/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-buffer-series2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:07:24,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:07:24,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:07:24,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:07:24,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:07:24,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:07:24,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:07:24,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:07:24,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:07:24,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:07:24,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:07:24,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:07:24,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:07:24,425 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:07:24,426 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:07:24,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:07:24,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:07:24,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:07:24,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:07:24,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:07:24,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:07:24,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:07:24,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:07:24,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:07:24,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:07:24,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:07:24,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:07:24,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:07:24,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:07:24,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:07:24,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:07:24,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:07:24,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:07:24,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:07:24,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:07:24,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:07:24,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:07:24,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:07:24,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:07:24,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:07:24,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:07:24,457 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 11:07:24,494 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:07:24,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:07:24,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:07:24,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:07:24,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:07:24,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:07:24,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:07:24,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:07:24,496 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:07:24,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:07:24,497 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:07:24,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:07:24,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:07:24,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:07:24,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:07:24,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:07:24,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:07:24,498 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:07:24,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:07:24,498 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:07:24,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:07:24,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:07:24,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:07:24,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:07:24,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:07:24,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:07:24,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:07:24,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:07:24,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:07:24,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:07:24,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:07:24,501 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:07:24,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:07:24,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:07:24,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:07:24,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:07:24,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:07:24,751 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:07:24,752 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:07:24,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2022-09-16 11:07:24,807 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c9eb5e34/4f4a3d2996db4cc9a6fcf0bd7d9b3d60/FLAGe87b523fa [2022-09-16 11:07:25,259 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:07:25,260 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series2.wvr.c [2022-09-16 11:07:25,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c9eb5e34/4f4a3d2996db4cc9a6fcf0bd7d9b3d60/FLAGe87b523fa [2022-09-16 11:07:25,636 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c9eb5e34/4f4a3d2996db4cc9a6fcf0bd7d9b3d60 [2022-09-16 11:07:25,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:07:25,640 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:07:25,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:07:25,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:07:25,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:07:25,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:07:25" (1/1) ... [2022-09-16 11:07:25,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27d0c3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:25, skipping insertion in model container [2022-09-16 11:07:25,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:07:25" (1/1) ... [2022-09-16 11:07:25,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:07:25,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:07:25,920 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-buffer-series2.wvr.c[4232,4245] [2022-09-16 11:07:25,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:07:25,945 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:07:25,988 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-buffer-series2.wvr.c[4232,4245] [2022-09-16 11:07:25,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:07:26,008 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:07:26,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:26 WrapperNode [2022-09-16 11:07:26,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:07:26,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:07:26,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:07:26,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:07:26,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:26" (1/1) ... [2022-09-16 11:07:26,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:26" (1/1) ... [2022-09-16 11:07:26,077 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 394 [2022-09-16 11:07:26,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:07:26,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:07:26,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:07:26,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:07:26,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:26" (1/1) ... [2022-09-16 11:07:26,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:26" (1/1) ... [2022-09-16 11:07:26,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:26" (1/1) ... [2022-09-16 11:07:26,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:26" (1/1) ... [2022-09-16 11:07:26,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:26" (1/1) ... [2022-09-16 11:07:26,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:26" (1/1) ... [2022-09-16 11:07:26,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:26" (1/1) ... [2022-09-16 