/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 10:54:29,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 10:54:29,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 10:54:29,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 10:54:29,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 10:54:29,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 10:54:29,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 10:54:29,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 10:54:29,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 10:54:29,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 10:54:29,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 10:54:29,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 10:54:29,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 10:54:29,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 10:54:29,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 10:54:29,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 10:54:29,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 10:54:29,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 10:54:29,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 10:54:29,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 10:54:29,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 10:54:29,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 10:54:29,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 10:54:29,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 10:54:29,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 10:54:29,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 10:54:29,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 10:54:29,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 10:54:29,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 10:54:29,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 10:54:29,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 10:54:29,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 10:54:29,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 10:54:29,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 10:54:29,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 10:54:29,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 10:54:29,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 10:54:29,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 10:54:29,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 10:54:29,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 10:54:29,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 10:54:29,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-09-16 10:54:29,924 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 10:54:29,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 10:54:29,924 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 10:54:29,924 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 10:54:29,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 10:54:29,925 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 10:54:29,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 10:54:29,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 10:54:29,926 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 10:54:29,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 10:54:29,927 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 10:54:29,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 10:54:29,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 10:54:29,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 10:54:29,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 10:54:29,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 10:54:29,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 10:54:29,928 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 10:54:29,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 10:54:29,928 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 10:54:29,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 10:54:29,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 10:54:29,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 10:54:29,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 10:54:29,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 10:54:29,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 10:54:29,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 10:54:29,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 10:54:29,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 10:54:29,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 10:54:29,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 10:54:29,930 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 10:54:29,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 10:54:29,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 10:54:30,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 10:54:30,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 10:54:30,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 10:54:30,172 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 10:54:30,172 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 10:54:30,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2022-09-16 10:54:30,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a222855f8/1d9cdb5c1133414287adfe143c83d1c3/FLAGb5c79aa76 [2022-09-16 10:54:30,615 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 10:54:30,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2022-09-16 10:54:30,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a222855f8/1d9cdb5c1133414287adfe143c83d1c3/FLAGb5c79aa76 [2022-09-16 10:54:31,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a222855f8/1d9cdb5c1133414287adfe143c83d1c3 [2022-09-16 10:54:31,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 10:54:31,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 10:54:31,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 10:54:31,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 10:54:31,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 10:54:31,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 10:54:31" (1/1) ... [2022-09-16 10:54:31,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b2ff09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:54:31, skipping insertion in model container [2022-09-16 10:54:31,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 10:54:31" (1/1) ... [2022-09-16 10:54:31,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 10:54:31,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 10:54:31,224 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-09-16 10:54:31,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 10:54:31,243 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 10:54:31,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c[2755,2768] [2022-09-16 10:54:31,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 10:54:31,276 INFO L208 MainTranslator]: Completed translation [2022-09-16 10:54:31,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:54:31 WrapperNode [2022-09-16 10:54:31,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 10:54:31,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 10:54:31,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 10:54:31,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 10:54:31,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:54:31" (1/1) ... [2022-09-16 10:54:31,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:54:31" (1/1) ... [2022-09-16 10:54:31,333 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 395 [2022-09-16 10:54:31,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 10:54:31,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 10:54:31,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 10:54:31,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 10:54:31,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:54:31" (1/1) ... [2022-09-16 10:54:31,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:54:31" (1/1) ... [2022-09-16 10:54:31,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:54:31" (1/1) ... [2022-09-16 10:54:31,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:54:31" (1/1) ... [2022-09-16 10:54:31,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:54:31" (1/1) ... [2022-09-16 10:54:31,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:54:31" (1/1) ... [2022-09-16 10:54:31,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:54:31" (1/1) ... [2022-09-16 10:54:31,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 10:54:31,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 10:54:31,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 10:54:31,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 10:54:31,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:54:31" (1/1) ... [2022-09-16 10:54:31,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 10:54:31,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:54:31,419 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) [2022-09-16 10:54:31,424 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 [2022-09-16 10:54:31,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 10:54:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 10:54:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 10:54:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 10:54:31,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 10:54:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 10:54:31,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 10:54:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 10:54:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 10:54:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 10:54:31,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 10:54:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 10:54:31,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 10:54:31,449 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 10:54:31,537 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 10:54:31,538 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 10:54:32,222 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 10:54:32,238 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 10:54:32,238 