/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/popl20-more-min-array.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:08:23,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:08:23,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:08:23,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:08:23,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:08:23,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:08:23,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:08:23,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:08:23,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:08:23,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:08:23,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:08:23,149 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:08:23,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:08:23,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:08:23,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:08:23,162 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:08:23,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:08:23,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:08:23,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:08:23,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:08:23,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:08:23,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:08:23,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:08:23,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:08:23,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-16 11:08:23,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:08:23,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:08:23,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:08:23,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:08:23,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:08:23,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:08:23,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:08:23,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:08:23,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:08:23,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:08:23,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:08:23,192 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 11:08:23,222 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:08:23,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:08:23,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:08:23,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:08:23,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:08:23,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:08:23,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:08:23,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:08:23,225 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:08:23,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:08:23,225 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:08:23,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:08:23,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:08:23,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:08:23,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:08:23,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:08:23,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:08:23,226 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:08:23,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:08:23,227 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:08:23,227 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:08:23,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:08:23,227 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:08:23,227 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:08:23,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:08:23,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:08:23,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:08:23,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:08:23,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:08:23,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:08:23,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:08:23,229 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:08:23,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:08:23,229 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:08:23,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:08:23,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:08:23,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:08:23,475 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:08:23,478 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:08:23,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2022-09-16 11:08:23,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a8853d86/3ed70b350dac468eb0e626d44bbceeaa/FLAG745d0e434 [2022-09-16 11:08:23,919 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:08:23,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2022-09-16 11:08:23,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a8853d86/3ed70b350dac468eb0e626d44bbceeaa/FLAG745d0e434 [2022-09-16 11:08:23,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a8853d86/3ed70b350dac468eb0e626d44bbceeaa [2022-09-16 11:08:23,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:08:23,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:08:23,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:08:23,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:08:23,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:08:23,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:08:23" (1/1) ... [2022-09-16 11:08:23,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e7da36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:08:23, skipping insertion in model container [2022-09-16 11:08:23,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:08:23" (1/1) ... [2022-09-16 11:08:23,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:08:23,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:08:24,159 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/popl20-more-min-array.wvr.c[2553,2566] [2022-09-16 11:08:24,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:08:24,172 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:08:24,189 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/popl20-more-min-array.wvr.c[2553,2566] [2022-09-16 11:08:24,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:08:24,203 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:08:24,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:08:24 WrapperNode [2022-09-16 11:08:24,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:08:24,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:08:24,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:08:24,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:08:24,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:08:24" (1/1) ... [2022-09-16 11:08:24,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:08:24" (1/1) ... [2022-09-16 11:08:24,258 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 103 [2022-09-16 11:08:24,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:08:24,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:08:24,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:08:24,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:08:24,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:08:24" (1/1) ... [2022-09-16 11:08:24,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:08:24" (1/1) ... [2022-09-16 11:08:24,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:08:24" (1/1) ... [2022-09-16 11:08:24,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:08:24" (1/1) ... [2022-09-16 11:08:24,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:08:24" (1/1) ... [2022-09-16 11:08:24,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:08:24" (1/1) ... [2022-09-16 11:08:24,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:08:24" (1/1) ... [2022-09-16 11:08:24,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:08:24,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:08:24,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:08:24,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:08:24,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:08:24" (1/1) ... [2022-09-16 11:08:24,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:08:24,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:24,325 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 11:08:24,354 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 11:08:24,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:08:24,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:08:24,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:08:24,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:08:24,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:08:24,368 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:08:24,368 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:08:24,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:08:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:08:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:08:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:08:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:08:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:08:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:08:24,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:08:24,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:08:24,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:08:24,371 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 11:08:24,445 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:08:24,446 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:08:24,747 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:08:24,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:08:24,812 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:08:24,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:08:24 BoogieIcfgContainer [2022-09-16 11:08:24,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:08:24,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:08:24,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:08:24,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:08:24,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:08:23" (1/3) ... [2022-09-16 11:08:24,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e3a4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:08:24, skipping insertion in model container [2022-09-16 11:08:24,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:08:24" (2/3) ... [2022-09-16 11:08:24,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e3a4ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:08:24, skipping insertion in model container [2022-09-16 11:08:24,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:08:24" (3/3) ... [2022-09-16 11:08:24,822 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2022-09-16 