/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-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:10:39,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:10:39,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:10:39,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:10:39,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:10:39,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:10:39,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:10:39,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:10:39,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:10:39,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:10:39,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:10:39,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:10:39,562 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:10:39,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:10:39,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:10:39,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:10:39,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:10:39,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:10:39,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:10:39,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:10:39,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:10:39,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:10:39,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:10:39,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:10:39,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:10:39,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:10:39,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:10:39,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:10:39,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:10:39,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:10:39,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:10:39,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:10:39,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:10:39,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:10:39,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:10:39,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:10:39,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:10:39,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:10:39,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:10:39,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:10:39,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:10:39,602 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 11:10:39,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:10:39,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:10:39,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:10:39,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:10:39,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:10:39,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:10:39,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:10:39,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:10:39,627 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:10:39,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:10:39,628 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:10:39,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:10:39,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:10:39,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:10:39,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:10:39,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:10:39,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:10:39,628 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:10:39,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:10:39,629 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:10:39,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:10:39,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:10:39,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:10:39,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:10:39,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:10:39,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:10:39,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:10:39,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:10:39,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:10:39,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:10:39,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:10:39,630 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:10:39,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:10:39,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:10:39,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:10:39,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:10:39,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:10:39,850 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:10:39,850 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:10:39,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-09-16 11:10:39,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bb3869d2/57490a39a9c14eba8bc281268818de68/FLAG423440d31 [2022-09-16 11:10:40,218 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:10:40,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2022-09-16 11:10:40,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bb3869d2/57490a39a9c14eba8bc281268818de68/FLAG423440d31 [2022-09-16 11:10:40,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bb3869d2/57490a39a9c14eba8bc281268818de68 [2022-09-16 11:10:40,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:10:40,669 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:10:40,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:10:40,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:10:40,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:10:40,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:10:40" (1/1) ... [2022-09-16 11:10:40,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa21a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:40, skipping insertion in model container [2022-09-16 11:10:40,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:10:40" (1/1) ... [2022-09-16 11:10:40,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:10:40,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:10:40,839 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-nonblocking-cntr.wvr.c[2037,2050] [2022-09-16 11:10:40,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:10:40,845 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:10:40,858 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-nonblocking-cntr.wvr.c[2037,2050] [2022-09-16 11:10:40,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:10:40,872 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:10:40,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:40 WrapperNode [2022-09-16 11:10:40,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:10:40,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:10:40,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:10:40,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:10:40,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:40" (1/1) ... [2022-09-16 11:10:40,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:40" (1/1) ... [2022-09-16 11:10:40,896 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-09-16 11:10:40,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:10:40,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:10:40,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:10:40,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:10:40,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:40" (1/1) ... [2022-09-16 11:10:40,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:40" (1/1) ... [2022-09-16 11:10:40,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:40" (1/1) ... [2022-09-16 11:10:40,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:40" (1/1) ... [2022-09-16 11:10:40,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:40" (1/1) ... [2022-09-16 11:10:40,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:40" (1/1) ... [2022-09-16 11:10:40,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:40" (1/1) ... [2022-09-16 11:10:40,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:10:40,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:10:40,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:10:40,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:10:40,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:40" (1/1) ... [2022-09-16 11:10:40,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:10:40,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:40,997 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 11:10:41,030 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 11:10:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:10:41,051 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:10:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:10:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:10:41,052 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:10:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:10:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:10:41,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:10:41,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:10:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:10:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:10:41,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:10:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:10:41,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:10:41,055 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 11:10:41,142 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:10:41,143 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:10:41,347 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:10:41,437 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:10:41,437 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-09-16 11:10:41,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:10:41 BoogieIcfgContainer [2022-09-16 11:10:41,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:10:41,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:10:41,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:10:41,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:10:41,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:10:40" (1/3) ... [2022-09-16 