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 10:54:32,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 10:54:32 BoogieIcfgContainer [2022-09-16 10:54:32,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 10:54:32,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 10:54:32,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 10:54:32,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 10:54:32,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 10:54:31" (1/3) ... [2022-09-16 10:54:32,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355caf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 10:54:32, skipping insertion in model container [2022-09-16 10:54:32,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 10:54:31" (2/3) ... [2022-09-16 10:54:32,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355caf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 10:54:32, skipping insertion in model container [2022-09-16 10:54:32,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 10:54:32" (3/3) ... [2022-09-16 10:54:32,249 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2022-09-16 10:54:32,254 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 10:54:32,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 10:54:32,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2022-09-16 10:54:32,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 10:54:32,406 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 10:54:32,441 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 546 places, 583 transitions, 1182 flow [2022-09-16 10:54:36,352 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 168050 states, 167320 states have (on average 2.9293987568730575) internal successors, (490147), 168049 states have internal predecessors, (490147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:54:36,372 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 10:54:36,380 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=FINITE_AUTOMATA, 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;@111c6a9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 10:54:36,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 108 error locations. [2022-09-16 10:54:36,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 168050 states, 167320 states have (on average 2.9293987568730575) internal successors, (490147), 168049 states have internal predecessors, (490147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:54:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-09-16 10:54:36,623 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:54:36,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:54:36,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:54:36,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:54:36,629 INFO L85 PathProgramCache]: Analyzing trace with hash 25266818, now seen corresponding path program 1 times [2022-09-16 10:54:36,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:54:36,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687747971] [2022-09-16 10:54:36,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:54:36,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:54:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:54:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:54:36,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:54:36,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687747971] [2022-09-16 10:54:36,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687747971] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:54:36,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:54:36,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:54:36,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048649882] [2022-09-16 10:54:36,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:54:36,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 10:54:36,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:54:36,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 10:54:36,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:54:37,278 INFO L87 Difference]: Start difference. First operand has 168050 states, 167320 states have (on average 2.9293987568730575) internal successors, (490147), 168049 states have internal predecessors, (490147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 26.0) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:54:41,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:54:41,477 INFO L93 Difference]: Finished difference Result 336024 states and 950672 transitions. [2022-09-16 10:54:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 10:54:41,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 26.0) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-09-16 10:54:41,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:54:43,458 INFO L225 Difference]: With dead ends: 336024 [2022-09-16 10:54:43,458 INFO L226 Difference]: Without dead ends: 334308 [2022-09-16 10:54:43,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 10:54:43,462 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 460 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 10:54:43,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1586 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 10:54:44,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334308 states. [2022-09-16 10:54:49,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334308 to 167198. [2022-09-16 10:54:49,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167198 states, 166052 states have (on average 2.8487642425264377) internal successors, (473043), 167197 states have internal predecessors, (473043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:54:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167198 states to 167198 states and 473043 transitions. [2022-09-16 10:54:51,152 INFO L78 Accepts]: Start accepts. Automaton has 167198 states and 473043 transitions. Word has length 78 [2022-09-16 10:54:51,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:54:51,153 INFO L495 AbstractCegarLoop]: Abstraction has 167198 states and 473043 transitions. [2022-09-16 10:54:51,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 26.0) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:54:51,153 INFO L276 IsEmpty]: Start isEmpty. Operand 167198 states and 473043 transitions. [2022-09-16 10:54:51,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-09-16 10:54:51,156 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:54:51,156 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:54:51,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 10:54:51,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:54:51,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:54:51,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2120409065, now seen corresponding path program 1 times [2022-09-16 10:54:51,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:54:51,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463249724] [2022-09-16 10:54:51,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:54:51,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:54:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:54:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:54:51,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:54:51,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463249724] [2022-09-16 10:54:51,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463249724] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:54:51,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671609245] [2022-09-16 10:54:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:54:51,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:54:51,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:54:51,256 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) [2022-09-16 10:54:51,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 10:54:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:54:51,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 10:54:51,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:54:51,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:54:51,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 10:54:51,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:54:51,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671609245] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 10:54:51,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 10:54:51,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 10:54:51,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204964850] [2022-09-16 10:54:51,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 10:54:51,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 10:54:51,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:54:51,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 10:54:51,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 10:54:51,491 INFO L87 Difference]: Start difference. First operand 167198 states and 473043 transitions. Second operand has 12 states, 11 states have (on average 10.181818181818182) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:54:59,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:54:59,256 INFO L93 Difference]: Finished difference Result 835661 states and 2364881 transitions. [2022-09-16 10:54:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 10:54:59,258 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.181818181818182) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-09-16 10:54:59,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:55:04,547 INFO L225 Difference]: With dead ends: 835661 [2022-09-16 10:55:04,547 INFO L226 Difference]: Without dead ends: 835661 [2022-09-16 10:55:04,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2022-09-16 10:55:04,549 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 2306 mSDsluCounter, 4072 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 4574 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:55:04,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 4574 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:55:06,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835661 states. [2022-09-16 