11:07:26,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:07:26,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:07:26,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:07:26,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:07:26,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:26" (1/1) ... [2022-09-16 11:07:26,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:07:26,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:07:26,185 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 11:07:26,210 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 11:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:07:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:07:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:07:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:07:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:07:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:07:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:07:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:07:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:07:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:07:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:07:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:07:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:07:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:07:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:07:26,240 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 11:07:26,388 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:07:26,389 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:07:26,988 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:07:27,535 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:07:27,535 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-09-16 11:07:27,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:07:27 BoogieIcfgContainer [2022-09-16 11:07:27,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:07:27,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:07:27,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:07:27,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:07:27,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:07:25" (1/3) ... [2022-09-16 11:07:27,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d7ed45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:07:27, skipping insertion in model container [2022-09-16 11:07:27,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:26" (2/3) ... [2022-09-16 11:07:27,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d7ed45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:07:27, skipping insertion in model container [2022-09-16 11:07:27,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:07:27" (3/3) ... [2022-09-16 11:07:27,548 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2022-09-16 11:07:27,557 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:07:27,565 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:07:27,566 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-09-16 11:07:27,566 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:07:27,710 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:07:27,740 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 293 places, 302 transitions, 636 flow [2022-09-16 11:07:32,701 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 151722 states, 148882 states have (on average 4.999146975457073) internal successors, (744283), 151721 states have internal predecessors, (744283), 0 states have call successors, (0), 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 11:07:32,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:07:32,742 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;@7163e45c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:07:32,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2022-09-16 11:07:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 151722 states, 148882 states have (on average 4.999146975457073) internal successors, (744283), 151721 states have internal predecessors, (744283), 0 states have call successors, (0), 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 11:07:33,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-09-16 11:07:33,028 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:07:33,029 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] [2022-09-16 11:07:33,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:07:33,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:07:33,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1890265644, now seen corresponding path program 1 times [2022-09-16 11:07:33,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:07:33,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681668569] [2022-09-16 11:07:33,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:07:33,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:07:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:07:33,763 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 11:07:33,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:07:33,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681668569] [2022-09-16 11:07:33,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681668569] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:07:33,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:07:33,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:07:33,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602864749] [2022-09-16 11:07:33,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:07:33,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:07:33,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:07:33,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:07:33,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:07:34,260 INFO L87 Difference]: Start difference. First operand has 151722 states, 148882 states have (on average 4.999146975457073) internal successors, (744283), 151721 states have internal predecessors, (744283), 0 states have call successors, (0), 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 24.333333333333332) internal successors, (73), 4 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 11:07:37,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:07:37,437 INFO L93 Difference]: Finished difference Result 126757 states and 581389 transitions. [2022-09-16 11:07:37,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:07:37,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 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 73 [2022-09-16 11:07:37,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:07:39,083 INFO L225 Difference]: With dead ends: 126757 [2022-09-16 11:07:39,083 INFO L226 Difference]: Without dead ends: 126749 [2022-09-16 11:07:39,084 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 11:07:39,088 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 131 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:07:39,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 597 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-09-16 11:07:39,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126749 states. [2022-09-16 11:07:43,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126749 to 63449. [2022-09-16 11:07:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63449 states, 63012 states have (on average 4.614486129626103) internal successors, (290768), 63448 states have internal predecessors, (290768), 0 states have call successors, (0), 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 11:07:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63449 states to 63449 states and 290768 transitions. [2022-09-16 11:07:44,869 INFO L78 Accepts]: Start accepts. Automaton has 63449 states and 290768 transitions. Word has length 73 [2022-09-16 11:07:44,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:07:44,872 INFO L495 AbstractCegarLoop]: Abstraction has 63449 states and 290768 transitions. [2022-09-16 11:07:44,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 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 11:07:44,873 INFO L276 IsEmpty]: Start isEmpty. Operand 63449 states and 290768 transitions. [2022-09-16 11:07:44,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-09-16 11:07:44,877 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:07:44,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:07:44,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:07:44,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:07:44,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:07:44,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1530625239, now