11:10:41,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa4bbdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:10:41, skipping insertion in model container [2022-09-16 11:10:41,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:40" (2/3) ... [2022-09-16 11:10:41,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa4bbdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:10:41, skipping insertion in model container [2022-09-16 11:10:41,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:10:41" (3/3) ... [2022-09-16 11:10:41,447 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2022-09-16 11:10:41,453 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:10:41,460 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:10:41,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 11:10:41,460 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:10:41,506 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:10:41,555 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 91 transitions, 198 flow [2022-09-16 11:10:41,617 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 705 states, 681 states have (on average 2.7694566813509547) internal successors, (1886), 704 states have internal predecessors, (1886), 0 states have call successors, (0), 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 11:10:41,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:10:41,635 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;@70f7eac5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:10:41,635 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-09-16 11:10:41,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 705 states, 681 states have (on average 2.7694566813509547) internal successors, (1886), 704 states have internal predecessors, (1886), 0 states have call successors, (0), 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 11:10:41,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-09-16 11:10:41,645 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:41,646 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] [2022-09-16 11:10:41,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:41,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:41,650 INFO L85 PathProgramCache]: Analyzing trace with hash -770060062, now seen corresponding path program 1 times [2022-09-16 11:10:41,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:41,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640069183] [2022-09-16 11:10:41,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:41,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:41,817 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 11:10:41,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:41,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640069183] [2022-09-16 11:10:41,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640069183] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:41,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:10:41,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:10:41,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516324621] [2022-09-16 11:10:41,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:41,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:10:41,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:41,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:10:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:10:41,852 INFO L87 Difference]: Start difference. First operand has 705 states, 681 states have (on average 2.7694566813509547) internal successors, (1886), 704 states have internal predecessors, (1886), 0 states have call successors, (0), 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 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 11:10:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:41,970 INFO L93 Difference]: Finished difference Result 753 states and 1908 transitions. [2022-09-16 11:10:41,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:10:41,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-09-16 11:10:41,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:41,995 INFO L225 Difference]: With dead ends: 753 [2022-09-16 11:10:41,995 INFO L226 Difference]: Without dead ends: 689 [2022-09-16 11:10:41,997 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 11:10:42,003 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:42,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 91 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:42,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-09-16 11:10:42,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 689. [2022-09-16 11:10:42,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 670 states have (on average 2.617910447761194) internal successors, (1754), 688 states have internal predecessors, (1754), 0 states have call successors, (0), 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 11:10:42,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1754 transitions. [2022-09-16 11:10:42,099 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1754 transitions. Word has length 32 [2022-09-16 11:10:42,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:42,100 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1754 transitions. [2022-09-16 11:10:42,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 11:10:42,101 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1754 transitions. [2022-09-16 11:10:42,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-09-16 11:10:42,102 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:42,102 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] [2022-09-16 11:10:42,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:10:42,102 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:42,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1293334427, now seen corresponding path program 1 times [2022-09-16 11:10:42,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:42,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22476726] [2022-09-16 11:10:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:42,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:42,190 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 11:10:42,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:42,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22476726] [2022-09-16 11:10:42,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22476726] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:42,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:10:42,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:10:42,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648451044] [2022-09-16 11:10:42,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:42,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:10:42,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:42,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:10:42,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:10:42,194 INFO L87 Difference]: Start difference. First operand 689 states and 1754 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 11:10:42,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:42,294 INFO L93 Difference]: Finished difference Result 899 states and 2309 transitions. [2022-09-16 11:10:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:10:42,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-09-16 11:10:42,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:42,300 INFO L225 Difference]: With dead ends: 899 [2022-09-16 11:10:42,301 INFO L226 Difference]: Without dead ends: 899 [2022-09-16 11:10:42,305 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 11:10:42,306 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 59 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:42,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 199 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:42,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-09-16 11:10:42,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 815. [2022-09-16 11:10:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 796 states have (on average 2.621859296482412) internal successors, (2087), 814 states have internal predecessors, (2087), 0 states have call successors, (0), 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 11:10:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 2087 transitions. [2022-09-16 11:10:42,339 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 2087 transitions. Word has length 34 [2022-09-16 11:10:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:42,344 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 2087 transitions. [2022-09-16 11:10:42,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 11:10:42,345 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 2087 transitions. [2022-09-16 11:10:42,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-09-16 11:10:42,347 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:42,347 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] [2022-09-16 11:10:42,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:10:42,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:42,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:42,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1354154245, now seen corresponding path program 1 times [2022-09-16 11:10:42,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:42,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700613763] [2022-09-16 11:10:42,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:42,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:42,398 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 11:10:42,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:42,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700613763] [2022-09-16 11:10:42,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700613763] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:42,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176736700] [2022-09-16 11:10:42,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:42,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:42,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:42,401 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 11:10:42,403 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 11:10:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:42,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:10:42,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:42,517 