11:08:24,831 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:08:24,840 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:08:24,840 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 11:08:24,841 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:08:24,956 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:08:25,007 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 166 places, 168 transitions, 360 flow [2022-09-16 11:08:25,542 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 10358 states, 10330 states have (on average 3.8210067763794773) internal successors, (39471), 10357 states have internal predecessors, (39471), 0 states have call successors, (0), 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 11:08:25,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:08:25,568 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;@2fde7b04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:08:25,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-09-16 11:08:25,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 10358 states, 10330 states have (on average 3.8210067763794773) internal successors, (39471), 10357 states have internal predecessors, (39471), 0 states have call successors, (0), 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 11:08:25,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-09-16 11:08:25,661 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:25,662 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] [2022-09-16 11:08:25,663 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:08:25,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:25,667 INFO L85 PathProgramCache]: Analyzing trace with hash 47761478, now seen corresponding path program 1 times [2022-09-16 11:08:25,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:25,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777281685] [2022-09-16 11:08:25,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:25,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:25,937 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 11:08:25,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:25,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777281685] [2022-09-16 11:08:25,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777281685] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:25,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:08:25,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:08:25,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014080429] [2022-09-16 11:08:25,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:25,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:08:25,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:25,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:08:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:08:26,006 INFO L87 Difference]: Start difference. First operand has 10358 states, 10330 states have (on average 3.8210067763794773) internal successors, (39471), 10357 states have internal predecessors, (39471), 0 states have call successors, (0), 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 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 11:08:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:26,570 INFO L93 Difference]: Finished difference Result 20665 states and 74599 transitions. [2022-09-16 11:08:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:08:26,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-09-16 11:08:26,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:26,877 INFO L225 Difference]: With dead ends: 20665 [2022-09-16 11:08:26,878 INFO L226 Difference]: Without dead ends: 20661 [2022-09-16 11:08:26,883 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 11:08:26,891 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 82 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:26,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 362 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:08:26,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20661 states. [2022-09-16 11:08:27,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20661 to 10362. [2022-09-16 11:08:27,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10362 states, 10334 states have (on average 3.6123475904780338) internal successors, (37330), 10361 states have internal predecessors, (37330), 0 states have call successors, (0), 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 11:08:27,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10362 states to 10362 states and 37330 transitions. [2022-09-16 11:08:27,625 INFO L78 Accepts]: Start accepts. Automaton has 10362 states and 37330 transitions. Word has length 53 [2022-09-16 11:08:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:27,627 INFO L495 AbstractCegarLoop]: Abstraction has 10362 states and 37330 transitions. [2022-09-16 11:08:27,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 11:08:27,628 INFO L276 IsEmpty]: Start isEmpty. Operand 10362 states and 37330 transitions. [2022-09-16 11:08:27,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-09-16 11:08:27,632 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:27,632 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] [2022-09-16 11:08:27,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:08:27,633 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:08:27,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:27,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1591896996, now seen corresponding path program 1 times [2022-09-16 11:08:27,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:27,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751777444] [2022-09-16 11:08:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:27,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:27,783 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 11:08:27,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:27,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751777444] [2022-09-16 11:08:27,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751777444] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:08:27,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532512895] [2022-09-16 11:08:27,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:27,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:27,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:27,787 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 11:08:27,789 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 11:08:27,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:27,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:08:27,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:08:27,988 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 11:08:27,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:08:28,041 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 11:08:28,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532512895] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:08:28,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:08:28,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:08:28,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95328392] [2022-09-16 11:08:28,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:08:28,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:08:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:28,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:08:28,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:08:28,045 INFO L87 Difference]: Start difference. First operand 10362 states and 37330 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 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 11:08:29,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:29,431 INFO L93 Difference]: Finished difference Result 51581 states and 186416 transitions. [2022-09-16 11:08:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:08:29,432 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 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 62 [2022-09-16 11:08:29,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:29,930 INFO L225 Difference]: With dead ends: 51581 [2022-09-16 11:08:29,931 INFO L226 Difference]: Without dead ends: 51581 [2022-09-16 11:08:29,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 117 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 11:08:29,933 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 412 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:29,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 928 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:08:30,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51581 states. [2022-09-16 11:08:31,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51581 to 10388. [2022-09-16 11:08:31,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10388 states, 10360 states have (on average 3.606274131274131) internal successors, (37361), 10387 states have internal predecessors, (37361), 0 states have call successors, (0), 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 11:08:31,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10388 states to 10388 states and 37361 transitions. [2022-09-16 11:08:31,115 INFO L78 Accepts]: Start accepts. Automaton has 10388 states and 37361 transitions. Word has length 62 [2022-09-16 11:08:31,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:31,115 INFO L495 AbstractCegarLoop]: Abstraction has 10388 states and 37361 transitions. [2022-09-16 11:08:31,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 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 11:08:31,116 INFO L276 IsEmpty]: Start isEmpty. Operand 10388 states and 37361 transitions. [2022-09-16 11:08:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-09-16 11:08:31,117 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:31,117 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] [2022-09-16 11:08:31,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:08:31,341 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 11:08:31,342 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:08:31,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:31,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2104166939, now seen corresponding path program 1 times [2022-09-16 11:08:31,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:31,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145824824] [2022-09-16 11:08:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:31,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:31,435 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 11:08:31,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:31,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145824824] [2022-09-16 11:08:31,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145824824] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:08:31,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834013255] [2022-09-16 