10:55:16,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835661 to 167224. [2022-09-16 10:55:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167224 states, 166078 states have (on average 2.8485049193752334) internal successors, (473074), 167223 states have internal predecessors, (473074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:55:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167224 states to 167224 states and 473074 transitions. [2022-09-16 10:55:17,384 INFO L78 Accepts]: Start accepts. Automaton has 167224 states and 473074 transitions. Word has length 87 [2022-09-16 10:55:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:55:17,384 INFO L495 AbstractCegarLoop]: Abstraction has 167224 states and 473074 transitions. [2022-09-16 10:55:17,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.181818181818182) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:55:17,385 INFO L276 IsEmpty]: Start isEmpty. Operand 167224 states and 473074 transitions. [2022-09-16 10:55:17,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-09-16 10:55:17,391 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:55:17,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:55:17,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 10:55:17,599 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 [2022-09-16 10:55:17,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:55:17,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:55:17,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1308172820, now seen corresponding path program 1 times [2022-09-16 10:55:17,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:55:17,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357960689] [2022-09-16 10:55:17,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:55:17,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:55:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:55:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:55:17,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:55:17,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357960689] [2022-09-16 10:55:17,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357960689] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:55:17,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666121888] [2022-09-16 10:55:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:55:17,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:55:17,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:55:17,696 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) [2022-09-16 10:55:17,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 10:55:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:55:17,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 10:55:17,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:55:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:55:17,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 10:55:17,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666121888] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:55:17,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 10:55:17,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 10:55:17,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064313757] [2022-09-16 10:55:17,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:55:17,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 10:55:17,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:55:17,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 10:55:17,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 10:55:17,874 INFO L87 Difference]: Start difference. First operand 167224 states and 473074 transitions. Second operand has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:55:20,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:55:20,424 INFO L93 Difference]: Finished difference Result 334331 states and 946022 transitions. [2022-09-16 10:55:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 10:55:20,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-09-16 10:55:20,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:55:22,568 INFO L225 Difference]: With dead ends: 334331 [2022-09-16 10:55:22,568 INFO L226 Difference]: Without dead ends: 334331 [2022-09-16 10:55:22,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 10:55:22,569 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 919 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 10:55:22,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 2545 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 10:55:23,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334331 states. [2022-09-16 10:55:28,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334331 to 167223. [2022-09-16 10:55:29,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167223 states, 166078 states have (on average 2.848486855573887) internal successors, (473071), 167222 states have internal predecessors, (473071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:55:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167223 states to 167223 states and 473071 transitions. [2022-09-16 10:55:30,750 INFO L78 Accepts]: Start accepts. Automaton has 167223 states and 473071 transitions. Word has length 88 [2022-09-16 10:55:30,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:55:30,752 INFO L495 AbstractCegarLoop]: Abstraction has 167223 states and 473071 transitions. [2022-09-16 10:55:30,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:55:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 167223 states and 473071 transitions. [2022-09-16 10:55:30,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-09-16 10:55:30,758 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:55:30,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:55:30,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 10:55:30,981 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 [2022-09-16 10:55:30,981 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:55:30,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:55:30,982 INFO L85 PathProgramCache]: Analyzing trace with hash 955751352, now seen corresponding path program 1 times [2022-09-16 10:55:30,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:55:30,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133952190] [2022-09-16 10:55:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:55:30,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:55:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:55:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:55:31,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:55:31,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133952190] [2022-09-16 10:55:31,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133952190] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:55:31,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:55:31,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 10:55:31,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289514762] [2022-09-16 10:55:31,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:55:31,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 10:55:31,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:55:31,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 10:55:31,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 10:55:31,126 INFO L87 Difference]: Start difference. First operand 167223 states and 473071 transitions. Second operand has 6 states, 5 states have (on average 19.6) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:55:35,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:55:35,882 INFO L93 Difference]: Finished difference Result 462911 states and 1306661 transitions. [2022-09-16 10:55:35,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 10:55:35,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-09-16 10:55:35,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:55:38,483 INFO L225 Difference]: With dead ends: 462911 [2022-09-16 10:55:38,483 INFO L226 Difference]: Without dead ends: 462911 [2022-09-16 10:55:38,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-09-16 10:55:38,484 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 2160 mSDsluCounter, 3221 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 4190 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 10:55:38,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2160 Valid, 4190 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-09-16 10:55:39,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462911 states. [2022-09-16 10:55:46,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462911 to 215721. [2022-09-16 10:55:46,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215721 states, 214576 states have (on average 2.8878858772649316) internal successors, (619671), 215720 states have internal predecessors, (619671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:55:48,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215721 states to 215721 states and 619671 transitions. [2022-09-16 10:55:48,314 INFO L78 Accepts]: Start accepts. Automaton has 215721 states and 619671 transitions. Word has length 98 [2022-09-16 10:55:48,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:55:48,315 INFO L495 AbstractCegarLoop]: Abstraction has 215721 states and 619671 transitions. [2022-09-16 10:55:48,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:55:48,315 INFO L276 IsEmpty]: Start isEmpty. Operand 215721 states and 619671 transitions. [2022-09-16 10:55:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-09-16 10:55:48,317 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:55:48,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:55:48,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 10:55:48,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:55:48,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:55:48,318 INFO L85 PathProgramCache]: Analyzing trace with hash -436477753, now seen corresponding path program 1 times [2022-09-16 10:55:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:55:48,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95972928] [2022-09-16 