 08:37:43,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:43,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:37:43,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:43,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:37:43,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:37:43,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-09-01 08:37:43,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:43,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-09-01 08:37:43,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:43,589 INFO L130 PetriNetUnfolder]: 396/697 cut-off events. [2023-09-01 08:37:43,589 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 08:37:43,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 697 events. 396/697 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3196 event pairs, 285 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 1173. Up to 697 conditions per place. [2023-09-01 08:37:43,593 INFO L137 encePairwiseOnDemand]: 250/252 looper letters, 22 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-09-01 08:37:43,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 135 flow [2023-09-01 08:37:43,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:43,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 317 transitions. [2023-09-01 08:37:43,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4193121693121693 [2023-09-01 08:37:43,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 317 transitions. [2023-09-01 08:37:43,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 317 transitions. [2023-09-01 08:37:43,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:43,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 317 transitions. [2023-09-01 08:37:43,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,598 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 91 flow. Second operand 3 states and 317 transitions. [2023-09-01 08:37:43,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 135 flow [2023-09-01 08:37:43,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 127 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 08:37:43,600 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 83 flow [2023-09-01 08:37:43,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-09-01 08:37:43,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-09-01 08:37:43,601 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 83 flow [2023-09-01 08:37:43,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:43,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:37:43,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:37:43,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:43,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:43,602 INFO L85 PathProgramCache]: Analyzing trace with hash 19744844, now seen corresponding path program 1 times [2023-09-01 08:37:43,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:43,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020867450] [2023-09-01 08:37:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:43,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:43,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:43,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020867450] [2023-09-01 08:37:43,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020867450] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:43,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:37:43,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:37:43,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681885993] [2023-09-01 08:37:43,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:43,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:37:43,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:43,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:37:43,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:37:43,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-09-01 08:37:43,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:43,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-09-01 08:37:43,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:43,758 INFO L130 PetriNetUnfolder]: 526/967 cut-off events. [2023-09-01 08:37:43,758 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-09-01 08:37:43,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2054 conditions, 967 events. 526/967 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5237 event pairs, 205 based on Foata normal form. 0/497 useless extension candidates. Maximal degree in co-relation 2042. Up to 711 conditions per place. [2023-09-01 08:37:43,763 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 28 selfloop transitions, 2 changer transitions 3/33 dead transitions. [2023-09-01 08:37:43,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 172 flow [2023-09-01 08:37:43,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:43,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:43,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-09-01 08:37:43,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2023-09-01 08:37:43,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-09-01 08:37:43,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-09-01 08:37:43,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:43,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-09-01 08:37:43,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,768 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,768 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 83 flow. Second operand 3 states and 330 transitions. [2023-09-01 08:37:43,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 172 flow [2023-09-01 08:37:43,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:37:43,770 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 100 flow [2023-09-01 08:37:43,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2023-09-01 08:37:43,771 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-09-01 08:37:43,771 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 100 flow [2023-09-01 08:37:43,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:43,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:37:43,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:37:43,772 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:43,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash 19744848, now seen corresponding path program 1 times [2023-09-01 08:37:43,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:43,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986510482] [2023-09-01 08:37:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:43,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:43,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:43,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:43,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986510482] [2023-09-01 08:37:43,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986510482] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:43,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:37:43,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:37:43,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119637759] [2023-09-01 08:37:43,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:43,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:37:43,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:43,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:37:43,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:37:43,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-09-01 08:37:43,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:43,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-09-01 08:37:43,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:43,942 INFO L130 PetriNetUnfolder]: 676/1177 cut-off events. [2023-09-01 08:37:43,942 INFO L131 PetriNetUnfolder]: For 123/123 co-relation queries the response was YES. [2023-09-01 08:37:43,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2936 conditions, 1177 events. 