11:08:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:31,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:31,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:31,440 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 11:08:31,442 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 11:08:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:31,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:08:31,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:08:31,713 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 11:08:31,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:08:31,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834013255] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:31,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:08:31,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:08:31,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825018185] [2022-09-16 11:08:31,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:31,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:08:31,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:31,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:08:31,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:08:31,716 INFO L87 Difference]: Start difference. First operand 10388 states and 37361 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 11:08:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:31,975 INFO L93 Difference]: Finished difference Result 20684 states and 74621 transitions. [2022-09-16 11:08:31,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:08:31,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-09-16 11:08:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:32,266 INFO L225 Difference]: With dead ends: 20684 [2022-09-16 11:08:32,267 INFO L226 Difference]: Without dead ends: 20684 [2022-09-16 11:08:32,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:08:32,268 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 163 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:32,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 669 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:08:32,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20684 states. [2022-09-16 11:08:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20684 to 10387. [2022-09-16 11:08:32,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10387 states, 10360 states have (on average 3.605984555984556) internal successors, (37358), 10386 states have internal predecessors, (37358), 0 states have call successors, (0), 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 11:08:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10387 states to 10387 states and 37358 transitions. [2022-09-16 11:08:32,810 INFO L78 Accepts]: Start accepts. Automaton has 10387 states and 37358 transitions. Word has length 63 [2022-09-16 11:08:32,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:32,811 INFO L495 AbstractCegarLoop]: Abstraction has 10387 states and 37358 transitions. [2022-09-16 11:08:32,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 11:08:32,811 INFO L276 IsEmpty]: Start isEmpty. Operand 10387 states and 37358 transitions. [2022-09-16 11:08:32,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-09-16 11:08:32,812 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:32,813 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] [2022-09-16 11:08:32,830 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 11:08:33,013 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 11:08:33,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:08:33,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:33,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2119274129, now seen corresponding path program 1 times [2022-09-16 11:08:33,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:33,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395867170] [2022-09-16 11:08:33,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:33,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:33,067 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 11:08:33,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:33,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395867170] [2022-09-16 11:08:33,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395867170] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:33,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:08:33,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:08:33,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925837441] [2022-09-16 11:08:33,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:33,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:08:33,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:33,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:08:33,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:08:33,070 INFO L87 Difference]: Start difference. First operand 10387 states and 37358 transitions. Second operand has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 11:08:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:33,388 INFO L93 Difference]: Finished difference Result 18389 states and 66263 transitions. [2022-09-16 11:08:33,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:08:33,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-09-16 11:08:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:33,536 INFO L225 Difference]: With dead ends: 18389 [2022-09-16 11:08:33,537 INFO L226 Difference]: Without dead ends: 18389 [2022-09-16 11:08:33,537 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 11:08:33,538 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 137 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:33,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 503 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:08:33,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18389 states. [2022-09-16 11:08:34,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18389 to 14187. [2022-09-16 11:08:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14187 states, 14160 states have (on average 3.671398305084746) internal successors, (51987), 14186 states have internal predecessors, (51987), 0 states have call successors, (0), 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 11:08:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14187 states to 14187 states and 51987 transitions. [2022-09-16 11:08:34,132 INFO L78 Accepts]: Start accepts. Automaton has 14187 states and 51987 transitions. Word has length 68 [2022-09-16 11:08:34,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:34,133 INFO L495 AbstractCegarLoop]: Abstraction has 14187 states and 51987 transitions. [2022-09-16 11:08:34,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 11:08:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 14187 states and 51987 transitions. [2022-09-16 11:08:34,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-09-16 11:08:34,135 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:34,136 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] [2022-09-16 11:08:34,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:08:34,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:08:34,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:34,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1191670954, now seen corresponding path program 1 times [2022-09-16 11:08:34,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:34,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441128892] [2022-09-16 11:08:34,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:34,187 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 11:08:34,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:34,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441128892] [2022-09-16 11:08:34,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441128892] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:34,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:08:34,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:08:34,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918056614] [2022-09-16 11:08:34,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:34,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:08:34,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:34,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:08:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:08:34,191 INFO L87 Difference]: Start difference. First operand 14187 states and 51987 transitions. Second operand has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 11:08:34,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:34,568 INFO L93 Difference]: Finished difference Result 24912 states and 91615 transitions. [2022-09-16 11:08:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:08:34,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-09-16 11:08:34,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:34,735 INFO L225 Difference]: With dead ends: 24912 [2022-09-16 11:08:34,735 INFO L226 Difference]: Without dead ends: 24912 [2022-09-16 11:08:34,735 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 11:08:34,737 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 125 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:34,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 491 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:08:34,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24912 states. [2022-09-16 11:08:35,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24912 to 19602. [2022-09-16 11:08:35,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19602 states, 19575 states have (on average 3.732822477650064) internal successors, (73070), 19601 states have internal predecessors, (73070), 0 states have call successors, (0), 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 11:08:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19602 states to 19602 states and 73070 transitions. [2022-09-16 11:08:35,500 INFO L78 Accepts]: Start accepts. Automaton has 19602 states and 73070 transitions. Word has length 74 [2022-09-16 11:08:35,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:35,501 INFO L495 AbstractCegarLoop]: Abstraction has 19602 states and 73070 transitions. [2022-09-16 11:08:35,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 11:08:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 19602 states and 73070 transitions. [2022-09-16 11:08:35,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-09-16 11:08:35,503 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:35,503 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:08:35,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:08:35,504 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:08:35,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:35,504 INFO L85 PathProgramCache]: Analyzing trace with hash -840761546, now seen corresponding path program 1 times [2022-09-16 