10:55:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:55:48,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:55:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:55:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:55:48,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:55:48,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95972928] [2022-09-16 10:55:48,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95972928] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:55:48,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:55:48,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:55:48,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681170259] [2022-09-16 10:55:48,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:55:48,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 10:55:48,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:55:48,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 10:55:48,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:55:48,367 INFO L87 Difference]: Start difference. First operand 215721 states and 619671 transitions. Second operand has 4 states, 3 states have (on average 33.0) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:55:51,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:55:51,362 INFO L93 Difference]: Finished difference Result 361442 states and 1033701 transitions. [2022-09-16 10:55:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 10:55:51,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 33.0) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-09-16 10:55:51,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:55:54,150 INFO L225 Difference]: With dead ends: 361442 [2022-09-16 10:55:54,150 INFO L226 Difference]: Without dead ends: 361442 [2022-09-16 10:55:54,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:55:54,159 INFO L413 NwaCegarLoop]: 1074 mSDtfsCounter, 787 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:55:54,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1736 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:55:55,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361442 states. [2022-09-16 10:56:02,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361442 to 252711. [2022-09-16 10:56:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252711 states, 251706 states have (on average 2.8996885255019746) internal successors, (729869), 252710 states have internal predecessors, (729869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:56:05,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252711 states to 252711 states and 729869 transitions. [2022-09-16 10:56:05,258 INFO L78 Accepts]: Start accepts. Automaton has 252711 states and 729869 transitions. Word has length 99 [2022-09-16 10:56:05,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:56:05,259 INFO L495 AbstractCegarLoop]: Abstraction has 252711 states and 729869 transitions. [2022-09-16 10:56:05,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 33.0) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:56:05,259 INFO L276 IsEmpty]: Start isEmpty. Operand 252711 states and 729869 transitions. [2022-09-16 10:56:05,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-09-16 10:56:05,267 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:56:05,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:56:05,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 10:56:05,267 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:56:05,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:56:05,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1577499575, now seen corresponding path program 1 times [2022-09-16 10:56:05,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:56:05,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667038624] [2022-09-16 10:56:05,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:56:05,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:56:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:56:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:56:05,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:56:05,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667038624] [2022-09-16 10:56:05,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667038624] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:56:05,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:56:05,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-16 10:56:05,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747276243] [2022-09-16 10:56:05,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:56:05,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 10:56:05,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:56:05,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 10:56:05,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-16 10:56:05,446 INFO L87 Difference]: Start difference. First operand 252711 states and 729869 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:56:08,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:56:08,127 INFO L93 Difference]: Finished difference Result 300215 states and 864310 transitions. [2022-09-16 10:56:08,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 10:56:08,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-09-16 10:56:08,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:56:09,343 INFO L225 Difference]: With dead ends: 300215 [2022-09-16 10:56:09,344 INFO L226 Difference]: Without dead ends: 300215 [2022-09-16 10:56:09,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-09-16 10:56:09,345 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 3802 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3802 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:56:09,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3802 Valid, 2895 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:56:10,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300215 states. [2022-09-16 10:56:16,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300215 to 253548. [2022-09-16 10:56:16,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253548 states, 252543 states have (on average 2.8992132032960725) internal successors, (732176), 253547 states have internal predecessors, (732176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:56:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253548 states to 253548 states and 732176 transitions. [2022-09-16 10:56:18,130 INFO L78 Accepts]: Start accepts. Automaton has 253548 states and 732176 transitions. Word has length 99 [2022-09-16 10:56:18,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:56:18,130 INFO L495 AbstractCegarLoop]: Abstraction has 253548 states and 732176 transitions. [2022-09-16 10:56:18,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:56:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 253548 states and 732176 transitions. [2022-09-16 10:56:18,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-09-16 10:56:18,133 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:56:18,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:56:18,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 10:56:18,133 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:56:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:56:18,133 INFO L85 PathProgramCache]: Analyzing trace with hash -994600474, now seen corresponding path program 1 times [2022-09-16 10:56:18,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:56:18,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492082262] [2022-09-16 10:56:18,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:56:18,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:56:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:56:18,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:56:18,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:56:18,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492082262] [2022-09-16 10:56:18,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492082262] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:56:18,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:56:18,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 10:56:18,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115891018] [2022-09-16 10:56:18,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:56:18,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 10:56:18,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:56:18,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 10:56:18,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 10:56:18,188 INFO L87 Difference]: Start difference. First operand 253548 states and 732176 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:56:26,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:56:26,919 INFO L93 Difference]: Finished difference Result 698555 states and 2015385 transitions. [2022-09-16 10:56:26,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 10:56:26,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-09-16 10:56:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:56:30,683 INFO L225 Difference]: With dead ends: 698555 [2022-09-16 10:56:30,684 INFO L226 Difference]: Without dead ends: 698555 [2022-09-16 10:56:30,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-09-16 10:56:30,685 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 2101 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 4113 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 10:56:30,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2101 Valid, 4113 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-09-16 10:56:32,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698555 states. [2022-09-16 10:56:43,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698555 to 326649. [2022-09-16 10:56:44,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326649 states, 325644 states have (on average 2.941331638230706) internal successors, (957827), 326648 states have internal predecessors, (957827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:56:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326649 states to 326649 states and 957827 transitions. [2022-09-16 10:56:46,355 INFO L78 Accepts]: Start accepts. Automaton has 326649 states and 957827 transitions. Word has length 104 [2022-09-16 