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 11:10:42,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:42,564 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 11:10:42,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176736700] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:42,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:42,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-09-16 11:10:42,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650893229] [2022-09-16 11:10:42,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:42,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:10:42,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:42,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:10:42,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:10:42,566 INFO L87 Difference]: Start difference. First operand 815 states and 2087 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 11:10:42,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:42,664 INFO L93 Difference]: Finished difference Result 2430 states and 6366 transitions. [2022-09-16 11:10:42,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:10:42,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 39 [2022-09-16 11:10:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:42,676 INFO L225 Difference]: With dead ends: 2430 [2022-09-16 11:10:42,677 INFO L226 Difference]: Without dead ends: 2400 [2022-09-16 11:10:42,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 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 11:10:42,680 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 165 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:42,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 252 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:42,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2022-09-16 11:10:42,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2021. [2022-09-16 11:10:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2021 states, 2002 states have (on average 2.8401598401598402) internal successors, (5686), 2020 states have internal predecessors, (5686), 0 states have call successors, (0), 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 11:10:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 5686 transitions. [2022-09-16 11:10:42,760 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 5686 transitions. Word has length 39 [2022-09-16 11:10:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:42,760 INFO L495 AbstractCegarLoop]: Abstraction has 2021 states and 5686 transitions. [2022-09-16 11:10:42,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 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 11:10:42,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 5686 transitions. [2022-09-16 11:10:42,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-09-16 11:10:42,766 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:42,766 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] [2022-09-16 11:10:42,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:42,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:42,986 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:42,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:42,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1354154246, now seen corresponding path program 1 times [2022-09-16 11:10:42,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:42,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253661143] [2022-09-16 11:10:42,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:42,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:43,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:43,052 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 11:10:43,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:43,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253661143] [2022-09-16 11:10:43,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253661143] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:43,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769881491] [2022-09-16 11:10:43,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:43,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:43,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:43,067 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 11:10:43,068 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 11:10:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:43,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:10:43,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:43,183 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 11:10:43,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:43,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769881491] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:43,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:43,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-09-16 11:10:43,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347700761] [2022-09-16 11:10:43,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:43,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:10:43,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:43,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:10:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:10:43,189 INFO L87 Difference]: Start difference. First operand 2021 states and 5686 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 11:10:43,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:43,256 INFO L93 Difference]: Finished difference Result 2561 states and 7197 transitions. [2022-09-16 11:10:43,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:10:43,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-09-16 11:10:43,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:43,278 INFO L225 Difference]: With dead ends: 2561 [2022-09-16 11:10:43,278 INFO L226 Difference]: Without dead ends: 2561 [2022-09-16 11:10:43,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 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 11:10:43,299 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 56 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:43,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 132 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:43,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2022-09-16 11:10:43,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 1979. [2022-09-16 11:10:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1964 states have (on average 2.776476578411405) internal successors, (5453), 1978 states have internal predecessors, (5453), 0 states have call successors, (0), 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 11:10:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 5453 transitions. [2022-09-16 11:10:43,386 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 5453 transitions. Word has length 39 [2022-09-16 11:10:43,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:43,401 INFO L495 AbstractCegarLoop]: Abstraction has 1979 states and 5453 transitions. [2022-09-16 11:10:43,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 11:10:43,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 5453 transitions. [2022-09-16 11:10:43,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-09-16 11:10:43,402 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:43,402 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] [2022-09-16 11:10:43,434 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 11:10:43,631 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,SelfDestructingSolverStorable3 [2022-09-16 11:10:43,632 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:43,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:43,633 INFO L85 PathProgramCache]: Analyzing trace with hash -461628308, now seen corresponding path program 1 times [2022-09-16 11:10:43,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:43,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975006531] [2022-09-16 11:10:43,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:43,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:43,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:43,678 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 11:10:43,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:43,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975006531] [2022-09-16 11:10:43,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975006531] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:43,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:10:43,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:10:43,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442888413] [2022-09-16 11:10:43,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:43,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:10:43,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:43,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:10:43,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:10:43,680 INFO L87 Difference]: Start difference. First operand 1979 states and 5453 transitions. Second operand has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 11:10:43,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:43,714 INFO L93 Difference]: Finished difference Result 2820 states and 7815 transitions. [2022-09-16 11:10:43,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:10:43,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-09-16 11:10:43,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:43,727 INFO L225 Difference]: With dead ends: 2820 [2022-09-16 11:10:43,727 INFO L226 Difference]: Without dead ends: 2757 [2022-09-16 11:10:43,727 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 11:10:43,728 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 22 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:43,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 122 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:43,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2022-09-16 11:10:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2294. [2022-09-16 11:10:43,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 2279 states have (on average 2.8736287845546293) internal successors, (6549), 2293 states have internal predecessors, (6549), 0 