11:08:35,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:35,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780654058] [2022-09-16 11:08:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:35,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:08:35,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:35,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780654058] [2022-09-16 11:08:35,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780654058] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:08:35,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267047942] [2022-09-16 11:08:35,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:35,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:35,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:35,755 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 11:08:35,756 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 11:08:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:35,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:08:35,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:08:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:08:35,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:08:35,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267047942] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:35,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:08:35,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:08:35,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355995405] [2022-09-16 11:08:35,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:35,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:08:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:08:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:08:35,922 INFO L87 Difference]: Start difference. First operand 19602 states and 73070 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 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 11:08:36,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:36,275 INFO L93 Difference]: Finished difference Result 25464 states and 93229 transitions. [2022-09-16 11:08:36,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:08:36,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 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 75 [2022-09-16 11:08:36,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:36,438 INFO L225 Difference]: With dead ends: 25464 [2022-09-16 11:08:36,438 INFO L226 Difference]: Without dead ends: 25392 [2022-09-16 11:08:36,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:08:36,439 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 443 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:36,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 508 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:08:36,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25392 states. [2022-09-16 11:08:37,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25392 to 21645. [2022-09-16 11:08:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21645 states, 21618 states have (on average 3.7283282449810344) internal successors, (80599), 21644 states have internal predecessors, (80599), 0 states have call successors, (0), 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 11:08:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21645 states to 21645 states and 80599 transitions. [2022-09-16 11:08:37,359 INFO L78 Accepts]: Start accepts. Automaton has 21645 states and 80599 transitions. Word has length 75 [2022-09-16 11:08:37,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:37,359 INFO L495 AbstractCegarLoop]: Abstraction has 21645 states and 80599 transitions. [2022-09-16 11:08:37,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 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 11:08:37,359 INFO L276 IsEmpty]: Start isEmpty. Operand 21645 states and 80599 transitions. [2022-09-16 11:08:37,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-09-16 11:08:37,362 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:37,363 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] [2022-09-16 11:08:37,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:08:37,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:37,584 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:08:37,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:37,584 INFO L85 PathProgramCache]: Analyzing trace with hash -797744630, now seen corresponding path program 1 times [2022-09-16 11:08:37,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:37,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433353773] [2022-09-16 11:08:37,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:37,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:37,652 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 11:08:37,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:37,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433353773] [2022-09-16 11:08:37,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433353773] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:37,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:08:37,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:08:37,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365509382] [2022-09-16 11:08:37,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:37,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:08:37,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:37,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:08:37,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:08:37,655 INFO L87 Difference]: Start difference. First operand 21645 states and 80599 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 11:08:38,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:38,021 INFO L93 Difference]: Finished difference Result 24975 states and 91502 transitions. [2022-09-16 11:08:38,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:08:38,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-09-16 11:08:38,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:38,371 INFO L225 Difference]: With dead ends: 24975 [2022-09-16 11:08:38,371 INFO L226 Difference]: Without dead ends: 24975 [2022-09-16 11:08:38,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:08:38,373 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 575 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:38,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 710 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:08:38,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24975 states. [2022-09-16 11:08:38,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24975 to 24027. [2022-09-16 11:08:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24027 states, 24000 states have (on average 3.701208333333333) internal successors, (88829), 24026 states have internal predecessors, (88829), 0 states have call successors, (0), 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 11:08:39,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24027 states to 24027 states and 88829 transitions. [2022-09-16 11:08:39,121 INFO L78 Accepts]: Start accepts. Automaton has 24027 states and 88829 transitions. Word has length 80 [2022-09-16 11:08:39,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:39,121 INFO L495 AbstractCegarLoop]: Abstraction has 24027 states and 88829 transitions. [2022-09-16 11:08:39,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 11:08:39,122 INFO L276 IsEmpty]: Start isEmpty. Operand 24027 states and 88829 transitions. [2022-09-16 11:08:39,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-09-16 11:08:39,124 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:39,124 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] [2022-09-16 11:08:39,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:08:39,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:08:39,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:39,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1039720754, now seen corresponding path program 1 times [2022-09-16 11:08:39,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:39,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726359475] [2022-09-16 11:08:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:39,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:39,179 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 11:08:39,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:39,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726359475] [2022-09-16 11:08:39,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726359475] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:39,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:08:39,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:08:39,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990340207] [2022-09-16 11:08:39,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:39,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:08:39,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:39,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:08:39,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:08:39,181 INFO L87 Difference]: Start difference. First operand 24027 states and 88829 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 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 11:08:39,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:39,393 INFO L93 Difference]: Finished difference Result 22530 states and 82833 transitions. [2022-09-16 11:08:39,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:08:39,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-09-16 11:08:39,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:39,700 INFO L225 Difference]: With dead ends: 22530 [2022-09-16 11:08:39,700 INFO L226 Difference]: Without dead ends: 21864 [2022-09-16 11:08:39,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:08:39,701 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 145 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:39,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 597 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:08:39,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21864 states. [2022-09-16 11:08:40,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21864 to 21864. [2022-09-16 11:08:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21864 states, 21846 states have (on average 3.6802618328298085) internal successors, (80399), 21863 states have internal predecessors, (80399), 0 states have call successors, (0), 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 11:08:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21864 states to 21864 states and 80399 transitions. [2022-09-16 11:08:40,358 INFO L78 Accepts]: Start accepts. Automaton has 21864 states and 80399 transitions. Word has length 81 [2022-09-16 11:08:40,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:40,359 INFO L495 AbstractCegarLoop]: Abstraction has 21864 states and 80399 transitions. [2022-09-16 