676/1177 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5998 event pairs, 225 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 2922. Up to 681 conditions per place. [2023-09-01 08:37:43,949 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 31 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2023-09-01 08:37:43,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 197 flow [2023-09-01 08:37:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:43,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:43,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-09-01 08:37:43,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2023-09-01 08:37:43,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-09-01 08:37:43,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-09-01 08:37:43,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:43,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-09-01 08:37:43,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,954 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,954 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 100 flow. Second operand 3 states and 328 transitions. [2023-09-01 08:37:43,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 197 flow [2023-09-01 08:37:43,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:37:43,958 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 123 flow [2023-09-01 08:37:43,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-09-01 08:37:43,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-09-01 08:37:43,960 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 123 flow [2023-09-01 08:37:43,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:43,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:43,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:37:43,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 08:37:43,961 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:43,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash 19744843, now seen corresponding path program 1 times [2023-09-01 08:37:43,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:43,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950045901] [2023-09-01 08:37:43,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:43,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:44,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:44,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950045901] [2023-09-01 08:37:44,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950045901] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:44,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:37:44,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:37:44,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916085393] [2023-09-01 08:37:44,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:44,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:37:44,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:44,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:37:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:37:44,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 252 [2023-09-01 08:37:44,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:44,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:44,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 252 [2023-09-01 08:37:44,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:44,146 INFO L130 PetriNetUnfolder]: 646/1117 cut-off events. [2023-09-01 08:37:44,147 INFO L131 PetriNetUnfolder]: For 218/218 co-relation queries the response was YES. [2023-09-01 08:37:44,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3198 conditions, 1117 events. 646/1117 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5665 event pairs, 225 based on Foata normal form. 0/807 useless extension candidates. Maximal degree in co-relation 3182. Up to 981 conditions per place. [2023-09-01 08:37:44,152 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 28 selfloop transitions, 2 changer transitions 3/33 dead transitions. [2023-09-01 08:37:44,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 206 flow [2023-09-01 08:37:44,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-09-01 08:37:44,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2023-09-01 08:37:44,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-09-01 08:37:44,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-09-01 08:37:44,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:44,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-09-01 08:37:44,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:44,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:44,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:44,157 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 123 flow. Second operand 3 states and 328 transitions. [2023-09-01 08:37:44,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 206 flow [2023-09-01 08:37:44,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:37:44,159 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 128 flow [2023-09-01 08:37:44,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-09-01 08:37:44,160 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2023-09-01 08:37:44,160 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 128 flow [2023-09-01 08:37:44,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:44,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:44,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:37:44,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 08:37:44,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:44,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:44,162 INFO L85 PathProgramCache]: Analyzing trace with hash 612090767, now seen corresponding path program 1 times [2023-09-01 08:37:44,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:44,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002563903] [2023-09-01 08:37:44,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:44,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:44,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:44,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002563903] [2023-09-01 08:37:44,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002563903] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:44,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472632965] [2023-09-01 08:37:44,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:44,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:44,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:44,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:44,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 08:37:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:44,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:37:44,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:44,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:37:44,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472632965] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:44,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:37:44,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2023-09-01 08:37:44,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525360451] [2023-09-01 08:37:44,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:44,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:37:44,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:44,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:37:44,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:37:44,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 252 [2023-09-01 08:37:44,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:44,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:44,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 252 [2023-09-01 08:37:44,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:44,512 INFO L130 PetriNetUnfolder]: 526/921 cut-off events. [2023-09-01 08:37:44,512 INFO L131 PetriNetUnfolder]: For 307/307 co-relation queries the response was YES. [2023-09-01 08:37:44,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2650 conditions, 921 events. 