states have call successors, (0), 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 11:10:43,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 6549 transitions. [2022-09-16 11:10:43,785 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 6549 transitions. Word has length 41 [2022-09-16 11:10:43,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:43,786 INFO L495 AbstractCegarLoop]: Abstraction has 2294 states and 6549 transitions. [2022-09-16 11:10:43,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 11:10:43,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 6549 transitions. [2022-09-16 11:10:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-09-16 11:10:43,787 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:43,788 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:43,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:10:43,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:43,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash -32851000, now seen corresponding path program 1 times [2022-09-16 11:10:43,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:43,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339399298] [2022-09-16 11:10:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:43,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:43,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:43,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:43,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339399298] [2022-09-16 11:10:43,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339399298] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:43,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426560604] [2022-09-16 11:10:43,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:43,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:43,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:43,822 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 11:10:43,823 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 11:10:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:43,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:43,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:43,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:43,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426560604] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:43,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:43,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:10:43,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128768366] [2022-09-16 11:10:43,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:43,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:10:43,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:43,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:10:43,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:10:43,922 INFO L87 Difference]: Start difference. First operand 2294 states and 6549 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 11:10:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:44,184 INFO L93 Difference]: Finished difference Result 4971 states and 13993 transitions. [2022-09-16 11:10:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:10:44,184 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 41 [2022-09-16 11:10:44,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:44,226 INFO L225 Difference]: With dead ends: 4971 [2022-09-16 11:10:44,227 INFO L226 Difference]: Without dead ends: 4971 [2022-09-16 11:10:44,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 75 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 11:10:44,244 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 658 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:44,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 419 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:44,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4971 states. [2022-09-16 11:10:44,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4971 to 4164. [2022-09-16 11:10:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4164 states, 4149 states have (on average 2.858761147264401) internal successors, (11861), 4163 states have internal predecessors, (11861), 0 states have call successors, (0), 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 11:10:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 11861 transitions. [2022-09-16 11:10:44,451 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 11861 transitions. Word has length 41 [2022-09-16 11:10:44,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:44,451 INFO L495 AbstractCegarLoop]: Abstraction has 4164 states and 11861 transitions. [2022-09-16 11:10:44,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 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 11:10:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 11861 transitions. [2022-09-16 11:10:44,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-09-16 11:10:44,453 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:44,453 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:44,472 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 11:10:44,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:44,654 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:44,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1018380706, now seen corresponding path program 1 times [2022-09-16 11:10:44,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:44,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249329083] [2022-09-16 11:10:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:44,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:44,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:44,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249329083] [2022-09-16 11:10:44,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249329083] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:44,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985401087] [2022-09-16 11:10:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:44,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:44,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:44,728 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 11:10:44,729 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 11:10:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:44,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:44,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:44,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:44,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:44,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985401087] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:44,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:44,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:10:44,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786178568] [2022-09-16 11:10:44,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:44,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:44,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:44,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:44,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:10:44,808 INFO L87 Difference]: Start difference. First operand 4164 states and 11861 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 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 11:10:44,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:44,888 INFO L93 Difference]: Finished difference Result 4072 states and 11275 transitions. [2022-09-16 11:10:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:10:44,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-09-16 11:10:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:44,918 INFO L225 Difference]: With dead ends: 4072 [2022-09-16 11:10:44,918 INFO L226 Difference]: Without dead ends: 4072 [2022-09-16 11:10:44,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 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 11:10:44,919 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 106 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:44,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 306 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2022-09-16 11:10:45,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 4072. [2022-09-16 11:10:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4072 states, 4061 states have (on average 2.776409751292785) internal successors, (11275), 4071 states have internal predecessors, (11275), 0 states have call successors, (0), 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 11:10:45,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4072 states to 4072 states and 11275 transitions. [2022-09-16 11:10:45,073 INFO L78 Accepts]: Start accepts. Automaton has 4072 states and 11275 transitions. Word has length 42 [2022-09-16 11:10:45,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:45,074 INFO L495 AbstractCegarLoop]: Abstraction has 4072 states and 11275 transitions. [2022-09-16 11:10:45,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 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 11:10:45,075 INFO L276 IsEmpty]: Start isEmpty. Operand 4072 states and 11275 transitions. [2022-09-16 11:10:45,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-09-16 11:10:45,075 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:45,076 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] [2022-09-16 11:10:45,093 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 11:10:45,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:45,292 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:45,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:45,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1231918234, now seen corresponding path program 1 times [2022-09-16 11:10:45,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:45,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840467342] [2022-09-16 11:10:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:45,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:45,347 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 11:10:45,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:45,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840467342] [2022-09-16 11:10:45,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840467342] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:45,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232319922] [2022-09-16 