11:08:40,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 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 11:08:40,359 INFO L276 IsEmpty]: Start isEmpty. Operand 21864 states and 80399 transitions. [2022-09-16 11:08:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-09-16 11:08:40,362 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:40,362 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:08:40,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:08:40,362 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:08:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:40,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1810045335, now seen corresponding path program 1 times [2022-09-16 11:08:40,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:40,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485025956] [2022-09-16 11:08:40,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:40,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:08:40,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:40,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485025956] [2022-09-16 11:08:40,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485025956] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:08:40,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322884618] [2022-09-16 11:08:40,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:40,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:40,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:40,441 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 11:08:40,442 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 11:08:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:40,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:08:40,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:08:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:08:40,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:08:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:08:40,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322884618] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:08:40,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:08:40,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:08:40,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296969683] [2022-09-16 11:08:40,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:08:40,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:08:40,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:40,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:08:40,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:08:40,622 INFO L87 Difference]: Start difference. First operand 21864 states and 80399 transitions. Second operand has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 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 11:08:41,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:41,521 INFO L93 Difference]: Finished difference Result 64678 states and 236151 transitions. [2022-09-16 11:08:41,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:08:41,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 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 81 [2022-09-16 11:08:41,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:41,844 INFO L225 Difference]: With dead ends: 64678 [2022-09-16 11:08:41,844 INFO L226 Difference]: Without dead ends: 64678 [2022-09-16 11:08:41,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 155 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 11:08:41,845 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 1039 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:41,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1304 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:08:41,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64678 states. [2022-09-16 11:08:43,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64678 to 46784. [2022-09-16 11:08:43,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46784 states, 46766 states have (on average 3.7822349570200573) internal successors, (176880), 46783 states have internal predecessors, (176880), 0 states have call successors, (0), 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 11:08:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46784 states to 46784 states and 176880 transitions. [2022-09-16 11:08:43,766 INFO L78 Accepts]: Start accepts. Automaton has 46784 states and 176880 transitions. Word has length 81 [2022-09-16 11:08:43,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:43,766 INFO L495 AbstractCegarLoop]: Abstraction has 46784 states and 176880 transitions. [2022-09-16 11:08:43,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 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 11:08:43,767 INFO L276 IsEmpty]: Start isEmpty. Operand 46784 states and 176880 transitions. [2022-09-16 11:08:43,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-09-16 11:08:43,769 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:43,769 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:08:43,786 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 11:08:43,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:43,970 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:08:43,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:43,971 INFO L85 PathProgramCache]: Analyzing trace with hash -276830043, now seen corresponding path program 1 times [2022-09-16 11:08:43,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:43,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156470849] [2022-09-16 11:08:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:43,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:08:44,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:44,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156470849] [2022-09-16 11:08:44,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156470849] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:08:44,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539786362] [2022-09-16 11:08:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:44,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:44,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:44,017 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:08:44,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:08:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:44,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:08:44,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:08:44,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:08:44,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:08:44,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539786362] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:44,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:08:44,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:08:44,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518375237] [2022-09-16 11:08:44,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:44,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:08:44,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:44,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:08:44,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:08:44,122 INFO L87 Difference]: Start difference. First operand 46784 states and 176880 transitions. Second operand has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 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 11:08:44,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:44,934 INFO L93 Difference]: Finished difference Result 48454 states and 179580 transitions. [2022-09-16 11:08:44,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:08:44,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-09-16 11:08:44,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:45,174 INFO L225 Difference]: With dead ends: 48454 [2022-09-16 11:08:45,174 INFO L226 Difference]: Without dead ends: 48454 [2022-09-16 11:08:45,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:08:45,176 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 207 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:45,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 946 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:08:45,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48454 states. [2022-09-16 11:08:46,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48454 to 45538. [2022-09-16 11:08:46,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45538 states, 45526 states have (on average 3.7304617141853007) internal successors, (169833), 45537 states have internal predecessors, (169833), 0 states have call successors, (0), 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 11:08:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45538 states to 45538 states and 169833 transitions. [2022-09-16 11:08:46,640 INFO L78 Accepts]: Start accepts. Automaton has 45538 states and 169833 transitions. Word has length 82 [2022-09-16 11:08:46,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:46,640 INFO L495 AbstractCegarLoop]: Abstraction has 45538 states and 169833 transitions. [2022-09-16 11:08:46,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.4) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 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 11:08:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand 45538 states and 169833 transitions. [2022-09-16 11:08:46,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-09-16 11:08:46,646 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:46,646 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2022-09-16 11:08:46,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:08:46,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-09-16 11:08:46,860 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:08:46,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:46,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1610000404, now seen corresponding path program 1 times [2022-09-16 11:08:46,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:46,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193609589] [2022-09-16 11:08:46,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:46,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:08:46,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:46,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193609589] [2022-09-16 11:08:46,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193609589] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:08:46,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058849406] [2022-09-16 11:08:46,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:46,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:46,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:46,916 