526/921 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4419 event pairs, 373 based on Foata normal form. 6/735 useless extension candidates. Maximal degree in co-relation 2632. Up to 895 conditions per place. [2023-09-01 08:37:44,516 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 24 selfloop transitions, 2 changer transitions 9/35 dead transitions. [2023-09-01 08:37:44,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 220 flow [2023-09-01 08:37:44,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:37:44,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:37:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2023-09-01 08:37:44,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2023-09-01 08:37:44,518 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 402 transitions. [2023-09-01 08:37:44,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 402 transitions. [2023-09-01 08:37:44,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:44,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 402 transitions. [2023-09-01 08:37:44,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:44,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:44,521 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:44,522 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 128 flow. Second operand 4 states and 402 transitions. [2023-09-01 08:37:44,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 220 flow [2023-09-01 08:37:44,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:37:44,524 INFO L231 Difference]: Finished difference. Result has 41 places, 26 transitions, 134 flow [2023-09-01 08:37:44,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=41, PETRI_TRANSITIONS=26} [2023-09-01 08:37:44,525 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2023-09-01 08:37:44,525 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 26 transitions, 134 flow [2023-09-01 08:37:44,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:44,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:44,525 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:37:44,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:44,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:44,732 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:44,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:44,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1806029428, now seen corresponding path program 2 times [2023-09-01 08:37:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:44,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159202810] [2023-09-01 08:37:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:44,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:44,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:44,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159202810] [2023-09-01 08:37:44,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159202810] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:44,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912698506] [2023-09-01 08:37:44,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:37:44,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:44,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:44,796 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:44,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:37:44,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:37:44,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:37:44,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:37:44,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 08:37:44,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:37:44,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912698506] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:44,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:37:44,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:37:44,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34043425] [2023-09-01 08:37:44,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:44,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:37:44,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:44,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:37:44,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:37:44,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 252 [2023-09-01 08:37:44,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 26 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:44,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:44,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 252 [2023-09-01 08:37:44,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:45,013 INFO L130 PetriNetUnfolder]: 517/894 cut-off events. [2023-09-01 08:37:45,014 INFO L131 PetriNetUnfolder]: For 291/291 co-relation queries the response was YES. [2023-09-01 08:37:45,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 894 events. 517/894 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4243 event pairs, 364 based on Foata normal form. 1/703 useless extension candidates. Maximal degree in co-relation 2575. Up to 894 conditions per place. [2023-09-01 08:37:45,018 INFO L137 encePairwiseOnDemand]: 250/252 looper letters, 24 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-09-01 08:37:45,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 174 flow [2023-09-01 08:37:45,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:45,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:45,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 313 transitions. [2023-09-01 08:37:45,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.414021164021164 [2023-09-01 08:37:45,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 313 transitions. [2023-09-01 08:37:45,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 313 transitions. [2023-09-01 08:37:45,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:45,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 313 transitions. [2023-09-01 08:37:45,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,022 INFO L175 Difference]: Start difference. First operand has 41 places, 26 transitions, 134 flow. Second operand 3 states and 313 transitions. [2023-09-01 08:37:45,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 25 transitions, 174 flow [2023-09-01 08:37:45,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 25 transitions, 156 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-09-01 08:37:45,024 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 108 flow [2023-09-01 08:37:45,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2023-09-01 08:37:45,025 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2023-09-01 08:37:45,025 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 108 flow [2023-09-01 08:37:45,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:45,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:37:45,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:45,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:45,231 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:45,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:45,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1805671877, now seen corresponding path program 1 times [2023-09-01 08:37:45,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:45,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809526844] [2023-09-01 08:37:45,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:45,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:45,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:45,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809526844] [2023-09-01 08:37:45,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809526844] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:45,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:37:45,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:37:45,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813674017] [2023-09-01 08:37:45,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:45,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:37:45,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:45,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:37:45,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:37:45,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-09-01 08:37:45,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:45,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-09-01 08:37:45,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:45,402 INFO L130 PetriNetUnfolder]: 445/798 cut-off events. [2023-09-01 08:37:45,402 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2023-09-01 08:37:45,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 798 events. 