10:56:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:56:46,356 INFO L495 AbstractCegarLoop]: Abstraction has 326649 states and 957827 transitions. [2022-09-16 10:56:46,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:56:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 326649 states and 957827 transitions. [2022-09-16 10:56:46,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-09-16 10:56:46,359 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:56:46,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:56:46,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 10:56:46,359 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:56:46,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:56:46,360 INFO L85 PathProgramCache]: Analyzing trace with hash -767841993, now seen corresponding path program 1 times [2022-09-16 10:56:46,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:56:46,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062650364] [2022-09-16 10:56:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:56:46,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:56:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:56:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:56:46,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:56:46,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062650364] [2022-09-16 10:56:46,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062650364] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:56:46,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:56:46,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:56:46,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634195485] [2022-09-16 10:56:46,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:56:46,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 10:56:46,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:56:46,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 10:56:46,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:56:46,418 INFO L87 Difference]: Start difference. First operand 326649 states and 957827 transitions. Second operand has 4 states, 3 states have (on average 35.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:56:51,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:56:51,748 INFO L93 Difference]: Finished difference Result 545984 states and 1595192 transitions. [2022-09-16 10:56:51,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 10:56:51,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 35.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-09-16 10:56:51,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:56:57,419 INFO L225 Difference]: With dead ends: 545984 [2022-09-16 10:56:57,421 INFO L226 Difference]: Without dead ends: 545984 [2022-09-16 10:56:57,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:56:57,424 INFO L413 NwaCegarLoop]: 1054 mSDtfsCounter, 767 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:56:57,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1705 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:56:59,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545984 states. [2022-09-16 10:57:10,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545984 to 382404. [2022-09-16 10:57:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382404 states, 381523 states have (on average 2.9555439645840487) internal successors, (1127608), 382403 states have internal predecessors, (1127608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:57:13,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382404 states to 382404 states and 1127608 transitions. [2022-09-16 10:57:13,949 INFO L78 Accepts]: Start accepts. Automaton has 382404 states and 1127608 transitions. Word has length 105 [2022-09-16 10:57:13,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:57:13,950 INFO L495 AbstractCegarLoop]: Abstraction has 382404 states and 1127608 transitions. [2022-09-16 10:57:13,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 35.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:57:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand 382404 states and 1127608 transitions. [2022-09-16 10:57:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-09-16 10:57:13,953 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:57:13,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:57:13,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 10:57:13,953 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:57:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:57:13,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1908863815, now seen corresponding path program 1 times [2022-09-16 10:57:13,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:57:13,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105691861] [2022-09-16 10:57:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:57:13,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:57:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:57:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:57:14,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:57:14,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105691861] [2022-09-16 10:57:14,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105691861] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:57:14,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:57:14,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-16 10:57:14,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541670148] [2022-09-16 10:57:14,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:57:14,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 10:57:14,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:57:14,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 10:57:14,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-16 10:57:14,036 INFO L87 Difference]: Start difference. First operand 382404 states and 1127608 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:57:18,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:57:18,450 INFO L93 Difference]: Finished difference Result 394627 states and 1162059 transitions. [2022-09-16 10:57:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 10:57:18,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-09-16 10:57:18,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:57:22,061 INFO L225 Difference]: With dead ends: 394627 [2022-09-16 10:57:22,062 INFO L226 Difference]: Without dead ends: 394627 [2022-09-16 10:57:22,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-09-16 10:57:22,064 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 2610 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2610 SdHoareTripleChecker+Valid, 3024 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 10:57:22,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2610 Valid, 3024 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 10:57:22,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394627 states. [2022-09-16 10:57:32,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394627 to 381977. [2022-09-16 10:57:34,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381977 states, 381096 states have (on average 2.954869639146042) internal successors, (1126089), 381976 states have internal predecessors, (1126089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:57:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381977 states to 381977 states and 1126089 transitions. [2022-09-16 10:57:36,359 INFO L78 Accepts]: Start accepts. Automaton has 381977 states and 1126089 transitions. Word has length 105 [2022-09-16 10:57:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:57:36,360 INFO L495 AbstractCegarLoop]: Abstraction has 381977 states and 1126089 transitions. [2022-09-16 10:57:36,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:57:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 381977 states and 1126089 transitions. [2022-09-16 10:57:36,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-09-16 10:57:36,362 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:57:36,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:57:36,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 10:57:36,362 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:57:36,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:57:36,363 INFO L85 PathProgramCache]: Analyzing trace with hash 653516789, now seen corresponding path program 1 times [2022-09-16 10:57:36,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:57:36,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360524067] [2022-09-16 10:57:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:57:36,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:57:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:57:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:57:36,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:57:36,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360524067] [2022-09-16 10:57:36,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360524067] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:57:36,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:57:36,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:57:36,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439406115] [2022-09-16 10:57:36,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:57:36,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 10:57:36,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:57:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 10:57:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:57:36,419 INFO L87 Difference]: Start difference. First operand 381977 states and 1126089 transitions. Second operand has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:57:43,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:57:43,017 INFO L93 Difference]: Finished difference Result 545333 states and 1585685 transitions. [2022-09-16 10:57:43,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 10:57:43,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-09-16 10:57:43,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:57:48,111 INFO L225 Difference]: With dead ends: 545333 [2022-09-16 10:57:48,111 INFO L226 Difference]: Without dead ends: 545333 [2022-09-16 10:57:48,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:57:48,112 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 783 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-09-16 10:57:48,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1560 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-09-16 10:57:49,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545333 states. [2022-09-16 10:57:59,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545333 to 381977. [2022-09-16 10:58:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381977 states, 381096 states have (on average 2.938600772508764) internal successors, (1119889), 381976 states have internal predecessors, (1119889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:58:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381977 states to 381977 states and 1119889 transitions. [2022-09-16 10:58:03,102 INFO L78 Accepts]: Start accepts. Automaton has 381977 states and 1119889 transitions. Word has length 107 [2022-09-16 10:58:03,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:58:03,102 INFO L495 AbstractCegarLoop]: Abstraction has 381977 states and 1119889 transitions. [2022-09-16 10:58:03,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:58:03,102 INFO L276 IsEmpty]: Start isEmpty. Operand 381977 states and 1119889 transitions. [2022-09-16 10:58:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-09-16 10:58:03,106 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:58:03,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:58:03,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 10:58:03,106 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:58:03,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:58:03,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1215814580, now seen corresponding path program 1 times [2022-09-16 10:58:03,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:58:03,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742636028] [2022-09-16 10:58:03,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:58:03,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:58:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:58:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:58:03,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:58:03,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742636028] [2022-09-16 10:58:03,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742636028] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:58:03,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:58:03,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 10:58:03,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960928643] [2022-09-16 10:58:03,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:58:03,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 10:58:03,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:58:03,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 10:58:03,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 10:58:03,168 INFO L87 Difference]: Start difference. First operand 381977 states and 1119889 transitions. Second operand has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:58:10,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:58:10,923 INFO L93 Difference]: Finished difference Result 599572 states and 1738892 transitions. [2022-09-16 10:58:10,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 10:58:10,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-09-16 10:58:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:58:15,385 INFO L225 Difference]: With dead ends: 599572 [2022-09-16 10:58:15,385 INFO L226 Difference]: Without dead ends: 599572 [2022-09-16 10:58:15,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-09-16 10:58:15,386 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 1938 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 3943 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 10:58:15,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1938 Valid, 3943 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 10:58:16,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599572 states. [2022-09-16 10:58:27,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599572 to 409203. [2022-09-16 10:58:28,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409203 states, 408322 states have (on average 2.9444849897874716) internal successors, (1202298), 409202 states have internal predecessors, (1202298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:58:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409203 states to 409203 states and 1202298 transitions. [2022-09-16 10:58:31,717 INFO L78 Accepts]: Start accepts. Automaton has 409203 states and 1202298 transitions. Word has length 108 [2022-09-16 10:58:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:58:31,718 INFO L495 AbstractCegarLoop]: Abstraction has 409203 states and 1202298 transitions. [2022-09-16 10:58:31,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.6) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:58:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 409203 states and 1202298 transitions. [2022-09-16 10:58:31,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-09-16 10:58:31,726 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:58:31,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:58:31,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 10:58:31,727 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:58:31,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:58:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash 847062338, now seen corresponding path program 1 times [2022-09-16 10:58:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:58:31,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993655908] [2022-09-16 10:58:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:58:31,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:58:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:58:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:58:32,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:58:32,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993655908] [2022-09-16 10:58:32,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993655908] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 10:58:32,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58422752] [2022-09-16 10:58:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:58:32,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:58:32,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 10:58:32,473 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) [2022-09-16 10:58:32,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 10:58:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:58:32,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 32 conjunts are in the unsatisfiable core [2022-09-16 10:58:32,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 10:58:32,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 10:58:33,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 10:58:33,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 10:58:33,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-09-16 10:58:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:58:33,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 10:58:33,305 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 9223372039002259456))) is different from false [2022-09-16 10:58:33,320 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 9223372039002259456))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) is different from false [2022-09-16 10:58:33,328 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 9223372039002259456))) (= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) is different from false [2022-09-16 10:58:33,343 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 10:58:33,352 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) |c_ULTIMATE.start_main_#t~ret26#1.base|) |c_ULTIMATE.start_main_#t~ret26#1.offset|) 9223372039002259456))) is different from false [2022-09-16 10:58:33,359 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) is different from false [2022-09-16 10:58:33,363 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_141 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_141) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-09-16 10:58:33,387 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 10:58:33,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-09-16 10:58:33,394 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 10:58:33,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-09-16 10:58:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 10:58:33,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58422752] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 10:58:33,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 10:58:33,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 17, 17] total 51 [2022-09-16 10:58:33,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492792799] [2022-09-16 10:58:33,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 10:58:33,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-09-16 10:58:33,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:58:33,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-09-16 10:58:33,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1845, Unknown=7, NotChecked=644, Total=2652 [2022-09-16 10:58:33,633 INFO L87 Difference]: Start difference. First operand 409203 states and 1202298 transitions. Second operand has 52 states, 51 states have (on average 4.745098039215686) internal successors, (242), 52 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:58:47,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:58:47,883 INFO L93 Difference]: Finished difference Result 833283 states and 2416154 transitions. [2022-09-16 10:58:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-09-16 10:58:47,884 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.745098039215686) internal successors, (242), 52 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-09-16 10:58:47,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:58:52,885 