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:08:46,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:08:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:46,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:08:46,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:08:47,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:08:47,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:08:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:08:47,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058849406] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:08:47,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:08:47,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-09-16 11:08:47,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482030320] [2022-09-16 11:08:47,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:08:47,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:08:47,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:47,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:08:47,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:08:47,441 INFO L87 Difference]: Start difference. First operand 45538 states and 169833 transitions. Second operand has 23 states, 23 states have (on average 7.826086956521739) internal successors, (180), 23 states have internal predecessors, (180), 0 states have call successors, (0), 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 11:08:49,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:49,621 INFO L93 Difference]: Finished difference Result 114103 states and 418752 transitions. [2022-09-16 11:08:49,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:08:49,621 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.826086956521739) internal successors, (180), 23 states have internal predecessors, (180), 0 states have call successors, (0), 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 84 [2022-09-16 11:08:49,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:50,296 INFO L225 Difference]: With dead ends: 114103 [2022-09-16 11:08:50,296 INFO L226 Difference]: Without dead ends: 113779 [2022-09-16 11:08:50,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=486, Invalid=1676, Unknown=0, NotChecked=0, Total=2162 [2022-09-16 11:08:50,297 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 2790 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2790 SdHoareTripleChecker+Valid, 2431 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:50,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2790 Valid, 2431 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-09-16 11:08:50,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113779 states. [2022-09-16 11:08:52,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113779 to 74881. [2022-09-16 11:08:52,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74881 states, 74869 states have (on average 3.794000186993282) internal successors, (284053), 74880 states have internal predecessors, (284053), 0 states have call successors, (0), 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 11:08:53,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74881 states to 74881 states and 284053 transitions. [2022-09-16 11:08:53,590 INFO L78 Accepts]: Start accepts. Automaton has 74881 states and 284053 transitions. Word has length 84 [2022-09-16 11:08:53,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:53,590 INFO L495 AbstractCegarLoop]: Abstraction has 74881 states and 284053 transitions. [2022-09-16 11:08:53,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.826086956521739) internal successors, (180), 23 states have internal predecessors, (180), 0 states have call successors, (0), 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 11:08:53,591 INFO L276 IsEmpty]: Start isEmpty. Operand 74881 states and 284053 transitions. [2022-09-16 11:08:53,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-09-16 11:08:53,603 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:53,604 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] [2022-09-16 11:08:53,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:08:53,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:53,820 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:08:53,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:53,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1153657876, now seen corresponding path program 1 times [2022-09-16 11:08:53,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:53,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488964509] [2022-09-16 11:08:53,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:53,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:53,927 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 11:08:53,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:53,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488964509] [2022-09-16 11:08:53,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488964509] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:08:53,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140698012] [2022-09-16 11:08:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:53,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:53,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:53,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:08:53,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:08:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:54,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:08:54,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:08:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:08:54,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:08:54,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140698012] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:54,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:08:54,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-09-16 11:08:54,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947362245] [2022-09-16 11:08:54,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:54,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:08:54,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:54,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:08:54,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:08:54,115 INFO L87 Difference]: Start difference. First operand 74881 states and 284053 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 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 11:08:55,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:55,191 INFO L93 Difference]: Finished difference Result 69883 states and 264415 transitions. [2022-09-16 11:08:55,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:08:55,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-09-16 11:08:55,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:55,498 INFO L225 Difference]: With dead ends: 69883 [2022-09-16 11:08:55,498 INFO L226 Difference]: Without dead ends: 68419 [2022-09-16 11:08:55,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:08:55,499 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 162 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:55,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 619 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:08:55,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68419 states. [2022-09-16 11:08:57,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68419 to 62411. [2022-09-16 11:08:57,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62411 states, 62405 states have (on average 3.78669978367118) internal successors, (236309), 62410 states have internal predecessors, (236309), 0 states have call successors, (0), 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 11:08:57,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62411 states to 62411 states and 236309 transitions. [2022-09-16 11:08:57,815 INFO L78 Accepts]: Start accepts. Automaton has 62411 states and 236309 transitions. Word has length 89 [2022-09-16 11:08:57,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:57,819 INFO L495 AbstractCegarLoop]: Abstraction has 62411 states and 236309 transitions. [2022-09-16 11:08:57,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 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 11:08:57,820 INFO L276 IsEmpty]: Start isEmpty. Operand 62411 states and 236309 transitions. [2022-09-16 11:08:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-09-16 11:08:57,833 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:57,833 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:08:57,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:08:58,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:58,037 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:08:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:58,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1437094970, now seen corresponding path program 2 times [2022-09-16 11:08:58,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:58,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162762968] [2022-09-16 11:08:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:58,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:08:58,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:58,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162762968] [2022-09-16 11:08:58,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162762968] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:08:58,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138535894] [2022-09-16 11:08:58,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:08:58,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:58,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:58,155 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:08:58,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:08:58,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:08:58,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:08:58,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:08:58,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:08:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:08:58,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:08:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:08:58,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138535894] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:08:58,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:08:58,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:08:58,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667278469] [2022-09-16 11:08:58,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:08:58,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:08:58,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:58,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:08:58,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:08:58,500 INFO L87 Difference]: Start difference. First operand 62411 states and 236309 transitions. Second operand has 18 states, 17 states have (on average 7.529411764705882) internal successors, (128), 18 states have internal predecessors, (128), 0 states have call