445/798 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3879 event pairs, 164 based on Foata normal form. 24/670 useless extension candidates. Maximal degree in co-relation 2224. Up to 497 conditions per place. [2023-09-01 08:37:45,406 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 29 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-09-01 08:37:45,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 183 flow [2023-09-01 08:37:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:45,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:45,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-09-01 08:37:45,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421957671957672 [2023-09-01 08:37:45,409 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-09-01 08:37:45,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-09-01 08:37:45,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:45,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-09-01 08:37:45,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,412 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 108 flow. Second operand 3 states and 319 transitions. [2023-09-01 08:37:45,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 183 flow [2023-09-01 08:37:45,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:37:45,413 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 109 flow [2023-09-01 08:37:45,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2023-09-01 08:37:45,414 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2023-09-01 08:37:45,414 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 109 flow [2023-09-01 08:37:45,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:45,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 08:37:45,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 08:37:45,415 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:45,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:45,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1805671878, now seen corresponding path program 1 times [2023-09-01 08:37:45,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:45,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710688096] [2023-09-01 08:37:45,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:45,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:45,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:45,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710688096] [2023-09-01 08:37:45,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710688096] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:45,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807164419] [2023-09-01 08:37:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:45,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:45,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:45,460 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:45,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:37:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:45,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:37:45,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:45,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:45,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:45,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807164419] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:37:45,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:37:45,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:37:45,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574347454] [2023-09-01 08:37:45,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:37:45,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:37:45,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:45,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:37:45,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:37:45,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-09-01 08:37:45,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 109 flow. Second operand has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:45,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-09-01 08:37:45,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:45,856 INFO L130 PetriNetUnfolder]: 1261/2246 cut-off events. [2023-09-01 08:37:45,857 INFO L131 PetriNetUnfolder]: For 1212/1212 co-relation queries the response was YES. [2023-09-01 08:37:45,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6473 conditions, 2246 events. 1261/2246 cut-off events. For 1212/1212 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 13699 event pairs, 252 based on Foata normal form. 40/2014 useless extension candidates. Maximal degree in co-relation 6456. Up to 785 conditions per place. [2023-09-01 08:37:45,866 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 60 selfloop transitions, 10 changer transitions 3/73 dead transitions. [2023-09-01 08:37:45,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 73 transitions, 442 flow [2023-09-01 08:37:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:37:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:37:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 668 transitions. [2023-09-01 08:37:45,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2023-09-01 08:37:45,868 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 668 transitions. [2023-09-01 08:37:45,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 668 transitions. [2023-09-01 08:37:45,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:45,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 668 transitions. [2023-09-01 08:37:45,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,873 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 252.0) internal successors, (1764), 7 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,873 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 109 flow. Second operand 6 states and 668 transitions. [2023-09-01 08:37:45,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 73 transitions, 442 flow [2023-09-01 08:37:45,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 73 transitions, 420 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-09-01 08:37:45,876 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 211 flow [2023-09-01 08:37:45,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=211, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-09-01 08:37:45,877 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2023-09-01 08:37:45,877 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 211 flow [2023-09-01 08:37:45,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:45,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:45,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:45,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:46,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-09-01 08:37:46,086 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:46,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:46,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1681860594, now seen corresponding path program 1 times [2023-09-01 08:37:46,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:46,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776411992] [2023-09-01 08:37:46,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:46,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:46,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:46,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776411992] [2023-09-01 08:37:46,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776411992] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:46,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063828181] [2023-09-01 08:37:46,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:46,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:46,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:46,142 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:46,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:37:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:46,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 08:37:46,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:46,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:37:46,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063828181] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:46,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:37:46,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-09-01 08:37:46,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313039108] [2023-09-01 08:37:46,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:46,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:37:46,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:46,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:37:46,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 08:37:46,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 252 [2023-09-01 08:37:46,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 211 flow. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:46,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:46,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 252 [2023-09-01 08:37:46,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:46,453 INFO L130 PetriNetUnfolder]: 1057/1922 cut-off events. [2023-09-01 08:37:46,453 INFO L131 PetriNetUnfolder]: For 3132/3132 co-relation queries the response was YES. [2023-09-01 08:37:46,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6652 conditions, 1922 events. 1057/1922 cut-off events. For 3132/3132 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11449 event pairs, 452 based on Foata normal form. 152/2074 useless extension candidates. Maximal degree in co-relation 6632. Up to 1260 conditions per place. [2023-09-01 08:37:46,464 INFO L137 encePairwiseOnDemand]: 248/252 looper letters, 36 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-09-01 08:37:46,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 40 transitions, 327 flow [2023-09-01 08:37:46,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:37:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:37:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 418 transitions. [2023-09-01 08:37:46,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146825396825397 [2023-09-01 08:37:46,466 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 418 transitions. [2023-09-01 08:37:46,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 418 transitions. [2023-09-01 08:37:46,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:46,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 418 transitions. [2023-09-01 08:37:46,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:46,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:46,470 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:46,470 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 211 flow. Second operand 4 states and 418 transitions. [2023-09-01 08:37:46,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 40 transitions, 327 flow [2023-09-01 08:37:46,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 327 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 08:37:46,473 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 220 flow [2023-09-01 08:37:46,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-09-01 08:37:46,473 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2023-09-01 08:37:46,473 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 220 flow [2023-09-01 08:37:46,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:46,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:46,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:46,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:46,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:46,681 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:46,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:46,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1693479089, now seen corresponding path program 1 times [2023-09-01 08:37:46,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:46,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188469110] [2023-09-01 08:37:46,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:46,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:46,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:46,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:46,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188469110] [2023-09-01 08:37:46,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188469110] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:46,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854006013] [2023-09-01 08:37:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:46,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:46,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:46,754 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:46,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:37:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:46,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 08:37:46,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:46,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:46,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:46,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854006013] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:37:46,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:37:46,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 2] total 7 [2023-09-01 08:37:46,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725470535] [2023-09-01 08:37:46,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:37:46,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 08:37:46,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:46,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 08:37:46,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-09-01 08:37:46,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 252 [2023-09-01 08:37:46,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 220 flow. Second operand has 9 states, 9 states have (on average 99.55555555555556) internal successors, (896), 9 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:46,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:46,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 252 [2023-09-01 08:37:46,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:47,291 INFO L130 PetriNetUnfolder]: 1457/2658 cut-off events. [2023-09-01 08:37:47,291 INFO L131 PetriNetUnfolder]: For 5328/5328 co-relation queries the response was YES. [2023-09-01 08:37:47,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9103 conditions, 2658 events. 1457/2658 cut-off events. For 5328/5328 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17024 event pairs, 244 based on Foata normal form. 312/2970 useless extension candidates. Maximal degree in co-relation 9080. Up to 1205 conditions per place. [2023-09-01 08:37:47,303 INFO L137 encePairwiseOnDemand]: 246/252 looper letters, 50 selfloop transitions, 16 changer transitions 21/87 dead transitions. [2023-09-01 08:37:47,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 87 transitions, 618 flow [2023-09-01 08:37:47,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:37:47,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:37:47,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 950 transitions. [2023-09-01 08:37:47,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41887125220458554 [2023-09-01 08:37:47,307 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 950 transitions. [2023-09-01 08:37:47,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 950 transitions. [2023-09-01 08:37:47,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:47,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 950 transitions. [2023-09-01 08:37:47,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.55555555555556) internal successors, (950), 9 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:47,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:47,312 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 252.0) internal successors, (2520), 10 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:47,313 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 220 flow. Second operand 9 states and 950 transitions. [2023-09-01 08:37:47,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 87 transitions, 618 flow [2023-09-01 08:37:47,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 87 transitions, 612 