seen corresponding path program 1 times [2022-09-16 11:07:44,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:07:44,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176553195] [2022-09-16 11:07:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:07:44,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:07:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:07:45,003 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 11:07:45,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:07:45,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176553195] [2022-09-16 11:07:45,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176553195] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:07:45,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165936329] [2022-09-16 11:07:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:07:45,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:07:45,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:07:45,007 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 11:07:45,008 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 11:07:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:07:45,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:07:45,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:07:45,285 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 11:07:45,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:07:45,340 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 11:07:45,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165936329] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:07:45,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:07:45,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:07:45,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887618788] [2022-09-16 11:07:45,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:07:45,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:07:45,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:07:45,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:07:45,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:07:45,344 INFO L87 Difference]: Start difference. First operand 63449 states and 290768 transitions. Second operand has 12 states, 11 states have (on average 9.727272727272727) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:07:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:07:51,259 INFO L93 Difference]: Finished difference Result 316718 states and 1453298 transitions. [2022-09-16 11:07:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:07:51,268 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.727272727272727) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-09-16 11:07:51,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:07:55,716 INFO L225 Difference]: With dead ends: 316718 [2022-09-16 11:07:55,716 INFO L226 Difference]: Without dead ends: 316718 [2022-09-16 11:07:55,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 157 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 11:07:55,718 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 1210 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-09-16 11:07:55,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 828 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-09-16 11:07:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316718 states. [2022-09-16 11:08:03,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316718 to 63527. [2022-09-16 11:08:03,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63527 states, 63090 states have (on average 4.610255190996988) internal successors, (290861), 63526 states have internal predecessors, (290861), 0 states have call successors, (0), 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 11:08:04,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63527 states to 63527 states and 290861 transitions. [2022-09-16 11:08:04,301 INFO L78 Accepts]: Start accepts. Automaton has 63527 states and 290861 transitions. Word has length 82 [2022-09-16 11:08:04,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:04,302 INFO L495 AbstractCegarLoop]: Abstraction has 63527 states and 290861 transitions. [2022-09-16 11:08:04,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.727272727272727) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:08:04,302 INFO L276 IsEmpty]: Start isEmpty. Operand 63527 states and 290861 transitions. [2022-09-16 11:08:04,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-09-16 11:08:04,303 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:04,303 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:08:04,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 11:08:04,506 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 11:08:04,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:08:04,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash -204741029, now seen corresponding path program 1 times [2022-09-16 11:08:04,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:04,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565522798] [2022-09-16 11:08:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:04,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:04,612 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 11:08:04,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:04,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565522798] [2022-09-16 11:08:04,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565522798] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:08:04,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691464255] [2022-09-16 11:08:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:04,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:04,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:04,614 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 11:08:04,616 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 11:08:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:04,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:08:04,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:08:04,820 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 11:08:04,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:08:04,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691464255] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:04,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:08:04,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:08:04,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572744354] [2022-09-16 11:08:04,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:04,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:08:04,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:04,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:08:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:08:04,824 INFO L87 Difference]: Start difference. First operand 63527 states and 290861 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 11:08:07,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:07,203 INFO L93 Difference]: Finished difference Result 126818 states and 581459 transitions. [2022-09-16 11:08:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:08:07,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-09-16 11:08:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:08,861 INFO L225 Difference]: With dead ends: 126818 [2022-09-16 11:08:08,862 INFO L226 Difference]: Without dead ends: 126818 [2022-09-16 11:08:08,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 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 11:08:08,863 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 269 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:08,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 825 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:08:09,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126818 states. [2022-09-16 11:08:12,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126818 to 63524. [2022-09-16 11:08:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63524 states, 63090 states have (on average 4.610112537644635) internal successors, (290852), 63523 states have internal predecessors, (290852), 0 states have call successors, (0), 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 11:08:13,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63524 states to 63524 states and 290852 transitions. [2022-09-16 11:08:13,238 INFO L78 Accepts]: Start accepts. Automaton has 63524 states and 290852 transitions. Word has length 83 [2022-09-16 11:08:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:13,238 INFO L495 AbstractCegarLoop]: Abstraction has 63524 states and 290852 transitions. [2022-09-16 11:08:13,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 11:08:13,239 INFO L276 IsEmpty]: Start isEmpty. Operand 63524 states and 290852 transitions. [2022-09-16 11:08:13,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-09-16 11:08:13,246 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:13,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:08:13,273 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 11:08:13,459 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 11:08:13,460 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:08:13,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:13,460 INFO L85 PathProgramCache]: Analyzing trace with hash -739341036, now seen corresponding path program 2 times [2022-09-16 11:08:13,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:13,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307125583] [2022-09-16 11:08:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:13,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:13,645 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 11:08:13,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:13,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307125583] [2022-09-16 11:08:13,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307125583] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:08:13,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590933870] [2022-09-16 11:08:13,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:08:13,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:13,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:13,656 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 11:08:13,681 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 11:08:13,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:08:13,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:08:13,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:08:13,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:08:13,954 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 11:08:13,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:08:14,108 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 11:08:14,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590933870] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:08:14,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:08:14,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:08:14,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888630789] [2022-09-16 11:08:14,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:08:14,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:08:14,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:14,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:08:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:08:14,111 INFO L87 Difference]: Start difference. First operand 63524 states and 290852 transitions. Second operand has 18 states, 17 states have (on average 9.352941176470589) internal successors, (159), 18 states have internal predecessors, (159), 0 states have call successors, (0), 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 11:08:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:22,894 INFO L93 Difference]: Finished difference Result 406548 states and 1864956 transitions. [2022-09-16 11:08:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:08:22,894 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 9.352941176470589) internal successors, (159), 18 states have internal predecessors, (159), 0 states have call successors, (0), 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 109 [2022-09-16 11:08:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:29,217 INFO L225 Difference]: With dead ends: 406548 [2022-09-16 11:08:29,217 INFO L226 Difference]: Without dead ends: 406548 [2022-09-16 11:08:29,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 207 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=991, Invalid=3041, Unknown=0, NotChecked=0, Total=4032 [2022-09-16 11:08:29,219 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 3541 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3541 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:29,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3541 Valid, 1844 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-09-16 11:08:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406548 states. [2022-09-16 11:08:39,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406548 to 58270. [2022-09-16 11:08:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58270 states, 57909 states have (on average 4.60422386848331) internal successors, (266626), 58269 states have internal predecessors, (266626), 0 states have call successors, (0), 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 11:08:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58270 states to 58270 states and 266626 transitions. [2022-09-16 11:08:40,514 INFO L78 Accepts]: Start accepts. Automaton has 58270 states and 266626 transitions. Word has length 109 [2022-09-16 11:08:40,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:40,514 INFO L495 AbstractCegarLoop]: Abstraction has 58270 states and 266626 transitions. [2022-09-16 11:08:40,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 9.352941176470589) internal successors, (159), 18 states have internal predecessors, (159), 0 states have call successors, (0), 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 11:08:40,515 INFO L276 IsEmpty]: Start isEmpty. Operand 58270 states and 266626 transitions. [2022-09-16 11:08:40,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-09-16 11:08:40,516 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:40,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:08:40,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:08:40,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:40,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:08:40,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1387794405, now seen corresponding path program 1 times [2022-09-16 11:08:40,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:40,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376427688] [2022-09-16 11:08:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:40,819 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 11:08:40,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:40,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376427688] [2022-09-16 11:08:40,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376427688] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:40,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:08:40,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:08:40,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033825257] [2022-09-16 11:08:40,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:40,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:08:40,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:40,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:08:40,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:08:40,822 INFO L87 Difference]: Start difference. First operand 58270 states and 266626 transitions. Second operand has 3 states, 2 states have (on average 70.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 11:08:42,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:42,078 INFO L93 Difference]: Finished difference Result 92251 states and 421324 transitions. [2022-09-16 11:08:42,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:08:42,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 70.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-09-16 11:08:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:43,160 INFO L225 Difference]: With dead ends: 92251 [2022-09-16 11:08:43,161 INFO L226 Difference]: Without dead ends: 92251 [2022-09-16 11:08:43,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:08:43,162 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 95 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:43,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 269 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:08:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92251 states. [2022-09-16 11:08:46,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92251 to 70282. [2022-09-16 11:08:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70282 states, 69921 states have (on average 4.69598546931537) internal successors, (328348), 70281 states have internal predecessors, (328348), 0 states have call successors, (0), 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 11:08:46,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70282 states to 70282 states and 328348 transitions. [2022-09-16 11:08:46,682 INFO L78 Accepts]: Start accepts. Automaton has 70282 states and 328348 transitions. Word has length 140 [2022-09-16 11:08:46,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:46,683 INFO L495 AbstractCegarLoop]: Abstraction has 70282 states and 328348 transitions. [2022-09-16 11:08:46,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 70.0) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 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 11:08:46,683 INFO L276 IsEmpty]: Start isEmpty. Operand 70282 states and 328348 transitions. [2022-09-16 11:08:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:08:46,685 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:46,685 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:08:46,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:08:46,686 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:08:46,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:46,686 INFO L85 PathProgramCache]: Analyzing trace with hash -426607619, now seen corresponding path program 1 times [2022-09-16 11:08:46,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:46,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034552976] [2022-09-16 11:08:46,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:46,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:08:46,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:46,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034552976] [2022-09-16 11:08:46,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034552976] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:08:46,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703222814] [2022-09-16 11:08:46,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:46,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:46,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:46,751 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 11:08:46,756 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 11:08:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:46,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:08:46,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:08:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:08:47,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:08:47,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703222814] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:47,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:08:47,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3] total 8 [2022-09-16 11:08:47,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687479446] [2022-09-16 11:08:47,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:47,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:08:47,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:47,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:08:47,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:08:47,529 INFO L87 Difference]: Start difference. First operand 70282 states and 328348 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 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 11:08:48,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:48,895 INFO L93 Difference]: Finished difference Result 92286 states and 420888 transitions. [2022-09-16 11:08:48,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:08:48,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-09-16 11:08:48,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:49,574 INFO L225 Difference]: With dead ends: 92286 [2022-09-16 11:08:49,574 INFO L226 Difference]: Without dead ends: 91206 [2022-09-16 11:08:49,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:08:49,575 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 179 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:49,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 900 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:08:49,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91206 states. [2022-09-16 11:08:52,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91206 to 85554. [2022-09-16 11:08:52,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85554 states, 85124 states have (on average 4.6317959682345755) internal successors, (394277), 85553 states have internal predecessors, (394277), 0 states have call successors, (0), 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 11:08:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85554 states to 85554 states and 394277 transitions. [2022-09-16 11:08:54,407 INFO L78 Accepts]: Start accepts. Automaton has 85554 states and 394277 transitions. Word has length 143 [2022-09-16 11:08:54,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:54,408 INFO L495 AbstractCegarLoop]: Abstraction has 85554 states and 394277 transitions. [2022-09-16 11:08:54,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 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 11:08:54,408 INFO L276 IsEmpty]: Start isEmpty. Operand 85554 states and 394277 transitions. [2022-09-16 11:08:54,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-09-16 11:08:54,421 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:54,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:08:54,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-16 11:08:54,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:54,648 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:08:54,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:54,648 INFO L85 PathProgramCache]: Analyzing trace with hash -140691382, now seen corresponding path program 1 times [2022-09-16 11:08:54,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:54,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446873923] [2022-09-16 11:08:54,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:54,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:54,810 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 11:08:54,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:54,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446873923] [2022-09-16 11:08:54,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446873923] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:54,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:08:54,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:08:54,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963531518] [2022-09-16 11:08:54,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:54,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:08:54,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:54,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:08:54,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:08:54,813 INFO L87 Difference]: Start difference. First operand 85554 states and 394277 transitions. Second operand has 3 states, 2 states have (on average 73.0) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 11:08:57,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:57,897 INFO L93 Difference]: Finished difference Result 136161 states and 628313 transitions. [2022-09-16 11:08:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:08:57,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 73.0) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-09-16 11:08:57,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:59,968 INFO L225 Difference]: With dead ends: 136161 [2022-09-16 11:08:59,968 INFO L226 Difference]: Without dead ends: 136161 [2022-09-16 11:08:59,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:08:59,970 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 89 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:59,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 265 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:00,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136161 states. [2022-09-16 11:09:04,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136161 to 102750. [2022-09-16 11:09:04,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102750 states, 102320 states have (on average 4.796354573885848) internal successors, (490763), 102749 states have internal predecessors, (490763), 0 states have call successors, (0), 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 11:09:06,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102750 states to 102750 states and 490763 transitions. [2022-09-16 11:09:06,064 INFO L78 Accepts]: Start accepts. Automaton has 102750 states and 490763 transitions. Word has length 146 [2022-09-16 11:09:06,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:06,065 INFO L495 AbstractCegarLoop]: Abstraction has 102750 states and 490763 transitions. [2022-09-16 11:09:06,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 73.0) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 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 11:09:06,065 INFO L276 IsEmpty]: Start isEmpty. Operand 102750 states and 490763 transitions. [2022-09-16 11:09:06,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-09-16 11:09:06,067 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:06,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:09:06,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:09:06,068 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:09:06,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash -140691385, now seen corresponding path program 1 times [2022-09-16 11:09:06,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:06,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843706308] [2022-09-16 11:09:06,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:06,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:06,156 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 11:09:06,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:06,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843706308] [2022-09-16 11:09:06,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843706308] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:06,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:06,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:09:06,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39001302] [2022-09-16 11:09:06,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:06,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:06,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:06,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:06,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:09:06,158 INFO L87 Difference]: Start difference. First operand 102750 states and 490763 transitions. Second operand has 6 states, 5 states have (on average 29.2) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 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 11:09:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:08,365 INFO L93 Difference]: Finished difference Result 130568 states and 607786 transitions. [2022-09-16 11:09:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:09:08,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.2) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-09-16 11:09:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:09,949 INFO L225 Difference]: With dead ends: 130568 [2022-09-16 11:09:09,949 INFO L226 Difference]: Without dead ends: 124568 [2022-09-16 11:09:09,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:09:09,950 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 165 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:09,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 896 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-09-16 11:09:10,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124568 states. [2022-09-16 11:09:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124568 to 120247. [2022-09-16 11:09:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120247 states, 119775 states have (on average 4.727989981214778) internal successors, (566295), 120246 states have internal predecessors, (566295), 0 states have call successors, (0), 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 11:09:16,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120247 states to 120247 states and 566295 transitions. [2022-09-16 11:09:16,108 INFO L78 Accepts]: Start accepts. Automaton has 120247 states and 566295 transitions. Word has length 146 [2022-09-16 11:09:16,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:16,108 INFO L495 AbstractCegarLoop]: Abstraction has 120247 states and 566295 transitions. [2022-09-16 11:09:16,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.2) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 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 11:09:16,108 INFO L276 IsEmpty]: Start isEmpty. Operand 120247 states and 566295 transitions. [2022-09-16 11:09:16,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-09-16 11:09:16,110 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:16,110 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:09:16,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:09:16,110 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:09:16,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash -362353262, now seen corresponding path program 1 times [2022-09-16 11:09:16,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:16,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045948364] [2022-09-16 11:09:16,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:16,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:16,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:09:16,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:16,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045948364] [2022-09-16 11:09:16,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045948364] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:16,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114078203] [2022-09-16 11:09:16,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:16,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:16,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:16,168 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 11:09:16,170 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 11:09:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:16,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:09:16,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:09:16,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:09:17,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114078203] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:17,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:17,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-09-16 11:09:17,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827243145] [2022-09-16 11:09:17,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:17,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:09:17,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:17,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:09:17,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:09:17,059 INFO L87 Difference]: Start difference. First operand 120247 states and 566295 transitions. Second operand has 7 states, 6 states have (on average 70.5) internal successors, (423), 7 states have internal predecessors, (423), 0 states have call successors, (0), 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 11:09:24,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:24,027 INFO L93 Difference]: Finished difference Result 322387 states and 1524198 transitions. [2022-09-16 11:09:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:09:24,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 70.5) internal successors, (423), 7 states have internal predecessors, (423), 0 states have call successors, (0), 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 152 [2022-09-16 11:09:24,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:28,447 INFO L225 Difference]: With dead ends: 322387 [2022-09-16 11:09:28,447 INFO L226 Difference]: Without dead ends: 322387 [2022-09-16 11:09:28,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:09:28,448 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 