successors, (0), 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 11:09:02,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:02,009 INFO L93 Difference]: Finished difference Result 257533 states and 971833 transitions. [2022-09-16 11:09:02,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:09:02,010 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 7.529411764705882) internal successors, (128), 18 states have internal predecessors, (128), 0 states have call successors, (0), 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 89 [2022-09-16 11:09:02,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:04,333 INFO L225 Difference]: With dead ends: 257533 [2022-09-16 11:09:04,334 INFO L226 Difference]: Without dead ends: 257533 [2022-09-16 11:09:04,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 167 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2022-09-16 11:09:04,334 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 2339 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:04,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2339 Valid, 992 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:09:05,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257533 states. [2022-09-16 11:09:08,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257533 to 62387. [2022-09-16 11:09:08,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62387 states, 62382 states have (on average 3.787679138212946) internal successors, (236283), 62386 states have internal predecessors, (236283), 0 states have call successors, (0), 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 11:09:09,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62387 states to 62387 states and 236283 transitions. [2022-09-16 11:09:09,718 INFO L78 Accepts]: Start accepts. Automaton has 62387 states and 236283 transitions. Word has length 89 [2022-09-16 11:09:09,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:09,719 INFO L495 AbstractCegarLoop]: Abstraction has 62387 states and 236283 transitions. [2022-09-16 11:09:09,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 7.529411764705882) internal successors, (128), 18 states have internal predecessors, (128), 0 states have call successors, (0), 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 11:09:09,719 INFO L276 IsEmpty]: Start isEmpty. Operand 62387 states and 236283 transitions. [2022-09-16 11:09:09,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-09-16 11:09:09,736 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:09,736 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2022-09-16 11:09:09,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:09:09,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-16 11:09:09,937 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:09:09,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash 684918698, now seen corresponding path program 1 times [2022-09-16 11:09:09,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:09,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822749805] [2022-09-16 11:09:09,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:09,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:09:09,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:09,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822749805] [2022-09-16 11:09:09,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822749805] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:09,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861573554] [2022-09-16 11:09:09,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:09,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:09,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:09,991 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:09:09,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:09:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:10,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:09:10,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:09:10,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:09:10,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861573554] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:10,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:09:10,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:09:10,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049261571] [2022-09-16 11:09:10,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:10,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:10,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:10,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:10,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:09:10,102 INFO L87 Difference]: Start difference. First operand 62387 states and 236283 transitions. Second operand has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 11:09:10,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:10,976 INFO L93 Difference]: Finished difference Result 68477 states and 255896 transitions. [2022-09-16 11:09:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:09:10,977 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 94 [2022-09-16 11:09:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:11,275 INFO L225 Difference]: With dead ends: 68477 [2022-09-16 11:09:11,276 INFO L226 Difference]: Without dead ends: 68477 [2022-09-16 11:09:11,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:09:11,276 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 214 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:11,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 679 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:09:11,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68477 states. [2022-09-16 11:09:12,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68477 to 60531. [2022-09-16 11:09:12,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60531 states, 60528 states have (on average 3.7883293682262753) internal successors, (229300), 60530 states have internal predecessors, (229300), 0 states have call successors, (0), 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 11:09:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60531 states to 60531 states and 229300 transitions. [2022-09-16 11:09:13,188 INFO L78 Accepts]: Start accepts. Automaton has 60531 states and 229300 transitions. Word has length 94 [2022-09-16 11:09:13,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:13,188 INFO L495 AbstractCegarLoop]: Abstraction has 60531 states and 229300 transitions. [2022-09-16 11:09:13,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 11:09:13,188 INFO L276 IsEmpty]: Start isEmpty. Operand 60531 states and 229300 transitions. [2022-09-16 11:09:13,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-09-16 11:09:13,213 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:13,213 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-09-16 11:09:13,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 11:09:13,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-09-16 11:09:13,414 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:09:13,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:13,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1153031729, now seen corresponding path program 2 times [2022-09-16 11:09:13,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:13,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749419591] [2022-09-16 11:09:13,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:13,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:13,934 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:13,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:13,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749419591] [2022-09-16 11:09:13,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749419591] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:13,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666786425] [2022-09-16 11:09:13,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:09:13,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:13,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:13,936 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:09:13,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:09:14,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:09:14,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:09:14,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:09:14,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-16 11:09:14,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-09-16 11:09:14,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666786425] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:14,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:14,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-09-16 11:09:14,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023855874] [2022-09-16 11:09:14,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:14,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:09:14,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:14,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:09:14,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:09:14,288 INFO L87 Difference]: Start difference. First operand 60531 states and 229300 transitions. Second operand has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 0 states have call successors, (0), 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 11:09:16,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:16,603 INFO L93 Difference]: Finished difference Result 133788 states and 486107 transitions. [2022-09-16 11:09:16,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-16 11:09:16,604 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 0 states have call successors, (0), 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 100 [2022-09-16 11:09:16,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:17,587 INFO L225 Difference]: With dead ends: 133788 [2022-09-16 11:09:17,588 INFO L226 Difference]: Without dead ends: 128538 [2022-09-16 11:09:17,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 193 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=593, Invalid=2377, Unknown=0, NotChecked=0, Total=2970 [2022-09-16 11:09:17,589 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 2485 mSDsluCounter, 3207 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:17,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2485 Valid, 3205 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-09-16 11:09:17,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128538 states. [2022-09-16 11:09:19,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128538 to 50731. [2022-09-16 11:09:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50731 states, 50730 states have (on average 3.700039424403706) internal successors, (187703), 50730 states have internal predecessors, (187703), 0 states have call successors, (0), 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 