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:37:47,317 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 380 flow [2023-09-01 08:37:47,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=380, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2023-09-01 08:37:47,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2023-09-01 08:37:47,318 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 380 flow [2023-09-01 08:37:47,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 99.55555555555556) internal successors, (896), 9 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:47,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:47,319 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-09-01 08:37:47,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:47,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:47,527 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:47,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:47,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1693866123, now seen corresponding path program 2 times [2023-09-01 08:37:47,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:47,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616782202] [2023-09-01 08:37:47,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:47,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:47,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:37:47,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:47,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616782202] [2023-09-01 08:37:47,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616782202] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:47,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277940313] [2023-09-01 08:37:47,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:37:47,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:47,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:47,632 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:47,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 08:37:47,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:37:47,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:37:47,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 08:37:47,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-09-01 08:37:47,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:37:47,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277940313] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:37:47,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:37:47,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-09-01 08:37:47,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515385542] [2023-09-01 08:37:47,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:37:47,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:37:47,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:47,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:37:47,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:37:47,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 252 [2023-09-01 08:37:47,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:47,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:47,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 252 [2023-09-01 08:37:47,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:47,969 INFO L130 PetriNetUnfolder]: 1233/2250 cut-off events. [2023-09-01 08:37:47,970 INFO L131 PetriNetUnfolder]: For 8620/8620 co-relation queries the response was YES. [2023-09-01 08:37:47,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8578 conditions, 2250 events. 1233/2250 cut-off events. For 8620/8620 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13918 event pairs, 920 based on Foata normal form. 152/2402 useless extension candidates. Maximal degree in co-relation 8552. Up to 2250 conditions per place. [2023-09-01 08:37:47,983 INFO L137 encePairwiseOnDemand]: 249/252 looper letters, 39 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-09-01 08:37:47,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 40 transitions, 434 flow [2023-09-01 08:37:47,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:37:47,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:37:47,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2023-09-01 08:37:47,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41534391534391535 [2023-09-01 08:37:47,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 314 transitions. [2023-09-01 08:37:47,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 314 transitions. [2023-09-01 08:37:47,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:47,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 314 transitions. [2023-09-01 08:37:47,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:47,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:47,988 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:47,988 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 380 flow. Second operand 3 states and 314 transitions. [2023-09-01 08:37:47,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 40 transitions, 434 flow [2023-09-01 08:37:47,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 381 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-09-01 08:37:48,000 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 303 flow [2023-09-01 08:37:48,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=303, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-09-01 08:37:48,001 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2023-09-01 08:37:48,001 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 303 flow [2023-09-01 08:37:48,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:48,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:48,002 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:48,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:48,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 08:37:48,211 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:48,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:48,212 INFO L85 PathProgramCache]: Analyzing trace with hash 442568441, now seen corresponding path program 2 times [2023-09-01 08:37:48,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:48,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377773464] [2023-09-01 08:37:48,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:48,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:48,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377773464] [2023-09-01 08:37:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377773464] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:48,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032885172] [2023-09-01 08:37:48,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:37:48,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:48,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:48,366 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:48,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 08:37:48,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:37:48,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:37:48,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 08:37:48,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:48,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:37:48,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032885172] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:37:48,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:37:48,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-09-01 08:37:48,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313911875] [2023-09-01 08:37:48,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:37:48,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 08:37:48,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:48,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 08:37:48,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-09-01 08:37:48,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 252 [2023-09-01 08:37:48,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 303 flow. Second operand has 14 states, 14 states have (on average 90.78571428571429) internal successors, (1271), 14 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:48,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:48,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 252 [2023-09-01 08:37:48,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:49,046 INFO L130 PetriNetUnfolder]: 960/1769 cut-off events. [2023-09-01 08:37:49,047 INFO L131 PetriNetUnfolder]: For 4104/4104 co-relation queries the response was YES. [2023-09-01 08:37:49,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6193 conditions, 1769 events. 