624 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:28,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 493 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:09:29,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322387 states. [2022-09-16 11:09:39,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322387 to 199735. [2022-09-16 11:09:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199735 states, 199263 states have (on average 4.9833335842579904) internal successors, (992994), 199734 states have internal predecessors, (992994), 0 states have call successors, (0), 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 11:09:43,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199735 states to 199735 states and 992994 transitions. [2022-09-16 11:09:43,385 INFO L78 Accepts]: Start accepts. Automaton has 199735 states and 992994 transitions. Word has length 152 [2022-09-16 11:09:43,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:43,385 INFO L495 AbstractCegarLoop]: Abstraction has 199735 states and 992994 transitions. [2022-09-16 11:09:43,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 70.5) internal successors, (423), 7 states have internal predecessors, (423), 0 states have call successors, (0), 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 11:09:43,385 INFO L276 IsEmpty]: Start isEmpty. Operand 199735 states and 992994 transitions. [2022-09-16 11:09:43,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-09-16 11:09:43,388 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:43,388 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:09:43,420 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 11:09:43,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:43,616 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:09:43,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash -362353261, now seen corresponding path program 1 times [2022-09-16 11:09:43,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:43,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280435864] [2022-09-16 11:09:43,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:43,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:43,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:43,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280435864] [2022-09-16 11:09:43,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280435864] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:43,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51314077] [2022-09-16 11:09:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:43,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:43,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:43,734 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 11:09:43,735 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 11:09:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:43,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:09:43,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:44,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:09:44,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:09:44,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51314077] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:44,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:09:44,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2022-09-16 11:09:44,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868309439] [2022-09-16 11:09:44,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:44,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:09:44,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:44,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:09:44,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:09:44,058 INFO L87 Difference]: Start difference. First operand 199735 states and 992994 transitions. Second operand has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 11:09:48,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:48,168 INFO L93 Difference]: Finished difference Result 221566 states and 1057596 transitions. [2022-09-16 11:09:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:09:48,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2022-09-16 11:09:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:52,529 INFO L225 Difference]: With dead ends: 221566 [2022-09-16 11:09:52,529 INFO L226 Difference]: Without dead ends: 221566 [2022-09-16 11:09:52,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:09:52,530 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 154 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:52,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 476 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221566 states. [2022-09-16 11:10:02,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221566 to 190903. [2022-09-16 11:10:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190903 states, 190566 states have (on average 4.852885614432795) internal successors, (924795), 190902 states have internal predecessors, (924795), 0 states have call successors, (0), 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 11:10:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190903 states to 190903 states and 924795 transitions. [2022-09-16 11:10:05,757 INFO L78 Accepts]: Start accepts. Automaton has 190903 states and 924795 transitions. Word has length 152 [2022-09-16 11:10:05,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:05,757 INFO L495 AbstractCegarLoop]: Abstraction has 190903 states and 924795 transitions. [2022-09-16 11:10:05,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 50.666666666666664) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 11:10:05,758 INFO L276 IsEmpty]: Start isEmpty. Operand 190903 states and 924795 transitions. [2022-09-16 11:10:05,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-09-16 11:10:05,759 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:05,760 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:10:05,777 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 11:10:05,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:05,961 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:10:05,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:05,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1993837651, now seen corresponding path program 1 times [2022-09-16 11:10:05,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:05,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061770894] [2022-09-16 11:10:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:05,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:06,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:06,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061770894] [2022-09-16 11:10:06,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061770894] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:06,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795266218] [2022-09-16 11:10:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:06,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:06,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:06,113 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 11:10:06,115 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 11:10:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:06,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 11:10:06,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:06,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:06,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795266218] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:06,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:06,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-09-16 11:10:06,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275258618] [2022-09-16 11:10:06,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:06,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-16 11:10:06,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:06,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-16 11:10:06,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-09-16 11:10:06,631 INFO L87 Difference]: Start difference. First operand 190903 states and 924795 transitions. Second operand has 32 states, 31 states have (on average 7.225806451612903) internal successors, (224), 32 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)