11:10:45,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:45,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:45,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:45,348 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 11:10:45,349 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 11:10:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:45,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:45,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:45,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:45,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:45,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232319922] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:45,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:45,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-09-16 11:10:45,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935656579] [2022-09-16 11:10:45,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:45,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:10:45,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:45,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:10:45,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:10:45,484 INFO L87 Difference]: Start difference. First operand 4072 states and 11275 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 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 11:10:45,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:45,563 INFO L93 Difference]: Finished difference Result 5131 states and 14174 transitions. [2022-09-16 11:10:45,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:10:45,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 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 43 [2022-09-16 11:10:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:45,576 INFO L225 Difference]: With dead ends: 5131 [2022-09-16 11:10:45,577 INFO L226 Difference]: Without dead ends: 5101 [2022-09-16 11:10:45,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-09-16 11:10:45,577 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 114 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:45,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 273 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:45,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2022-09-16 11:10:45,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 3509. [2022-09-16 11:10:45,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 3501 states have (on average 2.7680662667809197) internal successors, (9691), 3508 states have internal predecessors, (9691), 0 states have call successors, (0), 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 11:10:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 9691 transitions. [2022-09-16 11:10:45,647 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 9691 transitions. Word has length 43 [2022-09-16 11:10:45,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:45,647 INFO L495 AbstractCegarLoop]: Abstraction has 3509 states and 9691 transitions. [2022-09-16 11:10:45,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 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 11:10:45,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 9691 transitions. [2022-09-16 11:10:45,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-09-16 11:10:45,648 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:45,649 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:45,683 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 11:10:45,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:45,887 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:45,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:45,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1610864974, now seen corresponding path program 1 times [2022-09-16 11:10:45,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:45,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544285989] [2022-09-16 11:10:45,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:45,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:45,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:45,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544285989] [2022-09-16 11:10:45,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544285989] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:45,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763525453] [2022-09-16 11:10:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:45,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:45,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:45,953 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 11:10:45,954 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 11:10:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:45,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:10:45,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:46,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:46,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:46,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763525453] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:46,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-16 11:10:46,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 15 [2022-09-16 11:10:46,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372896114] [2022-09-16 11:10:46,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:46,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:46,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:10:46,246 INFO L87 Difference]: Start difference. First operand 3509 states and 9691 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 11:10:46,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:46,281 INFO L93 Difference]: Finished difference Result 3142 states and 8650 transitions. [2022-09-16 11:10:46,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:10:46,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-09-16 11:10:46,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:46,309 INFO L225 Difference]: With dead ends: 3142 [2022-09-16 11:10:46,310 INFO L226 Difference]: Without dead ends: 3019 [2022-09-16 11:10:46,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:10:46,312 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 103 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:46,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 167 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:46,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3019 states. [2022-09-16 11:10:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3019 to 2769. [2022-09-16 11:10:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2769 states, 2764 states have (on average 2.698986975397974) internal successors, (7460), 2768 states have internal predecessors, (7460), 0 states have call successors, (0), 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 11:10:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 7460 transitions. [2022-09-16 11:10:46,424 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 7460 transitions. Word has length 50 [2022-09-16 11:10:46,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:46,437 INFO L495 AbstractCegarLoop]: Abstraction has 2769 states and 7460 transitions. [2022-09-16 11:10:46,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 11:10:46,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 7460 transitions. [2022-09-16 11:10:46,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-09-16 11:10:46,440 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:46,440 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 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] [2022-09-16 11:10:46,460 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 11:10:46,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:46,641 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:46,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:46,642 INFO L85 PathProgramCache]: Analyzing trace with hash 818871842, now seen corresponding path program 2 times [2022-09-16 11:10:46,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:46,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642882860] [2022-09-16 11:10:46,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:46,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:46,727 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:46,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:46,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642882860] [2022-09-16 11:10:46,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642882860] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:46,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427436314] [2022-09-16 11:10:46,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:10:46,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:46,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:46,729 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 11:10:46,730 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 11:10:46,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:10:46,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:46,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:10:46,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:46,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:46,889 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:46,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427436314] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:46,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:46,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-09-16 11:10:46,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740731267] [2022-09-16 11:10:46,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:46,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:10:46,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:46,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:10:46,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-09-16 11:10:46,891 INFO L87 Difference]: Start difference. First operand 2769 states and 7460 transitions. Second operand has 13 states, 12 states have (on average 11.166666666666666) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 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 11:10:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:47,012 