INFO L225 Difference]: With dead ends: 833283 [2022-09-16 10:58:52,885 INFO L226 Difference]: Without dead ends: 833283 [2022-09-16 10:58:52,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 186 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=949, Invalid=5392, Unknown=7, NotChecked=1134, Total=7482 [2022-09-16 10:58:52,887 INFO L413 NwaCegarLoop]: 1386 mSDtfsCounter, 11286 mSDsluCounter, 40072 mSDsCounter, 0 mSdLazyCounter, 4503 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11286 SdHoareTripleChecker+Valid, 41206 SdHoareTripleChecker+Invalid, 20552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 4503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15984 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-09-16 10:58:52,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11286 Valid, 41206 Invalid, 20552 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 4503 Invalid, 0 Unknown, 15984 Unchecked, 2.7s Time] [2022-09-16 10:58:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833283 states. [2022-09-16 10:59:09,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833283 to 420370. [2022-09-16 10:59:10,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420370 states, 419489 states have (on average 2.9448400315622103) internal successors, (1235328), 420369 states have internal predecessors, (1235328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:59:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420370 states to 420370 states and 1235328 transitions. [2022-09-16 10:59:15,584 INFO L78 Accepts]: Start accepts. Automaton has 420370 states and 1235328 transitions. Word has length 108 [2022-09-16 10:59:15,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:59:15,585 INFO L495 AbstractCegarLoop]: Abstraction has 420370 states and 1235328 transitions. [2022-09-16 10:59:15,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.745098039215686) internal successors, (242), 52 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:59:15,585 INFO L276 IsEmpty]: Start isEmpty. Operand 420370 states and 1235328 transitions. [2022-09-16 10:59:15,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-09-16 10:59:15,591 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:59:15,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:59:15,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 10:59:15,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 10:59:15,807 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:59:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:59:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1698144401, now seen corresponding path program 1 times [2022-09-16 10:59:15,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:59:15,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217373094] [2022-09-16 10:59:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:59:15,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:59:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:59:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:59:15,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:59:15,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217373094] [2022-09-16 10:59:15,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217373094] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:59:15,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:59:15,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:59:15,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427635563] [2022-09-16 10:59:15,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:59:15,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 10:59:15,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:59:15,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 10:59:15,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:59:15,876 INFO L87 Difference]: Start difference. First operand 420370 states and 1235328 transitions. Second operand has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:59:23,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:59:23,612 INFO L93 Difference]: Finished difference Result 574074 states and 1678404 transitions. [2022-09-16 10:59:23,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 10:59:23,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-09-16 10:59:23,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 10:59:28,522 INFO L225 Difference]: With dead ends: 574074 [2022-09-16 10:59:28,523 INFO L226 Difference]: Without dead ends: 573802 [2022-09-16 10:59:28,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:59:28,523 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 593 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-09-16 10:59:28,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 2089 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-09-16 10:59:30,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573802 states. [2022-09-16 10:59:45,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573802 to 415136. [2022-09-16 10:59:46,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415136 states, 414291 states have (on average 2.945429661759488) internal successors, (1220265), 415135 states have internal predecessors, (1220265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:59:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415136 states to 415136 states and 1220265 transitions. [2022-09-16 10:59:49,420 INFO L78 Accepts]: Start accepts. Automaton has 415136 states and 1220265 transitions. Word has length 110 [2022-09-16 10:59:49,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 10:59:49,421 INFO L495 AbstractCegarLoop]: Abstraction has 415136 states and 1220265 transitions. [2022-09-16 10:59:49,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:59:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 415136 states and 1220265 transitions. [2022-09-16 10:59:49,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-09-16 10:59:49,427 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 10:59:49,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 10:59:49,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 10:59:49,428 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 10:59:49,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 10:59:49,429 INFO L85 PathProgramCache]: Analyzing trace with hash 893192037, now seen corresponding path program 1 times [2022-09-16 10:59:49,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 10:59:49,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314469682] [2022-09-16 10:59:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 10:59:49,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 10:59:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 10:59:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 10:59:49,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 10:59:49,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314469682] [2022-09-16 10:59:49,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314469682] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 10:59:49,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 10:59:49,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 10:59:49,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200231105] [2022-09-16 10:59:49,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 10:59:49,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 10:59:49,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 10:59:49,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 10:59:49,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 10:59:49,460 INFO L87 Difference]: Start difference. First operand 415136 states and 1220265 transitions. Second operand has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 10:59:57,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 10:59:57,250 INFO L93 Difference]: Finished difference Result 591021 states and 1714783 transitions. [2022-09-16 10:59:57,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 10:59:57,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-09-16 10:59:57,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:00:01,040 INFO L225 Difference]: With dead ends: 591021 [2022-09-16 11:00:01,040 INFO L226 Difference]: Without dead ends: 591021 [2022-09-16 11:00:01,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:00:01,041 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 604 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:00:01,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1972 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:00:02,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591021 states. [2022-09-16 11:00:14,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591021 to 415136. [2022-09-16 11:00:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415136 states, 414291 states have (on average 2.929211592817609) internal successors, (1213546), 415135 states have internal predecessors, (1213546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:00:19,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415136 states to 415136 states and 1213546 transitions. [2022-09-16 11:00:19,532 INFO L78 Accepts]: Start accepts. Automaton has 415136 states and 1213546 transitions. Word has length 113 [2022-09-16 11:00:19,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:00:19,533 INFO L495 AbstractCegarLoop]: Abstraction has 415136 states and 1213546 transitions. [2022-09-16 11:00:19,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:00:19,533 INFO L276 IsEmpty]: Start isEmpty. Operand 415136 states and 1213546 transitions. [2022-09-16 11:00:19,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-09-16 11:00:19,541 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:00:19,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:00:19,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:00:19,541 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:00:19,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:00:19,542 INFO L85 PathProgramCache]: Analyzing trace with hash -694402047, now seen corresponding path program 1 times [2022-09-16 11:00:19,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:00:19,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618491464] [2022-09-16 11:00:19,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:00:19,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:00:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:00:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:00:20,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:00:20,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618491464] [2022-09-16 11:00:20,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618491464] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:00:20,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726419312] [2022-09-16 11:00:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:00:20,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:00:20,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:00:20,421 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) [2022-09-16 11:00:20,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:00:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:00:20,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 34 conjunts are in the unsatisfiable core [2022-09-16 11:00:20,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:00:20,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 11:00:21,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:00:21,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:00:21,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:00:21,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:00:21,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-09-16 11:00:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:00:21,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:00:21,597 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_187 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_187) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 9223372039002259456))) is different from false [2022-09-16 11:00:21,618 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_186 (Array Int Int)) (v_ArrVal_187 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_186) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_187) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 9223372039002259456))) is different from false [2022-09-16 11:00:21,634 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_186 (Array Int Int)) (v_ArrVal_187 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_186) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_187) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 9223372039002259456))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) is different from false [2022-09-16 11:00:21,641 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_186 (Array Int Int)) (v_ArrVal_187 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_186) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_187) c_~A~0.base) (+ c_~A~0.offset (* c_~i~0 4))) 9223372039002259456))) (= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) is different from false [2022-09-16 11:00:21,673 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_186 (Array Int Int)) (v_ArrVal_187 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_186) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_187) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:00:21,685 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_186 (Array Int Int)) (v_ArrVal_187 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_186) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_187) |c_ULTIMATE.start_main_#t~ret26#1.base|) |c_ULTIMATE.start_main_#t~ret26#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:00:21,730 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_186 (Array Int Int)) (v_ArrVal_187 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_186) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_187) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:00:21,737 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_186 (Array Int Int)) (v_ArrVal_187 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_186) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_187) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:00:21,767 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:00:21,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-09-16 11:00:21,777 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:00:21,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 70 [2022-09-16 11:00:21,794 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-09-16 11:00:21,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2022-09-16 11:00:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:00:22,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726419312] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:00:22,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:00:22,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 19, 19] total 57 [2022-09-16 11:00:22,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257895949] [2022-09-16 11:00:22,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:00:22,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-09-16 11:00:22,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:00:22,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-09-16 11:00:22,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2292, Unknown=8, NotChecked=824, Total=3306 [2022-09-16 11:00:22,262 INFO L87 Difference]: Start difference. First operand 415136 states and 1213546 transitions. Second operand has 58 states, 57 states have (on average 5.0) internal successors, (285), 58 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:00:53,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:00:53,760 INFO L93 Difference]: Finished difference Result 1775789 states and 5090006 transitions. [2022-09-16 11:00:53,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-09-16 11:00:53,768 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 5.0) internal successors, (285), 58 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-09-16 11:00:53,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:01:07,039 INFO L225 Difference]: With dead ends: 1775789 [2022-09-16 11:01:07,039 INFO L226 Difference]: Without dead ends: 1775789 [2022-09-16 11:01:07,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 192 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1084, Invalid=5746, Unknown=8, NotChecked=1352, Total=8190 [2022-09-16 11:01:07,043 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 20560 mSDsluCounter, 35076 mSDsCounter, 0 mSdLazyCounter, 4017 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20560 SdHoareTripleChecker+Valid, 36246 SdHoareTripleChecker+Invalid, 24888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 4017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20765 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-09-16 11:01:07,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20560 Valid, 36246 Invalid, 24888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 4017 Invalid, 0 Unknown, 20765 Unchecked, 2.7s Time] [2022-09-16 11:01:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775789 states. [2022-09-16 11:01:43,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775789 to 417602. [2022-09-16 11:01:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417602 states, 416757 states have (on average 2.931624423824915) internal successors, (1221775), 417601 states have internal predecessors, (1221775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:01:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417602 states to 417602 states and 1221775 transitions. [2022-09-16 11:01:50,209 INFO L78 Accepts]: Start accepts. Automaton has 417602 states and 1221775 transitions. Word has length 113 [2022-09-16 11:01:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:01:50,210 INFO L495 AbstractCegarLoop]: Abstraction has 417602 states and 1221775 transitions. [2022-09-16 11:01:50,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 5.0) internal successors, (285), 58 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:01:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 417602 states and 1221775 transitions. [2022-09-16 11:01:50,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-09-16 11:01:50,218 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:01:50,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:01:50,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:01:50,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:01:50,431 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err20ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err21ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 105 more)] === [2022-09-16 11:01:50,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:01:50,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1919151034, now seen corresponding path program 1 times [2022-09-16 11:01:50,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:01:50,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588675976] [2022-09-16 11:01:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:01:50,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:01:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:01:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:01:50,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:01:50,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588675976] [2022-09-16 11:01:50,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588675976] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:01:50,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:01:50,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:01:50,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252764161] [2022-09-16 11:01:50,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:01:50,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:01:50,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:01:50,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:01:50,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:01:50,516 INFO L87 Difference]: Start difference. First operand 417602 states and 1221775 transitions. Second operand has 6 states, 5 states have (on average 22.8) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)