960/1769 cut-off events. For 4104/4104 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10365 event pairs, 699 based on Foata normal form. 10/1779 useless extension candidates. Maximal degree in co-relation 6168. Up to 1688 conditions per place. [2023-09-01 08:37:49,069 INFO L137 encePairwiseOnDemand]: 247/252 looper letters, 37 selfloop transitions, 3 changer transitions 23/63 dead transitions. [2023-09-01 08:37:49,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 502 flow [2023-09-01 08:37:49,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 08:37:49,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 08:37:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 665 transitions. [2023-09-01 08:37:49,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2023-09-01 08:37:49,072 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 665 transitions. [2023-09-01 08:37:49,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 665 transitions. [2023-09-01 08:37:49,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:49,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 665 transitions. [2023-09-01 08:37:49,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:49,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:49,077 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 252.0) internal successors, (2016), 8 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:49,077 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 303 flow. Second operand 7 states and 665 transitions. [2023-09-01 08:37:49,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 502 flow [2023-09-01 08:37:49,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 501 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:37:49,083 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 320 flow [2023-09-01 08:37:49,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2023-09-01 08:37:49,084 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2023-09-01 08:37:49,084 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 320 flow [2023-09-01 08:37:49,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 90.78571428571429) internal successors, (1271), 14 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:49,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:37:49,085 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:49,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:49,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 08:37:49,291 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-09-01 08:37:49,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:37:49,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1403053040, now seen corresponding path program 3 times [2023-09-01 08:37:49,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:37:49,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874147270] [2023-09-01 08:37:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:49,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:37:49,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:37:49,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:49,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874147270] [2023-09-01 08:37:49,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874147270] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:49,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980270786] [2023-09-01 08:37:49,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 08:37:49,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:49,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:49,435 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:49,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 08:37:49,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 08:37:49,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:37:49,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:37:49,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:49,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:37:49,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:49,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:37:49,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980270786] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:37:49,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:37:49,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 2, 2] total 10 [2023-09-01 08:37:49,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113084866] [2023-09-01 08:37:49,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:37:49,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 08:37:49,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:37:49,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 08:37:49,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-09-01 08:37:49,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 252 [2023-09-01 08:37:49,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 320 flow. Second operand has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:49,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:37:49,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 252 [2023-09-01 08:37:49,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:37:50,005 INFO L130 PetriNetUnfolder]: 722/1346 cut-off events. [2023-09-01 08:37:50,005 INFO L131 PetriNetUnfolder]: For 3507/3507 co-relation queries the response was YES. [2023-09-01 08:37:50,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4520 conditions, 1346 events. 722/1346 cut-off events. For 3507/3507 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7674 event pairs, 457 based on Foata normal form. 92/1438 useless extension candidates. Maximal degree in co-relation 4490. Up to 1203 conditions per place. [2023-09-01 08:37:50,010 INFO L137 encePairwiseOnDemand]: 245/252 looper letters, 0 selfloop transitions, 0 changer transitions 72/72 dead transitions. [2023-09-01 08:37:50,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 570 flow [2023-09-01 08:37:50,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:37:50,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:37:50,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 943 transitions. [2023-09-01 08:37:50,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3742063492063492 [2023-09-01 08:37:50,014 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 943 transitions. [2023-09-01 08:37:50,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 943 transitions. [2023-09-01 08:37:50,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:37:50,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 943 transitions. [2023-09-01 08:37:50,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 94.3) internal successors, (943), 10 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:50,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:50,022 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 252.0) internal successors, (2772), 11 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:50,022 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 320 flow. Second operand 10 states and 943 transitions. [2023-09-01 08:37:50,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 570 flow [2023-09-01 08:37:50,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 72 transitions, 528 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-09-01 08:37:50,028 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-09-01 08:37:50,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-09-01 08:37:50,029 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2023-09-01 08:37:50,029 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-09-01 08:37:50,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:37:50,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 28 remaining) [2023-09-01 08:37:50,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2023-09-01 