INFO L93 Difference]: Finished difference Result 7053 states and 18967 transitions. [2022-09-16 11:10:47,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:10:47,012 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 11.166666666666666) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 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 60 [2022-09-16 11:10:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:47,036 INFO L225 Difference]: With dead ends: 7053 [2022-09-16 11:10:47,036 INFO L226 Difference]: Without dead ends: 6555 [2022-09-16 11:10:47,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-09-16 11:10:47,037 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 467 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:47,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 406 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:47,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6555 states. [2022-09-16 11:10:47,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6555 to 4011. [2022-09-16 11:10:47,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4011 states, 4006 states have (on average 2.7086869695456817) internal successors, (10851), 4010 states have internal predecessors, (10851), 0 states have call successors, (0), 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 11:10:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4011 states to 4011 states and 10851 transitions. [2022-09-16 11:10:47,232 INFO L78 Accepts]: Start accepts. Automaton has 4011 states and 10851 transitions. Word has length 60 [2022-09-16 11:10:47,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:47,232 INFO L495 AbstractCegarLoop]: Abstraction has 4011 states and 10851 transitions. [2022-09-16 11:10:47,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 11.166666666666666) internal successors, (134), 13 states have internal predecessors, (134), 0 states have call successors, (0), 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 11:10:47,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4011 states and 10851 transitions. [2022-09-16 11:10:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-09-16 11:10:47,235 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:47,235 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:47,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:47,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:47,436 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:47,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:47,436 INFO L85 PathProgramCache]: Analyzing trace with hash 956835237, now seen corresponding path program 2 times [2022-09-16 11:10:47,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:47,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850370013] [2022-09-16 11:10:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:47,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:47,520 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:47,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:47,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850370013] [2022-09-16 11:10:47,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850370013] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:47,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167016410] [2022-09-16 11:10:47,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:10:47,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:47,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:47,522 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:47,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:10:47,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:10:47,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:47,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:47,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:47,623 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 11:10:47,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-09-16 11:10:47,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167016410] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:47,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:47,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-09-16 11:10:47,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390228236] [2022-09-16 11:10:47,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:47,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:10:47,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:47,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:10:47,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:10:47,694 INFO L87 Difference]: Start difference. First operand 4011 states and 10851 transitions. Second operand has 16 states, 15 states have (on average 5.8) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:47,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:47,975 INFO L93 Difference]: Finished difference Result 5179 states and 13836 transitions. [2022-09-16 11:10:47,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:10:47,976 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.8) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-09-16 11:10:47,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:47,987 INFO L225 Difference]: With dead ends: 5179 [2022-09-16 11:10:47,987 INFO L226 Difference]: Without dead ends: 5179 [2022-09-16 11:10:47,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=333, Invalid=857, Unknown=0, NotChecked=0, Total=1190 [2022-09-16 11:10:47,988 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 661 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:47,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 491 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:47,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5179 states. [2022-09-16 11:10:48,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5179 to 2459. [2022-09-16 11:10:48,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2456 states have (on average 2.5879478827361564) internal successors, (6356), 2458 states have internal predecessors, (6356), 0 states have call successors, (0), 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 11:10:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 6356 transitions. [2022-09-16 11:10:48,033 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 6356 transitions. Word has length 62 [2022-09-16 11:10:48,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:48,033 INFO L495 AbstractCegarLoop]: Abstraction has 2459 states and 6356 transitions. [2022-09-16 11:10:48,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.8) internal successors, (87), 16 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:48,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 6356 transitions. [2022-09-16 11:10:48,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-09-16 11:10:48,037 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:48,037 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 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 11:10:48,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:48,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-09-16 11:10:48,255 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:48,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:48,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1137013246, now seen corresponding path program 3 times [2022-09-16 11:10:48,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:48,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974881146] [2022-09-16 11:10:48,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:48,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:48,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:48,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974881146] [2022-09-16 11:10:48,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974881146] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:48,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527130031] [2022-09-16 11:10:48,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:10:48,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:48,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:48,334 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:48,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:10:48,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-09-16 11:10:48,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:48,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 13 conjunts are in the unsatisfiable core [2022-09-16 11:10:48,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:48,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:48,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527130031] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:48,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:48,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-09-16 11:10:48,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664994755] [2022-09-16 11:10:48,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:48,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-09-16 11:10:48,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:48,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-09-16 11:10:48,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-09-16 11:10:48,684 INFO L87 Difference]: Start difference. First operand 2459 states and 6356 transitions. Second operand has 25 states, 24 states have (on average 9.083333333333334) internal successors, (218), 25 states have internal predecessors, (218), 0 states have call successors, (0), 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 11:10:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:48,869 INFO L93 Difference]: Finished difference Result 10975 states and 29109 transitions. [2022-09-16 11:10:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-09-16 11:10:48,870 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 9.083333333333334) internal successors, (218), 25 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-09-16 11:10:48,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:48,926 INFO L225 Difference]: With dead ends: 10975 [2022-09-16 11:10:48,926 INFO L226 Difference]: Without dead ends: 9919 [2022-09-16 11:10:48,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-09-16 11:10:48,927 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 1315 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:48,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 780 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9919 states. [2022-09-16 11:10:49,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9919 to 4979. [2022-09-16 11:10:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4979 states, 4976 states have (on average 2.5940514469453375) internal successors, (12908), 4978 states have internal predecessors, (12908), 0 states have call successors, (0), 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 11:10:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4979 states to 4979 states and 12908 transitions. [2022-09-16 11:10:49,021 INFO L78 Accepts]: Start accepts. Automaton has 4979 states and 12908 transitions. Word has length 102 [2022-09-16 11:10:49,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:49,021 INFO L495 AbstractCegarLoop]: Abstraction has 4979 states and 12908 transitions. [2022-09-16 11:10:49,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 9.083333333333334) internal successors, (218), 25 states have internal predecessors, (218), 0 states have call successors, (0), 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 11:10:49,021 INFO L276 IsEmpty]: Start isEmpty. Operand 4979 states and 12908 transitions. [2022-09-16 11:10:49,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-09-16 11:10:49,034 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:49,034 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 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 11:10:49,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:49,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:49,252 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:49,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:49,252 INFO L85 PathProgramCache]: Analyzing trace with hash -939907646, now seen corresponding path program 4 times [2022-09-16 11:10:49,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:49,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342059976] [2022-09-16 11:10:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:49,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:49,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:49,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:49,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342059976] [2022-09-16 11:10:49,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342059976] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:49,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348512505] [2022-09-16 11:10:49,532 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:10:49,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:49,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:49,533 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:49,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:10:49,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:10:49,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:49,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 25 conjunts are in the unsatisfiable core [2022-09-16 11:10:49,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:49,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:50,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348512505] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:50,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:50,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-09-16 11:10:50,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072014287] [2022-09-16 11:10:50,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:50,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-09-16 11:10:50,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:50,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-09-16 11:10:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-09-16 11:10:50,448 INFO L87 Difference]: Start difference. First operand 4979 states and 12908 transitions. Second operand has 49 states, 48 states have (on average 8.041666666666666) internal successors, (386), 49 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:10:51,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:51,250 INFO L93 Difference]: Finished difference Result 32251 states and 86565 transitions. [2022-09-16 11:10:51,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:10:51,250 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 8.041666666666666) internal successors, (386), 49 states have internal predecessors, (386), 0 states have call successors, (0), 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 186 [2022-09-16 11:10:51,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:51,333 INFO L225 Difference]: With dead ends: 32251 [2022-09-16 11:10:51,334 INFO L226 Difference]: Without dead ends: 30079 [2022-09-16 11:10:51,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-09-16 11:10:51,335 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 3013 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3013 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:51,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3013 Valid, 1495 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:10:51,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30079 states. [2022-09-16 11:10:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30079 to 10019. [2022-09-16 11:10:51,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10019 states, 10016 states have (on average 2.5970447284345046) internal successors, (26012), 10018 states have internal predecessors, (26012), 0 states have call successors, (0), 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 11:10:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10019 states to 10019 states and 26012 transitions. [2022-09-16 11:10:51,658 INFO L78 Accepts]: Start accepts. Automaton has 10019 states and 26012 transitions. Word has length 186 [2022-09-16 11:10:51,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:51,658 INFO L495 AbstractCegarLoop]: Abstraction has 10019 states and 26012 transitions. [2022-09-16 11:10:51,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 8.041666666666666) internal successors, (386), 49 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:10:51,659 INFO L276 IsEmpty]: Start isEmpty. Operand 10019 states and 26012 transitions. [2022-09-16 11:10:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2022-09-16 11:10:51,678 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:51,678 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 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 11:10:51,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:51,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-16 11:10:51,896 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:10:51,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:51,896 INFO L85 PathProgramCache]: Analyzing trace with hash -383568574, now seen corresponding path program 5 times [2022-09-16 11:10:51,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:51,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034341445] [2022-09-16 11:10:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:51,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:52,704 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:52,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:52,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034341445] [2022-09-16 11:10:52,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034341445] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:52,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879316417] [2022-09-16 11:10:52,704 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-16 11:10:52,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:52,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:52,705 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:52,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:10:52,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2022-09-16 11:10:52,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:52,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 49 conjunts are in the unsatisfiable core [2022-09-16 11:10:52,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:53,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:55,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879316417] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:55,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:55,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 96 [2022-09-16 11:10:55,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054855084] [2022-09-16 11:10:55,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:55,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-09-16 11:10:55,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:55,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-09-16 11:10:55,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-09-16 11:10:55,477 INFO L87 Difference]: Start difference. First operand 10019 states and 26012 transitions. Second operand has 97 states, 96 states have (on average 7.520833333333333) internal successors, (722), 97 states have internal predecessors, (722), 0 states have call successors, (0), 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 11:11:00,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:00,668 INFO L93 Difference]: Finished difference Result 105043 states and 284637 transitions. [2022-09-16 11:11:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-09-16 11:11:00,669 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 7.520833333333333) internal successors, (722), 97 states have internal predecessors, (722), 0 states have call successors, (0), 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 354 [2022-09-16 11:11:00,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:01,080 INFO L225 Difference]: With dead ends: 105043 [2022-09-16 11:11:01,081 INFO L226 Difference]: Without dead ends: 100639 [2022-09-16 11:11:01,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 659 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-09-16 11:11:01,083 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 5323 mSDsluCounter, 3410 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5323 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:01,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5323 Valid, 3367 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-09-16 11:11:01,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100639 states. [2022-09-16 11:11:01,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100639 to 20099. [2022-09-16 11:11:01,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20099 states, 20096 states have (on average 2.598527070063694) internal successors, (52220), 20098 states have internal predecessors, (52220), 0 states have call successors, (0), 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 11:11:02,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20099 states to 20099 states and 52220 transitions. [2022-09-16 11:11:02,042 INFO L78 Accepts]: Start accepts. Automaton has 20099 states and 52220 transitions. Word has length 354 [2022-09-16 11:11:02,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:02,042 INFO L495 AbstractCegarLoop]: Abstraction has 20099 states and 52220 transitions. [2022-09-16 11:11:02,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 7.520833333333333) internal successors, (722), 97 states have internal predecessors, (722), 0 states have call successors, (0), 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 11:11:02,043 INFO L276 IsEmpty]: Start isEmpty. Operand 20099 states and 52220 transitions. [2022-09-16 11:11:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2022-09-16 11:11:02,085 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:02,086 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 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 11:11:02,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-09-16 11:11:02,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-09-16 11:11:02,304 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:11:02,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:02,304 INFO L85 PathProgramCache]: Analyzing trace with hash 375182402, now seen corresponding path program 6 times [2022-09-16 11:11:02,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:02,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973565264] [2022-09-16 11:11:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:02,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:02,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:04,943 INFO L134 CoverageAnalysis]: Checked inductivity of 30785 backedges. 0 proven. 30785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:04,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:04,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973565264] [2022-09-16 11:11:04,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973565264] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:04,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413237673] [2022-09-16 11:11:04,944 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-16 11:11:04,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:04,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:04,945 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:04,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 11:11:05,296 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2022-09-16 11:11:05,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:05,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1213 conjuncts, 97 conjunts are in the unsatisfiable core [2022-09-16 11:11:05,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:06,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30785 backedges. 0 proven. 30785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:06,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 30785 backedges. 0 proven. 30785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:13,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413237673] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:13,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:13,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 192 [2022-09-16 11:11:13,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017012669] [2022-09-16 11:11:13,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:13,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2022-09-16 11:11:13,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:13,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2022-09-16 11:11:13,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-09-16 11:11:13,986 INFO L87 Difference]: Start difference. First operand 20099 states and 52220 transitions. Second operand has 193 states, 192 states have (on average 7.260416666666667) internal successors, (1394), 193 states have internal predecessors, (1394), 0 states have call successors, (0), 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 11:12:07,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:07,962 INFO L93 Difference]: Finished difference Result 371587 states and 1013421 transitions. [2022-09-16 11:12:07,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-09-16 11:12:07,962 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 192 states have (on average 7.260416666666667) internal successors, (1394), 193 states have internal predecessors, (1394), 0 states have call successors, (0), 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 690 [2022-09-16 11:12:07,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:09,746 INFO L225 Difference]: With dead ends: 371587 [2022-09-16 11:12:09,746 INFO L226 Difference]: Without dead ends: 362719 [2022-09-16 11:12:09,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1474 GetRequests, 1283 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-09-16 11:12:09,749 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 14777 mSDsluCounter, 7521 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 1010 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14777 SdHoareTripleChecker+Valid, 7253 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1010 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:09,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14777 Valid, 7253 Invalid, 2303 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1010 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-09-16 11:12:10,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362719 states. [2022-09-16 11:12:13,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362719 to 40259. [2022-09-16 11:12:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40259 states, 40256 states have (on average 2.599264705882353) internal successors, (104636), 40258 states have internal predecessors, (104636), 0 states have call successors, (0), 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 11:12:13,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40259 states to 40259 states and 104636 transitions. [2022-09-16 11:12:13,412 INFO L78 Accepts]: Start accepts. Automaton has 40259 states and 104636 transitions. Word has length 690 [2022-09-16 11:12:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:13,413 INFO L495 AbstractCegarLoop]: Abstraction has 40259 states and 104636 transitions. [2022-09-16 11:12:13,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 192 states have (on average 7.260416666666667) internal successors, (1394), 193 states have internal predecessors, (1394), 0 states have call successors, (0), 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 11:12:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 40259 states and 104636 transitions. [2022-09-16 11:12:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1363 [2022-09-16 11:12:13,511 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:13,511 INFO L195 NwaCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 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 11:12:13,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:13,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:12:13,730 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-09-16 11:12:13,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:13,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2121142850, now seen corresponding path program 7 times [2022-09-16 11:12:13,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:13,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710239011] [2022-09-16 11:12:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:13,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 126065 backedges. 0 proven. 126065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:25,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:25,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710239011] [2022-09-16 11:12:25,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710239011] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:25,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265407315] [2022-09-16 11:12:25,643 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-09-16 11:12:25,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:25,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:25,644 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:25,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-16 11:12:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:26,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 193 conjunts are in the unsatisfiable core [2022-09-16 11:12:26,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 126065 backedges. 0 proven. 126065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:27,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 126065 backedges. 0 proven. 126065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:56,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265407315] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:56,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:56,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 384 [2022-09-16 11:12:56,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469971540] [2022-09-16 11:12:56,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:56,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2022-09-16 11:12:56,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:56,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2022-09-16 11:12:56,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2022-09-16 11:12:56,573 INFO L87 Difference]: Start difference. First operand 40259 states and 104636 transitions. Second operand has 385 states, 384 states have (on average 7.130208333333333) internal successors, (2738), 385 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)