11:09:20,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50731 states to 50731 states and 187703 transitions. [2022-09-16 11:09:20,298 INFO L78 Accepts]: Start accepts. Automaton has 50731 states and 187703 transitions. Word has length 100 [2022-09-16 11:09:20,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:20,298 INFO L495 AbstractCegarLoop]: Abstraction has 50731 states and 187703 transitions. [2022-09-16 11:09:20,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.473684210526315) internal successors, (161), 19 states have internal predecessors, (161), 0 states have call successors, (0), 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 11:09:20,298 INFO L276 IsEmpty]: Start isEmpty. Operand 50731 states and 187703 transitions. [2022-09-16 11:09:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-09-16 11:09:20,332 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:20,332 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:09:20,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 11:09:20,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:09:20,533 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:09:20,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash -346541334, now seen corresponding path program 2 times [2022-09-16 11:09:20,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:20,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787874245] [2022-09-16 11:09:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:20,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:20,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:20,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787874245] [2022-09-16 11:09:20,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787874245] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:20,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637674817] [2022-09-16 11:09:20,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:09:20,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:20,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:20,626 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:09:20,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:09:20,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:09:20,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:09:20,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:09:20,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 11:09:20,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 11:09:20,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637674817] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:20,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:20,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-09-16 11:09:20,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536257777] [2022-09-16 11:09:20,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:20,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:09:20,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:20,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:09:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:09:20,919 INFO L87 Difference]: Start difference. First operand 50731 states and 187703 transitions. Second operand has 16 states, 15 states have (on average 10.866666666666667) internal successors, (163), 16 states have internal predecessors, (163), 0 states have call successors, (0), 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 11:09:22,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:22,015 INFO L93 Difference]: Finished difference Result 65561 states and 242763 transitions. [2022-09-16 11:09:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:09:22,015 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 10.866666666666667) internal successors, (163), 16 states have internal predecessors, (163), 0 states have call successors, (0), 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 102 [2022-09-16 11:09:22,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:22,016 INFO L225 Difference]: With dead ends: 65561 [2022-09-16 11:09:22,016 INFO L226 Difference]: Without dead ends: 0 [2022-09-16 11:09:22,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 196 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=857, Unknown=0, NotChecked=0, Total=1190 [2022-09-16 11:09:22,017 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1435 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:22,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 1234 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:22,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-09-16 11:09:22,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-09-16 11:09:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 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 11:09:22,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-09-16 11:09:22,018 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2022-09-16 11:09:22,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:22,018 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-09-16 11:09:22,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 10.866666666666667) internal successors, (163), 16 states have internal predecessors, (163), 0 states have call successors, (0), 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 11:09:22,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-09-16 11:09:22,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-09-16 11:09:22,021 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-09-16 11:09:22,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-09-16 11:09:22,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-09-16 11:09:22,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-09-16 11:09:22,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-09-16 11:09:22,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-09-16 11:09:22,022 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-09-16 11:09:22,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-09-16 11:09:22,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-09-16 11:09:22,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-09-16 11:09:22,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-09-16 11:09:22,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-09-16 11:09:22,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-09-16 11:09:22,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-09-16 11:09:22,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-09-16 11:09:22,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-09-16 11:09:22,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-09-16 11:09:22,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:09:22,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:09:22,231 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:22,235 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:09:22,235 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:09:22,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:09:22 BasicIcfg [2022-09-16 11:09:22,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:09:22,238 INFO L158 Benchmark]: Toolchain (without parser) took 58294.97ms. Allocated memory was 210.8MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 156.5MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 987.5MB. Max. memory is 8.0GB. [2022-09-16 11:09:22,239 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 210.8MB. Free memory is still 173.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:09:22,239 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.84ms. Allocated memory is still 210.8MB. Free memory was 156.3MB in the beginning and 188.9MB in the end (delta: -32.5MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. [2022-09-16 11:09:22,239 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.73ms. Allocated memory is still 210.8MB. Free memory was 188.3MB in the beginning and 186.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:09:22,239 INFO L158 Benchmark]: Boogie Preprocessor took 26.75ms. Allocated memory is still 210.8MB. Free memory was 186.8MB in the beginning and 185.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:09:22,239 INFO L158 Benchmark]: RCFGBuilder took 527.15ms. Allocated memory is still 210.8MB. Free memory was 185.2MB in the beginning and 164.7MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-09-16 11:09:22,242 INFO L158 Benchmark]: TraceAbstraction took 57421.15ms. Allocated memory was 210.8MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 164.2MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 994.9MB. Max. memory is 8.0GB. [2022-09-16 11:09:22,243 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 210.8MB. Free memory is still 173.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 258.84ms. Allocated memory is still 210.8MB. Free memory was 156.3MB in the beginning and 188.9MB in the end (delta: -32.5MB). Peak memory consumption was 9.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.73ms. Allocated memory is still 210.8MB. Free memory was 188.3MB in the beginning and 186.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.75ms. Allocated memory is still 210.8MB. Free memory was 186.8MB in the beginning and 185.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 527.15ms. Allocated memory is still 210.8MB. Free memory was 185.2MB in the beginning and 164.7MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 57421.15ms. Allocated memory was 210.8MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 164.2MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 994.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 110]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 199 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 57.2s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.2s, AutomataDifference: 24.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12753 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12753 mSDsluCounter, 16178 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14393 mSDsCounter, 193 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3239 IncrementalHoareTripleChecker+Invalid, 3432 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 193 mSolverCounterUnsat, 2926 mSDtfsCounter, 3239 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1679 GetRequests, 1374 SyntacticMatches, 12 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74881occurred in iteration=11, InterpolantAutomatonStates: 218, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 25.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 422611 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 2198 NumberOfCodeBlocks, 2102 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2683 ConstructedInterpolants, 0 QuantifiedInterpolants, 5517 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1975 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 309/597 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:09:22,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...