08:37:50,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2023-09-01 08:37:50,032 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2023-09-01 08:37:50,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2023-09-01 08:37:50,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2023-09-01 08:37:50,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2023-09-01 08:37:50,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2023-09-01 08:37:50,033 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2023-09-01 08:37:50,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2023-09-01 08:37:50,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2023-09-01 08:37:50,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2023-09-01 08:37:50,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 28 remaining) [2023-09-01 08:37:50,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 28 remaining) [2023-09-01 08:37:50,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 28 remaining) [2023-09-01 08:37:50,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 28 remaining) [2023-09-01 08:37:50,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2023-09-01 08:37:50,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2023-09-01 08:37:50,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2023-09-01 08:37:50,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2023-09-01 08:37:50,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2023-09-01 08:37:50,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2023-09-01 08:37:50,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2023-09-01 08:37:50,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2023-09-01 08:37:50,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2023-09-01 08:37:50,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2023-09-01 08:37:50,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2023-09-01 08:37:50,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2023-09-01 08:37:50,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 08:37:50,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 08:37:50,243 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:37:50,248 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 08:37:50,248 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 08:37:50,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 08:37:50 BasicIcfg [2023-09-01 08:37:50,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 08:37:50,252 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 08:37:50,252 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 08:37:50,252 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 08:37:50,252 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:37:36" (3/4) ... [2023-09-01 08:37:50,254 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 08:37:50,258 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 08:37:50,258 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 08:37:50,261 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-09-01 08:37:50,262 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 08:37:50,262 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 08:37:50,262 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 08:37:50,289 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 08:37:50,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 08:37:50,290 INFO L158 Benchmark]: Toolchain (without parser) took 15331.84ms. Allocated memory was 71.3MB in the beginning and 320.9MB in the end (delta: 249.6MB). Free memory was 49.1MB in the beginning and 247.8MB in the end (delta: -198.7MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. [2023-09-01 08:37:50,291 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 34.4MB in the beginning and 34.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 08:37:50,291 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.50ms. Allocated memory is still 71.3MB. Free memory was 48.9MB in the beginning and 37.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 08:37:50,291 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.86ms. Allocated memory is still 71.3MB. Free memory was 37.7MB in the beginning and 35.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:37:50,291 INFO L158 Benchmark]: Boogie Preprocessor took 52.23ms. Allocated memory is still 71.3MB. Free memory was 35.8MB in the beginning and 34.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:37:50,292 INFO L158 Benchmark]: RCFGBuilder took 778.62ms. Allocated memory is still 71.3MB. Free memory was 34.3MB in the beginning and 30.6MB in the end (delta: 3.7MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2023-09-01 08:37:50,292 INFO L158 Benchmark]: TraceAbstraction took 14173.37ms. Allocated memory was 71.3MB in the beginning and 320.9MB in the end (delta: 249.6MB). Free memory was 29.9MB in the beginning and 250.7MB in the end (delta: -220.8MB). Peak memory consumption was 137.9MB. Max. memory is 16.1GB. [2023-09-01 08:37:50,292 INFO L158 Benchmark]: Witness Printer took 38.20ms. Allocated memory is still 320.9MB. Free memory was 250.7MB in the beginning and 247.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 08:37:50,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 34.4MB in the beginning and 34.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.50ms. Allocated memory is still 71.3MB. Free memory was 48.9MB in the beginning and 37.7MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.86ms. Allocated memory is still 71.3MB. Free memory was 37.7MB in the beginning and 35.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.23ms. Allocated memory is still 71.3MB. Free memory was 35.8MB in the beginning and 34.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 778.62ms. Allocated memory is still 71.3MB. Free memory was 34.3MB in the beginning and 30.6MB in the end (delta: 3.7MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * TraceAbstraction took 14173.37ms. Allocated memory was 71.3MB in the beginning and 320.9MB in the end (delta: 249.6MB). Free memory was 29.9MB in the beginning and 250.7MB in the end (delta: -220.8MB). Peak memory consumption was 137.9MB. Max. memory is 16.1GB. * Witness Printer took 38.20ms. Allocated memory is still 320.9MB. Free memory was 250.7MB in the beginning and 247.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 105 PlacesBefore, 31 PlacesAfterwards, 106 TransitionsBefore, 27 TransitionsAfterwards, 904 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 12 TrivialYvCompositions, 7 ConcurrentYvCompositions, 5 ChoiceCompositions, 128 TotalNumberOfCompositions, 1362 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1334, independent: 1326, independent conditional: 0, independent unconditional: 1326, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 465, independent: 461, independent conditional: 0, independent unconditional: 461, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1334, independent: 865, independent conditional: 0, independent unconditional: 865, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 465, unknown conditional: 0, unknown unconditional: 465] , Statistics on independence cache: Total cache size (in pairs): 40, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 51]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 52]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 65]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 146 locations, 28 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.1s, OverallIterations: 16, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1020 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 870 mSDsluCounter, 228 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 192 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1494 IncrementalHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 36 mSDtfsCounter, 1494 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred in iteration=13, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 170 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 872 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1345 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 31 InterpolantComputations, 11 PerfectInterpolantSequences, 74/115 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 08:37:50,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE